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System of Measurement
Thread Size
Length
Material
Socket Head Profile
Threading
Head Type
Thread Locker Type
Locking Type
Drive Style
Head Diameter
Thread Direction
Head Height
Drive Size
Thread Spacing
Tensile Strength
Thread Fit
Hardness
Alloy Steel Thread-Locking Socket Head Screws
168 Products
Alloy Steel Thread-Locking Socket Head Screws
With a tensile strength of 170,000 psi, these alloy steel screws are among the strongest we carry. They are stronger than Grade 8 steel screws and are nearly two and a half times stronger than stainless steel thread-locking screws. They have a thread locker to prevent loosening from vibration.
Part Number
Thread
Size
Size
Threading
Length
Thread
Type
Type
Head
Diameter
Diameter
Drive Size
Tensile
Strength
Strength
Material
Specifications
Met
Met
Price
JBCAFAADA
0-80
Fully Threaded
1/8"
UNF
0.096"
0.05"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 3.70
JBCAFAADD
0-80
Fully Threaded
3/16"
UNF
0.096"
0.05"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 3.72
JBCAFAADG
0-80
Fully Threaded
1/4"
UNF
0.096"
0.05"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 3.72
JBCAFAAFA
2-56
Fully Threaded
1/8"
UNC
9/64"
5/64"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 4.86
JBCAFAAFD
2-56
Fully Threaded
3/16"
UNC
9/64"
5/64"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 4.76
JBCAFAAGA
2-56
Fully Threaded
1/4"
UNC
9/64"
5/64"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 3.76
JBCAFAAGD
2-56
Fully Threaded
3/8"
UNC
9/64"
5/64"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 3.79
JBCAFAAGG
2-56
Fully Threaded
1/2"
UNC
9/64"
5/64"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 3.82
JBCAFAAGJ
2-56
Fully Threaded
3/4"
UNC
9/64"
5/64"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.07
JBCAFAAHC
2-56
Partially Threaded
1"
UNC
9/64"
5/64"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.20
JBCAFABAB
4-40
Fully Threaded
1/8"
UNC
0.183"
3/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 3.80
JBCAFABAC
4-40
Fully Threaded
3/16"
UNC
0.183"
3/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 3.69
JBCAFABAF
4-40
Fully Threaded
1/4"
UNC
0.183"
3/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 7.03
JBCAFABAI
4-40
Fully Threaded
3/8"
UNC
0.183"
3/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 7.07
JBCAFABBA
4-40
Fully Threaded
1/2"
UNC
0.183"
3/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 7.15
JBCAFABBC
4-40
Fully Threaded
3/4"
UNC
0.183"
3/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 3.24
JBCAFABBF
4-40
Partially Threaded
1"
UNC
0.183"
3/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 3.52
JBCAFABCA
5-40
Fully Threaded
3/8"
UNC
0.205"
3/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 6.68
JBCAFABCE
5-40
Fully Threaded
1/2"
UNC
0.205"
3/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 6.86
JBCAFABEB
6-32
Fully Threaded
1/8"
UNC
0.226"
7/64"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.75
JBCAFABEC
6-32
Fully Threaded
3/16"
UNC
0.226"
7/64"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 3.42
JBCAFABEE
6-32
Fully Threaded
1/4"
UNC
0.226"
7/64"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 4.97
JBCAFABEG
6-32
Fully Threaded
3/8"
UNC
0.226"
7/64"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.04
JBCAFABEI
6-32
Fully Threaded
1/2"
UNC
0.226"
7/64"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.14
JBCAFABFA
6-32
Fully Threaded
5/8"
UNC
0.226"
7/64"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.22
JBCAFABFB
6-32
Fully Threaded
3/4"
UNC
0.226"
7/64"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.30
JBCAFABFC
6-32
Fully Threaded
7/8"
UNC
0.226"
7/64"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.32
JBCAFABFD
6-32
Fully Threaded
1"
UNC
0.226"
7/64"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.68
JBCAFABFG
6-32
Partially Threaded
1 1/2"
UNC
0.226"
7/64"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 3.74
JBCAFABFI
6-32
Partially Threaded
2"
UNC
0.226"
7/64"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 4.01
JBCAFABJB
8-32
Fully Threaded
1/4"
UNC
0.27"
9/64"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 7.18
JBCAFABJC
8-32
Fully Threaded
3/8"
UNC
0.27"
9/64"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.24
JBCAFABJE
8-32
Fully Threaded
1/2"
UNC
0.27"
9/64"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.32
JBCAFABJF
8-32
Fully Threaded
5/8"
UNC
0.27"
9/64"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.41
JBCAFABJH
8-32
Fully Threaded
3/4"
UNC
0.27"
9/64"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.49
JBCAFABJI
8-32
Fully Threaded
7/8"
UNC
0.27"
9/64"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.68
JBCAFABJD
8-32
Fully Threaded
1"
UNC
0.27"
9/64"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 6.06
JBCAFACAB
8-32
Partially Threaded
1 1/4"
UNC
0.27"
9/64"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 6.15
JBCAFACAD
8-32
Partially Threaded
1 1/2"
UNC
0.27"
9/64"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 6.58
JBCAFACAF
8-32
Partially Threaded
2"
UNC
0.27"
9/64"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 3.97
JBCAFACDI
10-24
Fully Threaded
1/4"
UNC
5/16"
5/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 6.94
JBCAFACEA
10-24
Fully Threaded
3/8"
UNC
5/16"
5/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.45
JBCAFACEC
10-24
Fully Threaded
1/2"
UNC
5/16"
5/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.49
JBCAFACEE
10-24
Fully Threaded
5/8"
UNC
5/16"
5/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.64
JBCAFACEF
10-24
Fully Threaded
3/4"
UNC
5/16"
5/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.73
JBCAFACEG
10-24
Fully Threaded
7/8"
UNC
5/16"
5/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 7.14
JBCAFACEH
10-24
Fully Threaded
1"
UNC
5/16"
5/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 6.18
JBCAFACEI
10-24
Partially Threaded
1 1/2"
UNC
5/16"
5/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 7.06
JBCAFACFC
10-24
Partially Threaded
2"
UNC
5/16"
5/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 4.00
JBCAFADDI
10-32
Fully Threaded
1/4"
UNF
5/16"
5/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 6.94
JBCAFADEA
10-32
Fully Threaded
3/8"
UNF
5/16"
5/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.45
JBCAFADEC
10-32
Fully Threaded
1/2"
UNF
5/16"
5/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.49
JBCAFADEE
10-32
Fully Threaded
5/8"
UNF
5/16"
5/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.64
JBCAFADEF
10-32
Fully Threaded
3/4"
UNF
5/16"
5/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.73
JBCAFADEG
10-32
Fully Threaded
7/8"
UNF
5/16"
5/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.94
JBCAFADEH
10-32
Fully Threaded
1"
UNF
5/16"
5/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 6.18
JBCAFADEJ
10-32
Partially Threaded
1 1/4"
UNF
5/16"
5/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 6.38
JBCAFADFB
10-32
Partially Threaded
1 1/2"
UNF
5/16"
5/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 6.84
JBCAFADFD
10-32
Partially Threaded
1 3/4"
UNF
5/16"
5/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 7.11
JBCAFADFF
10-32
Partially Threaded
2"
UNF
5/16"
5/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 7.42
JBCAFADFH
10-32
Partially Threaded
2 1/2"
UNF
5/16"
5/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 4.30
JBCAFADFJ
10-32
Partially Threaded
3"
UNF
5/16"
5/32"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 4.73
JBCAFAFDB
1/4"-20
Fully Threaded
1/4"
UNC
3/8"
3/16"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 3.96
JBCAFAFDD
1/4"-20
Fully Threaded
5/16"
UNC
3/8"
3/16"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 3.20
JBCAFAFDF
1/4"-20
Fully Threaded
3/8"
UNC
3/8"
3/16"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.74
JBCAFAFDG
1/4"-20
Fully Threaded
7/16"
UNC
3/8"
3/16"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 3.55
JBCAFAFDH
1/4"-20
Fully Threaded
1/2"
UNC
3/8"
3/16"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.88
JBCAFAFDI
1/4"-20
Fully Threaded
9/16"
UNC
3/8"
3/16"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 3.91
JBCAFAFDJ
1/4"-20
Fully Threaded
5/8"
UNC
3/8"
3/16"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.93
JBCAFAFEA
1/4"-20
Fully Threaded
3/4"
UNC
3/8"
3/16"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 6.02
JBCAFAFEB
1/4"-20
Fully Threaded
7/8"
UNC
3/8"
3/16"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 6.23
JBCAFAFEC
1/4"-20
Fully Threaded
1"
UNC
3/8"
3/16"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 6.46
JBCAFAFEE
1/4"-20
Fully Threaded
1 1/4"
UNC
3/8"
3/16"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 6.65
JBCAFAFEG
1/4"-20
Partially Threaded
1 1/2"
UNC
3/8"
3/16"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 7.10
JBCAFAFEI
1/4"-20
Partially Threaded
1 3/4"
UNC
3/8"
3/16"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 7.38
JBCAFAFFA
1/4"-20
Partially Threaded
2"
UNC
3/8"
3/16"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 7.72
JBCAFAGHF
1/4"-20
Partially Threaded
2 1/4"
UNC
3/8"
3/16"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.04
JBCAFAFFC
1/4"-20
Partially Threaded
2 1/2"
UNC
3/8"
3/16"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 3.88
JBCAFAFFE
1/4"-20
Partially Threaded
3"
UNC
3/8"
3/16"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 4.74
JBCAFAFGA
1/4"-28
Fully Threaded
1/2"
UNF
3/8"
3/16"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.88
JBCAFAFGB
1/4"-28
Fully Threaded
5/8"
UNF
3/8"
3/16"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 3.45
JBCAFAFGD
1/4"-28
Fully Threaded
3/4"
UNF
3/8"
3/16"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 6.02
JBCAFAFGE
1/4"-28
Fully Threaded
7/8"
UNF
3/8"
3/16"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 4.59
JBCAFAFGF
1/4"-28
Fully Threaded
1"
UNF
3/8"
3/16"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 6.46
JBCAFAGGH
1/4"-28
Fully Threaded
1 1/4"
UNF
3/8"
3/16"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 6.67
JBCAFAGGJ
1/4"-28
Partially Threaded
1 1/2"
UNF
3/8"
3/16"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 7.10
JBCAFAGHB
1/4"-28
Partially Threaded
1 3/4"
UNF
3/8"
3/16"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 7.40
JBCAFAGHD
1/4"-28
Partially Threaded
2"
UNF
3/8"
3/16"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 7.72
JBCAFAFHI
5/16"-18
Fully Threaded
1/2"
UNC
15/32"
1/4"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 6.53
JBCAFAFHJ
5/16"-18
Fully Threaded
5/8"
UNC
15/32"
1/4"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.48
JBCAFAFIB
5/16"-18
Fully Threaded
3/4"
UNC
15/32"
1/4"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 6.74
JBCAFAFIC
5/16"-18
Fully Threaded
7/8"
UNC
15/32"
1/4"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 7.01
JBCAFAFID
5/16"-18
Fully Threaded
1"
UNC
15/32"
1/4"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 7.16
JBCAFAFIF
5/16"-18
Fully Threaded
1 1/4"
UNC
15/32"
1/4"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 3.08
JBCAFAFIH
5/16"-18
Fully Threaded
1 1/2"
UNC
15/32"
1/4"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 3.25
JBCAFAFIE
5/16"-18
Partially Threaded
1 3/4"
UNC
15/32"
1/4"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 3.44
JBCAFAFJB
5/16"-18
Partially Threaded
2"
UNC
15/32"
1/4"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 3.50
JBCAFAFJD
5/16"-18
Partially Threaded
2 1/2"
UNC
15/32"
1/4"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 4.40
JBCAFAFJF
5/16"-18
Partially Threaded
3"
UNC
15/32"
1/4"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 4.78
JBCAFAFJG
5/16"-24
Fully Threaded
1/2"
UNF
15/32"
1/4"
170,000 psi
Black-Oxide Alloy Steel
ASME B18.3, ASTM A574
$ 5.67