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Thread Size
Length
Material
Finish
Drive Style
Rounded Head Style
Threading
Head Diameter
Head Height
Thread Direction
Rounded Head Profile
Drive Size
Thread Spacing
Tensile Strength
Thread Fit
Hardness
Stainless Steel Pan Head Screws with External-Tooth Lock Washer
49 Products
Stainless Steel Pan Head Screws with External-Tooth Lock Washer
Made from stainless steel, these screws have good chemical resistance and may be mildly magnetic. All have a washer with sharp external teeth that dig into surfaces for maximum holding power and vibration resistance. Also known as Sems screws, the washer rotates freely but is permanently attached.
Part Number
Thread
Size
Size
Threading
Length
Thread
Type
Type
Head
Diameter
Diameter
Drive Size
Tensile
Strength
Strength
Material
Specifications
Met
Met
Price
JFDEFAECC
4-40
Fully Threaded
3/16"
UNC
0.219"
No. 1
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 6.12
JFDEFAECG
4-40
Fully Threaded
1/4"
UNC
0.219"
No. 1
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 4.01
JFDEFAECI
4-40
Fully Threaded
5/16"
UNC
0.219"
No. 1
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 4.93
JFDEFAEDC
4-40
Fully Threaded
3/8"
UNC
0.219"
No. 1
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 4.97
JFDEFAEDG
4-40
Fully Threaded
7/16"
UNC
0.219"
No. 1
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 7.06
JFDEFAEDI
4-40
Fully Threaded
1/2"
UNC
0.219"
No. 1
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 6.48
JFDEFAEEC
4-40
Fully Threaded
5/8"
UNC
0.219"
No. 1
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 7.54
JFDEFAEEE
4-40
Fully Threaded
3/4"
UNC
0.219"
No. 1
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 5.58
JFDEFAEEG
4-40
Fully Threaded
7/8"
UNC
0.219"
No. 1
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 5.80
JFDEFAEFA
4-40
Fully Threaded
1"
UNC
0.219"
No. 1
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 7.58
JFDEFAEFE
6-32
Fully Threaded
3/16"
UNC
0.27"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 6.36
JFDEFAEFI
6-32
Fully Threaded
1/4"
UNC
0.27"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 3.54
JFDEFAEGE
6-32
Fully Threaded
5/16"
UNC
0.27"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 3.66
JFDEFAEGI
6-32
Fully Threaded
3/8"
UNC
0.27"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 3.73
JFDEFAEHE
6-32
Fully Threaded
7/16"
UNC
0.27"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 4.36
JFDEFAEHG
6-32
Fully Threaded
1/2"
UNC
0.27"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 3.88
JFDEFAEHI
6-32
Fully Threaded
5/8"
UNC
0.27"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 3.73
JFDEFAEIC
6-32
Fully Threaded
3/4"
UNC
0.27"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 4.34
JFDEFAEIG
6-32
Fully Threaded
7/8"
UNC
0.27"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 6.76
JFDEFAEII
6-32
Fully Threaded
1"
UNC
0.27"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 7.02
JFDEFAEIJ
6-32
Fully Threaded
1 1/4"
UNC
0.27"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 7.79
JFDEFAEJA
6-32
Fully Threaded
1 1/2"
UNC
0.27"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 7.96
JFDEFAFCC
8-32
Fully Threaded
1/4"
UNC
0.322"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 7.70
JFDEFAFCG
8-32
Fully Threaded
5/16"
UNC
0.322"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 8.06
JFDEFAFDA
8-32
Fully Threaded
3/8"
UNC
0.322"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 8.40
JFDEFAFDG
8-32
Fully Threaded
7/16"
UNC
0.322"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 6.06
JFDEFAFDI
8-32
Fully Threaded
1/2"
UNC
0.322"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 4.84
JFDEFAFEE
8-32
Fully Threaded
5/8"
UNC
0.322"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 6.52
JFDEFAFEI
8-32
Fully Threaded
3/4"
UNC
0.322"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 5.40
JFDEFAFFE
8-32
Fully Threaded
1"
UNC
0.322"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 7.82
JFDEFAFFF
8-32
Fully Threaded
1 1/4"
UNC
0.322"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 6.54
JFDEFAFFH
10-24
Fully Threaded
3/8"
UNC
0.373"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 5.16
JFDEFAFFI
10-24
Fully Threaded
1/2"
UNC
0.373"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 5.44
JFDEFAFFJ
10-24
Fully Threaded
5/8"
UNC
0.373"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 4.50
JFDEFAFGB
10-32
Fully Threaded
1/4"
UNF
0.373"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 6.14
JFDEFAFGC
10-32
Fully Threaded
3/8"
UNF
0.373"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 5.18
JFDEFAFGG
10-32
Fully Threaded
1/2"
UNF
0.373"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 5.32
JFDEFAFGI
10-32
Fully Threaded
5/8"
UNF
0.373"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 5.70
JFDEFAFHC
10-32
Fully Threaded
3/4"
UNF
0.373"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 6.26
JFDEFAFHE
10-32
Fully Threaded
1"
UNF
0.373"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 5.26
JFDEFAFHG
10-32
Fully Threaded
1 1/4"
UNF
0.373"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 5.49
JFDEFAFHI
10-32
Fully Threaded
1 1/2"
UNF
0.373"
No. 2
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 4.41
JFDEFAFIF
12-24
Fully Threaded
1/2"
UNC
0.425"
No. 3
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 6.00
JFDEFAFJJ
1/4"-20
Fully Threaded
3/8"
UNC
0.492"
No. 3
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 3.48
JFDEFAGAB
1/4"-20
Fully Threaded
1/2"
UNC
0.492"
No. 3
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 2.38
JFDEFAGAD
1/4"-20
Fully Threaded
5/8"
UNC
0.492"
No. 3
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 2.33
JFDEFAGAG
1/4"-20
Fully Threaded
3/4"
UNC
0.492"
No. 3
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 2.37
JFDEFAGAH
1/4"-20
Fully Threaded
7/8"
UNC
0.492"
No. 3
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 3.56
JFDEFAGAJ
1/4"-20
Fully Threaded
1"
UNC
0.492"
No. 3
70,000 psi
18-8 Stainless Steel
ASME B18.13
$ 2.58