Thread Size
Length
Material
Drive Style
Rounded Head Style
Threading
Head Diameter
Head Height
Thread Direction
Rounded Head Profile
Drive Size
Thread Spacing
Tensile Strength
Thread Fit
Hardness
Steel Pan Head Screws with External-Tooth Lock Washer
47 Products
Steel Pan Head Screws with External-Tooth Lock Washer
The washer on these screws has 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
JAEACABAE
4-40
Fully Threaded
3/16"
UNC
0.219"
No. 1
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 4.62
JAEACABAG
4-40
Fully Threaded
1/4"
UNC
0.219"
No. 1
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 3.84
JAEACABAH
4-40
Fully Threaded
5/16"
UNC
0.219"
No. 1
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 4.91
JAEACABAI
4-40
Fully Threaded
3/8"
UNC
0.219"
No. 1
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 3.88
JAEACABAJ
4-40
Fully Threaded
7/16"
UNC
0.219"
No. 1
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 5.64
JAEACABBA
4-40
Fully Threaded
1/2"
UNC
0.219"
No. 1
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 4.17
JAEACABBC
4-40
Fully Threaded
5/8"
UNC
0.219"
No. 1
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 6.98
JAEACABBE
4-40
Fully Threaded
3/4"
UNC
0.219"
No. 1
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 7.01
JAEACABBH
4-40
Fully Threaded
7/8"
UNC
0.219"
No. 1
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 4.33
JAEACABCA
4-40
Fully Threaded
1"
UNC
0.219"
No. 1
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 4.33
JAEACABEC
6-32
Fully Threaded
3/16"
UNC
0.27"
No. 2
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 4.64
JAEACABEE
6-32
Fully Threaded
1/4"
UNC
0.27"
No. 2
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 3.69
JAEACABEF
6-32
Fully Threaded
5/16"
UNC
0.27"
No. 2
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 4.00
JAEACABEG
6-32
Fully Threaded
3/8"
UNC
0.27"
No. 2
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 4.08
JAEACABEJ
6-32
Fully Threaded
7/16"
UNC
0.27"
No. 2
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 4.55
JAEACABEI
6-32
Fully Threaded
1/2"
UNC
0.27"
No. 2
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 4.25
JAEACABFA
6-32
Fully Threaded
5/8"
UNC
0.27"
No. 2
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 5.00
JAEACABFB
6-32
Fully Threaded
3/4"
UNC
0.27"
No. 2
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 5.42
JAEACABFC
6-32
Fully Threaded
7/8"
UNC
0.27"
No. 2
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 6.26
JAEACABFD
6-32
Fully Threaded
1"
UNC
0.27"
No. 2
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 6.96
JAEACABFF
6-32
Fully Threaded
1 1/4"
UNC
0.27"
No. 2
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 7.98
JAEACABFI
6-32
Fully Threaded
1 1/2"
UNC
0.27"
No. 2
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 5.72
JAEACABJA
8-32
Fully Threaded
1/4"
UNC
0.322"
No. 2
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 4.16
JAEACABJB
8-32
Fully Threaded
5/16"
UNC
0.322"
No. 2
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 5.26
JAEACABJC
8-32
Fully Threaded
3/8"
UNC
0.322"
No. 2
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 3.77
JAEACABJF
8-32
Fully Threaded
7/16"
UNC
0.322"
No. 2
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 5.49
JAEACABJE
8-32
Fully Threaded
1/2"
UNC
0.322"
No. 2
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 4.50
JAEACABJG
8-32
Fully Threaded
5/8"
UNC
0.322"
No. 2
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 5.78
JAEACABJH
8-32
Fully Threaded
3/4"
UNC
0.322"
No. 2
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 5.70
JAEACACAA
8-32
Fully Threaded
1"
UNC
0.322"
No. 2
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 4.40
JAEACACAB
8-32
Fully Threaded
1 1/4"
UNC
0.322"
No. 2
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 5.03
JAEACAFCH
10-24
Fully Threaded
3/8"
UNC
0.373"
No. 2
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 4.97
JAEACACEC
10-24
Fully Threaded
1/2"
UNC
0.373"
No. 2
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 5.39
JAEACACEG
10-24
Fully Threaded
5/8"
UNC
0.373"
No. 2
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 3.77
JAEACAIDA
10-32
Fully Threaded
5/8"
UNF
0.373"
No. 2
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 4.19
JAEACAIDB
10-32
Fully Threaded
3/4"
UNF
0.373"
No. 2
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 2.91
JAEACAIDF
10-32
Fully Threaded
1"
UNF
0.373"
No. 2
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 5.86
JAEACAIDJ
10-32
Fully Threaded
1 1/4"
UNF
0.373"
No. 2
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 6.23
JAEACAIEC
10-32
Fully Threaded
1 1/2"
UNF
0.373"
No. 2
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 3.32
JAEACAGAF
12-24
Fully Threaded
1/2"
UNC
0.425"
No. 3
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 6.34
JAEACAGBA
1/4"-20
Fully Threaded
3/8"
UNC
0.492"
No. 3
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 7.44
JAEACAFDH
1/4"-20
Fully Threaded
1/2"
UNC
0.492"
No. 3
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 3.22
JAEACAFDI
1/4"-20
Fully Threaded
5/8"
UNC
0.492"
No. 3
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 5.68
JAEACAFEA
1/4"-20
Fully Threaded
3/4"
UNC
0.492"
No. 3
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 4.08
JAEACAFEG
1/4"-20
Fully Threaded
7/8"
UNC
0.492"
No. 3
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 4.47
JAEACAFFB
1/4"-20
Fully Threaded
1"
UNC
0.492"
No. 3
60,000 psi
Zinc-Plated Steel
ASME B18.13
$ 4.58
JAEACAIED
1/4"-20
Fully Threaded
1 1/2"
UNC
0.492"
No. 3
Not Rated
Zinc-Plated Steel
ASME B18.13
$ 3.32