System of Measurement
Thread Size
1/4"-20
1/4"-20, 5/16"-18, 3/8"-16, 1/2"-13, 5/8"-11, 3/4"-10
1/4"-28
1/4"-32
5/16"-18
5/16"-24
5/16"-32
3/8"-16
3/8"-24
3/8"-32
7/16"-14
7/16"-20
7/16"-28
1/2"-13
1/2"-20
1/2"-28
9/16"-12
9/16"-18
5/8"-11
5/8"-18
5/8"-24
11/16"-24
11/16"-27
3/4"-10
3/4"-16
3/4"-20
7/8"-14
7/8"-20
7/8"-9
1"-12
1"-14
1"-8
1 1/8"-12
1 1/8"-7
1 1/8"-8
1 1/4"-12
1 1/4"-7
1 1/4"-8
1 3/8"-12
1 3/8"-6
1 3/8"-8
1 1/2"-12
1 1/2"-6
1 1/2"-8
1 5/8"-12
1 5/8"-5 1/2
1 5/8"-8
1 3/4"-12
1 3/4"-5
1 3/4"-8
1 7/8"-12
1 7/8"-5
1 7/8"-8
2"-12
2"-4 1/2
2"-8
2 1/4"-12
2 1/4"-4 1/2
2 1/4"-8
2 1/2"-12
2 1/2"-4
2 3/4"-4
3"-12
3"-4
3 1/2"-4
0-80
00-90
00-96
000-120
0000-160
1-64
1-72
10-24
10-32
12-24
12-28
2-56
2-56, 4-40, 6-32, 8-32, 10-24, 10-32, 1/4"-20
2-64
3-48
3-56
4-36
4-40
4-48
5-40
5-44
6-32
6-40
8-32
8-36
M1
M1.2
M1.4
M1.6
M1.7
M1.8
M10
M12
M14
M16
M18
M2
M2, M3, M4, M5, M6, M8, M10, M12
M2.3
M2.5
M2.6
M20
M22
M24
M27
M3
M3, M4, M5, M6, M8, M10, M12, M16, M20
M3.5
M30
M33
M36
M39
M4
M42
M45
M48
M5
M52
M56
M6
M60
M64
M7
M72
M8
Material
316 Stainless Steel
400 Nickel
410 Stainless Steel
6061 Aluminum
17-4 PH Stainless Steel
18-8 Stainless Steel
A286 Stainless Steel
Acetal Plastic
Alloy 20 Stainless Steel
Black Corrosion-Resistant-Coated 6061 Aluminum
Black Corrosion-Resistant-Coated Steel
Black Oxide Steel
Black-Oxide 18-8 Stainless Steel
Black-Oxide 316 Stainless Steel
Black-Oxide Steel
Blue PTFE-Coated Steel
Blue-Dyed Steel
Brass
Bumax 88 Stainless Steel
C276 Nickel
Cadmium Yellow-Chromate Plated Steel
Ceramic
Fiberglass
Galvanized Steel
Glass-Filled Nylon Plastic
Grade 2 Titanium
Hot-Dipped Galvanized Steel
Nickel-Plated Brass
Nylon 6/6 Plastic
PEEK Plastic
PTFE Plastic
PTFE-Coated 18-8 Stainless Steel
PVC Plastic
PVDF Plastic
Polycarbonate Plastic
Polypropylene Plastic
Silicon Bronze
Steel
Zinc Plated Steel
Zinc Yellow-Chromate Plated Steel
Zinc Yellow-Chromate-Plated Steel
Zinc-Flake-Coated Steel
Zinc-Plated Steel
Width
Width
1/16"
5/64"
3/32"
7/64"
1/8"
5/32"
3/16"
1/4"
17/64"
5/16 "
5/16"
11/32"
3/8 "
3/8"
27/64"
7/16 "
7/16"
15/32"
1/2"
33/64"
17/32"
9/16"
19/32"
5/8"
11/16"
45/64"
3/4"
49/64"
25/32"
0.863"
7/8"
29/32"
59/64"
15/16"
61/64"
1"
1 1/32"
1.047"
1 1/16"
1 7/64"
1 1/8"
1.231"
1 1/4"
1 19/64"
1 5/16"
1.416"
1 7/16"
1 15/32"
1 31/64"
1 1/2"
1.6"
1 5/8"
1 11/16"
1 3/4"
1.784"
1 13/16"
1 7/8"
1 15/16"
1.969"
2"
2 1/16"
2 3/16"
2 1/4"
2 3/8"
2 7/16"
2 9/16"
2 5/8"
2 3/4"
2 13/16"
2 15/16"
3"
3 1/8"
3 3/8"
3 1/2"
3 3/4"
3 7/8"
4 1/8"
4 1/2"
5 3/8"
2.5 mm
3 mm
3.2 mm
3.5 mm
3.9 mm
4 mm
4.5 mm
4.8 mm
4.9 mm
5 mm
5.32 mm
5.4 mm
5.5 mm
6 mm
6.78 mm
6.8 mm
6.9 mm
7 mm
7.5 mm
7.78 mm
7.8 mm
7.9 mm
8 mm
9.78 mm
9.9 mm
10 mm
10.3 mm
11 mm
12 mm
12.73 mm
12.85 mm
12.9 mm
13 mm
14 mm
14.8 mm
15.85 mm
16 mm
17 mm
17.74 mm
17.9 mm
18 mm
18.8 mm
19 mm
21 mm
22 mm
24 mm
27 mm
30 mm
32 mm
33 mm
36 mm
41 mm
46 mm
49 mm
50 mm
55 mm
60 mm
65 mm
70 mm
75 mm
80 mm
85 mm
90 mm
100 mm
105 mm
Height
Height
1/32"
3/64"
1/16"
5/64"
3/32"
7/64"
1/8 "
1/8"
9/64"
5/32"
11/64"
3/16"
13/64"
7/32 "
7/32"
15/64"
1/4"
17/64"
9/32"
19/64"
5/16"
21/64"
11/32"
23/64"
3/8"
25/64"
13/32"
27/64"
7/16"
0.484"
31/64"
1/2"
33/64"
17/32"
35/64"
9/16"
0.609"
39/64"
41/64"
21/32"
11/16"
23/32"
0.734"
47/64"
3/4"
49/64"
25/32"
27/32"
0.859"
55/64"
7/8"
29/32"
31/32"
0.984"
63/64"
1"
1 1/32"
1 1/16"
1 3/32"
1.109"
1 7/64"
1 9/64"
1 5/32"
1 11/64"
1 3/16"
1 7/32"
1.219"
1 1/4"
1 9/32"
1 5/16"
1 11/32"
1 25/64"
1 13/32"
1 29/64"
1 15/32"
1 1/2"
1 19/32"
1 39/64"
1 5/8"
1 21/32"
1 23/32"
1 3/4"
1 27/32"
1 15/16"
1 31/32"
2"
2 1/64"
2 5/32"
2 13/64"
2 3/8"
2 29/64"
2 19/32"
3 1/2"
0.8 mm
1 mm
1.2 mm
1.3 mm
1.4 mm
1.6 mm
1.7 mm
1.8 mm
2 mm
2.2 mm
2.4 mm
2.5 mm
2.7 mm
2.8 mm
2.9 mm
3 mm
3.2 mm
3.5 mm
4 mm
4.3 mm
4.4 mm
4.9 mm
5 mm
5.2 mm
5.4 mm
5.5 mm
6 mm
6.3 mm
6.4 mm
6.5 mm
6.8 mm
7 mm
8 mm
8.4 mm
9 mm
9.8 mm
10 mm
10.3 mm
10.54 mm
10.8 mm
11 mm
12 mm
13 mm
13.5 mm
14 mm
14.3 mm
14.8 mm
15 mm
16 mm
16.5 mm
17 mm
18 mm
19 mm
19.5 mm
20 mm
20.7 mm
21 mm
22 mm
22.5 mm
22.7 mm
23 mm
24 mm
24.7 mm
26 mm
27 mm
27.4 mm
28 mm
29 mm
30 mm
31 mm
33 mm
34 mm
36 mm
38 mm
39 mm
42 mm
45 mm
48 mm
52 mm
56 mm
58 mm
64 mm
Specifications Met
ANSI/ASME 18.2.2
ASME B1.1, ASME B18.2.2, SAE J995
ASME B18.2.2
ASME B18.2.2, ASTM A194
ASME B18.2.2, SAE J995
ASME B18.6.3
ASTM A108
ASTM A108, DIN 439B, ISO 4035
ASTM A194
ASTM A194, DIN 6915
ASTM A563
ASTM F594
DIN 439, ISO 4035
DIN 439B
DIN 439B, ISO 4035
DIN 439B; ISO 4035
DIN 6915
DIN 6915, ISO 4775
DIN 6915, ISO 7414
DIN 934
DIN 934L
DIN 936
FDA Compliant 21 CFR 177.2510, NSF/ANSI 61, UL 94 V-0
Fed. Spec. FF-N-836, MS35649-204, Fed. Spec. QQ-P-35
Fed. Spec. FF-N-836, MS35649-224, Fed. Spec. QQ-P-35
Fed. Spec. FF-N-836, MS35649-2254, Fed. Spec. QQ-P-35
Fed. Spec. FF-N-836, MS35649-2314, Fed. Spec. QQ-P-35
Fed. Spec. FF-N-836, MS35649-2384, Fed. Spec. QQ-P-35
Fed. Spec. FF-N-836, MS35649-244, Fed. Spec. QQ-P-35
Fed. Spec. FF-N-836, MS35649-264, Fed. Spec. QQ-P-35
Fed. Spec. FF-N-836, MS35649-284, Fed. Spec. QQ-P-35
Fed. Spec. FF-N-836, MS35650-304, Fed. Spec. QQ-P-35
Fed. Spec. FF-N-836, MS35650-314, Fed. Spec. QQ-P-35
Fed. Spec. FF-N-836, MS35650-3254, Fed. Spec. QQ-P-35
Fed. Spec. FF-N-836, MS35650-3314, Fed. Spec. QQ-P-35
Fed. Spec. FF-N-836, MS35650-3384, Fed. Spec. QQ-P-35
Fed. Spec. FF-N-836, MS35691-11
Fed. Spec. FF-N-836, MS35691-15
Fed. Spec. FF-N-836, MS35691-19
Fed. Spec. FF-N-836, MS35691-23
Fed. Spec. FF-N-836, MS35691-27
Fed. Spec. FF-N-836, MS35691-3
Fed. Spec. FF-N-836, MS35691-31
Fed. Spec. FF-N-836, MS35691-35
Fed. Spec. FF-N-836, MS35691-39
Fed. Spec. FF-N-836, MS35691-51
Fed. Spec. FF-N-836, MS35691-55
Fed. Spec. FF-N-836, MS35691-7
Fed. Spec. FF-N-836, MS51967-12
Fed. Spec. FF-N-836, MS51967-15
Fed. Spec. FF-N-836, MS51967-21
Fed. Spec. FF-N-836, MS51967-24
Fed. Spec. FF-N-836, MS51967-3
Fed. Spec. FF-N-836, MS51967-6
Fed. Spec. FF-N-836, MS51967-9
Fed. Spec. FF-N-836, MS51968-12
Fed. Spec. FF-N-836, MS51968-15
Fed. Spec. FF-N-836, MS51968-18
Fed. Spec. FF-N-836, MS51968-21
Fed. Spec. FF-N-836, MS51968-24
Fed. Spec. FF-N-836, MS51968-3
Fed. Spec. FF-N-836, MS51968-6
Fed. Spec. FF-N-836, MS51968-9
Fed. Spec. FF-N-836, MS51971-1, Fed. Spec. QQ-P-35
Fed. Spec. FF-N-836, MS51971-2, Fed. Spec. QQ-P-35
Fed. Spec. FF-N-836, MS51971-3, Fed. Spec. QQ-P-35
Fed. Spec. FF-N-836, MS51971-5, Fed. Spec. QQ-P-35
Fed. Spec. FF-N-836, MS51971-7, Fed. Spec. QQ-P-35
Fed. Spec. FF-N-836, MS51971-8, Fed. Spec. QQ-P-35
Fed. Spec. FF-N-836, MS51972-1, Fed. Spec. QQ-P-35
Fed. Spec. FF-N-836, MS51972-2, Fed. Spec. QQ-P-35
Fed. Spec. FF-N-836, MS51972-3, Fed. Spec. QQ-P-35
Fed. Spec. FF-N-836, MS51972-5, Fed. Spec. QQ-P-35
Fed. Spec. FF-N-836, NAS671C0
Fed. Spec. FF-N-836, NAS671C10
Fed. Spec. FF-N-836, NAS671C2
Fed. Spec. FF-N-836, NAS671C4
Fed. Spec. FF-N-836, NAS671C6
Fed. Spec. FF-N-836, NAS671C8
ISO 4032
ISO 4035, DIN 439B
JIS B 1181
MIL-DTL-1222
MS35649-202, Fed. Spec. FF-N-836
MS35649-222, Fed. Spec. FF-N-836
MS35649-2252, Fed. Spec. FF-N-836
MS35649-2312, Fed. Spec. FF-N-836
MS35649-2382, Fed. Spec. FF-N-836
MS35649-242, Fed. Spec. FF-N-836
MS35649-262, Fed. Spec. FF-N-836
MS35649-282, Fed. Spec. FF-N-836
MS35650-302, Fed. Spec. FF-N-836
MS51967-11; Fed. Spec. FF-N-836
MS51967-14; Fed. Spec. FF-N-836
MS51967-17; Fed. Spec. FF-N-836
MS51967-20; Fed. Spec. FF-N-836
MS51967-23; Fed. Spec. FF-N-836
MS51967-2; Fed. Spec. FF-N-836
MS51967-5; Fed. Spec. FF-N-836
MS51967-8; Fed. Spec. FF-N-836
MS51968-11; Fed. Spec. FF-N-836
MS51968-14; Fed. Spec. FF-N-836
MS51968-20; Fed. Spec. FF-N-836
MS51968-23; Fed. Spec. FF-N-836
MS51968-2; Fed. Spec. FF-N-836
MS51968-5; Fed. Spec. FF-N-836
MS51968-8; Fed. Spec. FF-N-836
SAE J995
UL 508A, UL Recognized Component
Drive Style
Product Categories Nuts / Hex Nuts

Hex Nuts

3132 Products

Medium-Strength Steel Hex Nuts

Medium-Strength Steel Hex Nuts—Grade 5
These nuts are suitable for fastening most machinery and equipment.
Metric Medium-Strength Steel Hex Nuts—Class 8
Class 8 nuts are comparable in strength to Class 8.8 bolts and are suitable for fastening most machinery and equipment.
Metric Fine-Thread Medium-StrengthSteel Hex Nuts—Class 8
Metric Left-Hand ThreadedMedium-Strength Steel Hex Nuts
These metric nuts tighten when turned to the left; once fastened, they resist loosening from counterclockwise motion.
Left-Hand Threaded Medium-StrengthSteel Hex Nuts—Grade 5
These nuts tighten when turned to the left; once fastened, they resist loosening from counterclockwise motion.
Mil. Spec. Medium-Strength Steel Hex Nuts
Choose these nuts for their adherence to strict military standards for material and construction.
JIS Medium-Strength Steel Hex Nuts
These metric nuts meet JIS (Japanese Industrial Standard) B 1181.

High-Strength Steel Hex Nuts

High-Strength Steel Hex Nuts—Grade 8
These nuts are about 25% stronger than medium-strength steel nuts.
Metric High-Strength Steel Hex Nuts—Class 10
About 25% stronger than medium-strength steel nuts, these nuts are comparable in strength to class 10.9 bolts.
Metric Fine-Thread High-StrengthSteel Hex Nuts—Class 10
Closely spaced metric threads prevent these nuts from loosening due to vibration. About 25% stronger than medium-strength steel nuts, these nuts are comparable in strength to Class 10.9 bolts.
Mil. Spec. High-Strength Steel Hex Nuts
Choose these nuts for their adherence to strict military standards for material and construction.
Left-Hand Threaded High-Strength Steel Hex Nuts
Tighten these nuts by turning them to the left; once fastened, they resist loosening from counterclockwise motion.
High-Strength Steel Hex Nuts with Material Test Report
These nuts come with a traceable lot number and a physical and chemical test report.

Low-Strength Steel Hex Nuts

Low-Strength Steel Hex Nuts
About half the strength of medium-strength steel nuts, these nuts are for light duty fastening applications.
Mil. Spec. Low-Strength Steel Hex Nuts
Choose these nuts for their adherence to strict military standards for material and construction.
Metric Low-Strength Steel Hex Nuts
About half the strength of medium-strength steel nuts, these metric nuts are for light duty fastening applications.
Metric Fine-Thread Low-Strength Steel Hex Nuts
Metric Left-Hand Threaded Low-Strength Steel Hex Nuts
Once tightened to the left, these metric nuts resist loosening from counterclockwise motion.
Left-Hand Threaded Low-Strength Steel Hex Nuts
These nuts tighten when turned to the left; once fastened, they resist loosening from counterclockwise motion.

Extreme-Strength Steel Hex Nuts

Extreme-Strength Steel Hex Nuts—Grade 9
These nuts are about 20% stronger than high strength steel nuts and are often used in heavy machinery.
Metric Extreme-Strength Steel Hex Nuts—Class 12
These metric nuts are about 20% stronger than high strength steel nuts and are often used in heavy machinery.

Stainless Steel Hex Nuts

18-8 Stainless Steel Hex Nuts
These nuts have good chemical resistance and may be mildly magnetic.
Metric 18-8 Stainless Steel Hex Nuts
These nuts have good chemical resistance and may be mildly magnetic. Metric 18-8 stainless steel is also known as A2 stainless steel.
Metric Fine-Thread 18-8 Stainless Steel Hex Nuts
Mil. Spec. 18-8 Stainless Steel Hex Nuts
Choose these nuts for their adherence to strict military standards for material and construction.
JIS 18-8 Stainless Steel Hex Nuts
These metric nuts meet JIS (Japanese industrial Standard) B 1181.
Metric Left-Hand Threaded 18-8 Stainless Steel Hex Nuts
Tighten these nuts by turning them to the left; once fastened, they resist loosening from counterclockwise motion.
Left-Hand Threaded 18-8 Stainless Steel Hex Nuts
These nuts tighten when turned to the left; once fastened, they resist loosening from counterclockwise motion.
Super-Corrosion-Resistant 316 Stainless Steel Hex Nuts
These nuts have excellent chemical resistance and can be used in saltwater environments.
Metric Super-Corrosion-Resistant316 Stainless Steel Hex Nuts
These metric nuts have good chemical resistance and may be mildly magnetic.
Left-Hand Threaded Super-Corrosion-Resistant316 Stainless Steel Hex Nuts
These nuts tighten when turned to the left; once fastened, they resist loosening from counterclockwise motion.
Ultra-Corrosion-Resistant Alloy 20 Stainless Steel Hex Nuts
The most corrosion resistant stainless steel nuts we offer, these nuts resist chemicals and acids in harsh environments.

High-Strength Stainless Steel Hex Nuts

Super-Corrosion-ResistantHigh-Strength Bumax 88 Hex Nuts
Comparable in strength to Grade 5 steel and as resistant to chemicals and salt water as 316 stainless steel.
High-Strength Super-Corrosion-Resistant 316Stainless Steel Hex Nuts for High-Pressure Applications
Hardened for added strength, these nuts are more corrosion resistant to chemicals and salt water than 18-8 stainless steel nuts.
High-Temperature High-StrengthA286 Stainless Steel Hex Nuts
Often used to fasten parts in engines and turbines, these nuts are comparable in strength to Grade 8 steel.
High-Strength 17-4 PH Stainless Steel Hex Nuts
Commonly used to fasten structural parts and pumps, these nuts are comparable in strength to Grade 8 steel.
Seize-Resistant High-Strength410 Stainless Steel Hex Nuts
These nuts resist sticking during installation and are comparable in strength to Grade 5 steel.

Metric 18-8 Stainless Steel Sealing Hex Nuts

Metric 18-8 Stainless Steel Sealing Hex Nuts
Made of stainless steel, these metric nuts have good chemical resistance and may be mildly magnetic. They have a silicone seal that prevents leaks and seals out contaminants.

Plastic Hex Nuts

Nylon Hex Nuts
Made from nylon 6/6, these nuts resist oil, grease, and solvents (except mineral acids).
Metric Nylon Hex Nuts
These metric nuts resist oil, grease, and solvents (except mineral acids).
High-Strength High-Temperature PEEK Hex Nuts
PEEK nuts are often used as an alternative to metal hex nuts. They withstand temperatures up to 550° F and resist acids, bases, and salt solutions.
High-Temperature Chemical-Resistant PTFE Hex Nuts
PTFE nuts withstand temperatures up to 500° F. They resist oil, grease, detergents, and most mineral acids. They're the lowest friction plastic nuts we offer, so they thread on smoothly.
Fiberglass Hex Nuts
Fiberglass nuts are stronger than nylon 6/6 nuts. They resist acids, solvents, salt water, and oil.
Impact-Resistant Polycarbonate Hex Nuts
Polycarbonate nuts stand up to oil, grease, and detergents.
Glass-Filled Nylon Hex Nuts
Glass-filled nylon nuts are stronger than nylon 6/6 nuts. They resist oil, grease, and solvents (except mineral acids).
Acid-Resistant PVC Hex Nuts
PVC nuts resist acids, alkalies, salt solutions, and alcohol.
Chemical-Resistant Polypropylene Hex Nuts
Polypropylene nuts resist organic solvents and degreasing agents.
High-Strength Chemical-Resistant PVDF Hex Nuts
Stronger than PTFE nuts and resistant to solvents, bases, and acids—including hydrochloric and nitric acid—these PVDF nuts are often used in chemical processing equipment.
Water-Resistant Acetal Hex Nuts
For use in wet environments, acetal nuts resist alcohol, gasoline, and solvents.

Brass Hex Nuts

Brass Hex Nuts
These nuts are corrosion resistant in wet environments, electrically conductive, and nonmagnetic.
Metric Brass Hex Nuts
These metric nuts are corrosion resistant in wet environments, electrically conductive, and nonmagnetic.
Metric Fine-Thread Brass Hex Nuts
These brass nuts resist rusting from water and have closely spaced threads to prevent loosening from vibration.

Aluminum Hex Nuts

Aluminum Hex Nuts
One-third the weight of steel, these aluminum nuts are corrosion resistant in wet environments and nonmagnetic.
Metric Aluminum Hex Nuts
One-third the weight of steel, these metric aluminum nuts are corrosion resistant in wet environments and nonmagnetic.

Bronze Hex Nuts

Bronze Hex Nuts
These nuts are resistant to salt water, electrically conductive, and nonmagnetic.
Metric Bronze Hex Nuts
These metric nuts are resistant to salt water, electrically conductive, and nonmagnetic.

Titanium Hex Nuts

Titanium Hex Nuts
These nuts have a high strength-to-weight ratio and resist acids and salt water.
Metric Titanium Hex Nuts
These metric nuts have a high strength-to-weight ratio and resist acids and salt water.

Nickel Alloy Hex Nuts

Nickel Alloy Hex Nuts
Commonly used in valves, pumps, and shafts, these 400 nickel nuts resist salt water and caustic chemicals.
Super-Corrosion-Resistant Nickel Alloy Hex Nuts
More corrosion resistant than 400 nickel nuts, these nuts are often used in marine environments and chemical-processing plants.

Ceramic Hex Nuts

Ceramic Hex Nuts
Ceramic nuts won't melt, seize, or become brittle—even at temperatures up to 3000° F.

Thin Hex Nuts

Left-Hand Threaded 18-8 Stainless Steel Thin Hex Nuts
These nuts tighten when turned to the left; once fastened, they resist loosening from counterclockwise motion.
Titanium Thin Hex Nuts
Titanium nuts have a high strength-to-weight ratio and are resistant to acids and salt water.
Bronze Thin Hex Nuts
Bronze nuts are stronger and more resistant to salt water than brass nuts.
Aluminum Thin Hex Nuts
One-third the weight of steel, aluminum nuts resist corrosion in wet environments.
Plastic Thin Hex Nuts
Plastic nuts are chemical resistant, nonconductive, and lightweight.
Left-Hand Threaded Brass Thin Hex Nuts
These nuts tighten to the left and won’t loosen from counterclockwise motion.
Metric Brass Thin Hex Nuts
Made from brass, these metric nuts are corrosion resistant in wet environments, electrically conductive, and nonmagnetic. About half the height of standard hex nuts, they are useful in low-clearance applications but have less tensile strength.
Brass Thin Hex Nuts
These nuts are corrosion resistant in wet environments, electrically conductive, and nonmagnetic.
Left-Hand Threaded Super-Corrosion-Resistant316 Stainless Steel Thin Hex Nuts
With threads that tighten to the left and made of 316 stainless steel, these nuts won’t loosen from counterclockwise motion in saltwater and corrosive environments. They’re half the height of standard hex nuts, so they fit where there’s low clearance.
Super-Corrosion-Resistant 316Stainless Steel Thin Hex Nuts
These nuts have excellent chemical resistance and can be used in saltwater environments.
Metric Super-Corrosion-Resistant316 Stainless Steel Thin Hex Nuts
These metric nuts are made of 316 stainless steel and half as tall as regular hex nuts—use them around chemicals and salt water when space is limited.
Mil. Spec. 18-8 Stainless Steel Thin Hex Nuts
Choose these nuts for their adherence to strict military standards for material and construction.
Medium-Strength Steel Thin Hex Nuts
Made from Grade 5 steel, these inch-sized nuts are suitable for most fastening applications.
Metric Fine-Thread 18-8 Stainless Steel Thin Hex Nuts
Made with fine-pitch threads, vibration is less likely to loosen these metric nuts than those with coarse-pitch threads since the threads sit closer together. Also called jam nuts, they are roughly half the height of standard hex nuts, so they’re good for applications with low clearance.
Metric 18-8 Stainless Steel Thin Hex Nuts
Useful in low-clearance applications, these metric nuts are roughly half the height of standard hex nuts, but aren’t as strong. All are 18-8 stainless steel, which is nearly as strong as steel but won’t rust in outdoor, washdown, and other corrosive environments.
18-8 Stainless Steel Thin Hex Nuts
These nuts have good chemical resistance and may be mildly magnetic.
High-Strength Steel Thin Hex Nuts—Grade 8
These nuts are about 25% stronger than medium-strength steel thin hex nuts. Available in inch thread sizes.
Left-Hand Threaded Low-Strength Steel Thin Hex Nuts
These nuts tighten when turned to the left; once fastened, they resist loosening from counterclockwise motion. Made of Grade 2 steel, these nuts can be used for fastening panels and other light duty fastening applications.
Low-Strength Steel Thin Hex Nuts
These nuts should be used for light duty fastening applications, such as securing access panels.
Metric Left-Hand ThreadedMedium-Strength Steel Thin Hex Nuts
Tighten these metric nuts to the left to make them resist loosening from counterclockwise motion. They’re made of Class 04 steel, so they’re suitable for fastening most machinery and equipment.
Left-Hand Threaded Medium-Strength Steel Thin Hex Nuts
These nuts tighten when turned to the left; once fastened, they resist loosening from counterclockwise motion. They’re Grade 5 steel, so you can used these inch-sized nuts for most fastening applications.
Metric Fine-Thread Medium-Strength Steel Thin Hex Nuts
These nuts are half the height of standard hex nuts, and have closely spaced threads to prevent loosening from vibration. Use them to fasten most machinery and equipment.
Metric Medium-Strength Steel Thin Hex Nuts
Half as thick as regular hex nuts, these nuts fit into spaces with low height clearances. They are about half as strong as medium-strength steel, and are often used for light duty applications, such as securing access panels.

Heavy Hex Nuts

Extreme-Strength Steel Heavy Hex Nuts—Grade 2H
Because they’re about 10% wider and taller than standard hex nuts, these heavy hex nuts distribute the load over a large area. Grade 2H nuts are comparable in strength to Grade 9 bolts.
Metric Extreme-Strength Steel Heavy Hex Nuts—Grade 2H
Comparable in strength to Class 12.9 bolts. About 10% wider and taller than standard hex nuts, these metric-sized heavy hex nuts distribute the load over a large area.
Medium-Strength Steel Heavy Hex Nuts—Grade 5
About 10% wider and taller than standard hex nuts, these heavy nuts distribute the load over a large area. Medium-strength steel nuts are suitable for fastening most machinery and equipment.
Left-Hand Threaded Medium-StrengthSteel Heavy Hex Nuts—Grade 5
These nuts tighten when turned to the left; once fastened, they resist loosening from counterclockwise motion. About 10% wider and taller than standard hex nuts, these heavy hex nuts distribute the load over a large area.
High-Strength Steel Heavy Hex Nuts
These Class 10 nuts are about 25% stronger than medium-strength steel heavy hex nuts.
Low-Strength Steel Heavy Hex Nuts
To distribute the load over a large area, these heavy hex nuts are about 10% wider and taller than standard hex nuts. They're about half the strength of medium-strength steel nuts and used for light duty fastening applications, such as securing access panels.
18-8 Stainless Steel Heavy Hex Nuts
These nuts have good chemical resistance. Considered heavy hex nuts, they are about 10% wider and taller than standard hex nuts and distribute the load over a large area.
Super-Corrosion-Resistant 316Stainless Steel Heavy Hex Nuts
More corrosion resistant than 18-8 stainless steel nuts, these nuts can be used in saltwater environments. They're considered heavy hex nuts because they are about 10% wider and taller than standard hex nuts and distribute the load over a large area.
Brass Heavy Hex Nuts
Brass nuts are resistant to corrosion in wet environments and electrically conductive. These nuts are considered heavy hex nuts because they are about 10% wider and taller than standard hex nuts and distribute the load over a large area.
Bronze Heavy Hex Nuts
Bronze nuts are stronger and more resistant to salt water than brass nuts. About 10% wider and taller than standard hex nuts, these heavy hex nuts distribute the load over a large area.
Nickel Alloy Heavy Hex Nuts
Made from 400 nickel—also known as Monel—these nuts are often used on valves, pumps, and shafts because they resist salt water and caustic chemicals. They’re considered heavy hex nuts because they’re about 10% wider and taller than standard hex nuts and distribute the load over a large area.
Extreme-Strength Steel Heavy Hex Nutsfor Structural Applications—Grade DH
These nuts are designed to secure ASTM A325 bolts in structural joints. About 10% wider and taller than standard hex nuts, these heavy hex nuts distribute the load over a large area.
High-Strength Steel Heavy Hex Nutsfor Structural Applications—Grade C
These nuts are designed to secure ASTM A325 bolts in structural joints. About 10% wider and taller than standard hex nuts, these heavy hex nuts distribute the load over a large area.
18-8 Stainless Steel Heavy HexNuts for High-Pressure Applications
These nuts have good chemical resistance. They maintain their strength in high-pressure and high-temperature environments and are used with ASTM A193 bolts to fasten pressure tanks, valves, and flanges. About 10% wider and taller than standard hex nuts, these heavy hex nuts distribute the load over a large area.
Super-Corrosion-Resistant 316 Stainless SteelHeavy Hex Nuts for High-Pressure Applications
More corrosion resistant than 18-8 stainless steel nuts, these nuts have excellent resistance to chemicals and salt water. They're able to maintain their strength in high-pressure and high-temperature environments and are used with ASTM A193 bolts to fasten pressure tanks, valves, and flanges. Considered heavy hex nuts, they are about 10% wider and taller than standard hex nuts and distribute the load over a large area.
Steel Heavy Hex Nuts for High-Pressure Applications
Able to maintain their strength in high-pressure and high-temperature environments, these nuts are used with ASTM A193 bolts to fasten pressure tanks, valves, and flanges. They are heavy nuts, so they’re about 10% wider and taller than standard hex nuts and distribute the load over a large area.

Narrow Hex Nuts

18-8 Stainless Steel Narrow Hex Nuts
These 18-8 stainless steel nuts have good chemical resistance and may be mildly magnetic.
Mil. Spec. 18-8 Stainless Steel Narrow Hex Nuts
Choose these nuts for their adherence to strict military standards for material and construction.
Super-Corrosion-Resistant 316Stainless Steel Narrow Hex Nuts
More corrosion resistant than 18-8 stainless steel nuts, these nuts have excellent resistance to chemicals and salt water.
Steel Narrow Hex Nuts
Also known as small-pattern hex nuts, these are about 20% narrower than standard hex nuts for use in tight spaces where standard hex nuts won't fit.
Brass Narrow Hex Nuts
Brass nuts are resistant to corrosion in wet environments and electrically conductive.

High Hex Nuts

Steel High Hex Nuts
Taller than standard hex nuts, these nuts provide a larger gripping area for installation with a wrench.
Metric Steel High Hex Nuts
Taller than standard hex nuts, these metric nuts provide a larger gripping area for installation with a wrench.
Stainless Steel High Hex Nuts
Stainless steel nuts have excellent corrosion resistance in most environments.

Thin Heavy Hex Nuts

Extreme-Strength Steel Thin Heavy Hex Nuts—Grade 2H
These nuts are often used in conjunction with a heavy hex nut to fasten Grade 9 bolts in heavy machinery, such as earth-moving equipment.
Low-Strength Steel Thin Heavy Hex Nuts
Use these nuts for light duty fastening applications, such as securing access panels.
Stainless Steel Thin Heavy Hex Nuts
Stainless steel nuts have excellent corrosion resistance in most environments.
Brass Thin Heavy Hex Nuts
Brass nuts are resistant to corrosion in wet environments and electrically conductive.

Hex Nut Assortments

Hex Nut Assortments

Jam Nuts for Turnbuckles

Jam Nuts for Turnbuckles
Tighten these jam nuts against the turnbuckle body to prevent the fitting from loosening.
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