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Thread Size
Length
Material
Threading
Head Width
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Thread Direction
Head Height
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Hardness
Min Thread Length
High-Strength Grade 8 SteelThread-Locking Hex Head Screws
47 Products
High-Strength Grade 8 SteelThread-Locking Hex Head Screws
Made from Grade 8 steel, these screws can be used in high-stress applications, such as valves, pumps, motors, and automotive suspension systems. They are more than twice as strong as our stainless steel thread-locking screws. The thread locker helps resist loosening from vibration.
Part Number
Thread
Size
Size
Threading
Length
Thread
Type
Type
Tensile
Strength
Strength
Material
Specifications
Met
Met
Price
JAABJABBA
1/4"-20
Fully Threaded
1/2"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 4.54
JAABJABCA
1/4"-20
Fully Threaded
3/4"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 5.26
JAABJABDA
1/4"-20
Fully Threaded
1"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 6.31
JBCBBABBF
1/4"-20
Partially Threaded
1 1/4"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 13.30
JAABJABFA
1/4"-20
Partially Threaded
1 1/2"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 9.61
JBCBBABCB
1/4"-20
Partially Threaded
1 3/4"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 8.58
JBCBBABCE
1/4"-20
Partially Threaded
2"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 8.44
JBCBBABCH
1/4"-20
Partially Threaded
2 1/2"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 4.49
JBCBBABDB
1/4"-20
Partially Threaded
3"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 4.56
JAABJACFA
5/16"-18
Fully Threaded
3/4"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 7.70
JAABJACGA
5/16"-18
Fully Threaded
1"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 8.02
JAABJACHA
5/16"-18
Fully Threaded
1 1/4"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 6.71
JAABJACIA
5/16"-18
Partially Threaded
1 1/2"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 4.44
JBCBBABEC
5/16"-18
Partially Threaded
1 3/4"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 10.38
JBCBBABEF
5/16"-18
Partially Threaded
2"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 12.17
JBCBBABEI
5/16"-18
Partially Threaded
2 1/2"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 15.16
JBCBBABFB
5/16"-18
Partially Threaded
3"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 6.98
JAABJADCA
3/8"-16
Fully Threaded
3/4"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 4.11
JAABJADDA
3/8"-16
Fully Threaded
1"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 9.59
JAABJADEA
3/8"-16
Fully Threaded
1 1/4"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 6.94
JAABJADFA
3/8"-16
Partially Threaded
1 1/2"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 8.94
JBCBBABFJ
3/8"-16
Partially Threaded
1 3/4"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 5.52
JAABJADGA
3/8"-16
Partially Threaded
2"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 11.96
JBCBBABGG
3/8"-16
Partially Threaded
2 1/2"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 9.82
JBCBBABGJ
3/8"-16
Partially Threaded
3"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 9.54
JBCBBABHC
3/8"-16
Partially Threaded
3 1/2"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 9.90
JBCBBABHF
3/8"-16
Partially Threaded
4"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 11.50
JAABJAEEA
1/2"-13
Fully Threaded
1"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 5.00
JAABJAEFA
1/2"-13
Fully Threaded
1 1/4"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 5.10
JAABJAEGA
1/2"-13
Fully Threaded
1 1/2"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 5.60
JAABJAEHA
1/2"-13
Fully Threaded
1 3/4"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 7.82
JAABJAEIA
1/2"-13
Partially Threaded
2"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 10.72
JBCBBABII
1/2"-13
Partially Threaded
2 1/2"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 10.63
JBCBBABJB
1/2"-13
Partially Threaded
3"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 13.08
JBCBBABJD
1/2"-13
Partially Threaded
3 1/2"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 5.45
JBCBBABJG
1/2"-13
Partially Threaded
4"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 3.70
JBCBBABJJ
1/2"-13
Partially Threaded
5"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 6.44
JBCBBACAD
5/8"-11
Fully Threaded
1 3/4"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 2.04
JBCBBACAG
5/8"-11
Fully Threaded
2"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 3.50
JBCBBACBA
5/8"-11
Partially Threaded
2 1/2"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 4.22
JBCBBACBD
5/8"-11
Partially Threaded
3"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 7.97
JBCBBACBH
5/8"-11
Partially Threaded
3 1/2"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 5.20
JBCBBACCB
3/4"-10
Fully Threaded
2"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 3.89
JBCBBACCE
3/4"-10
Partially Threaded
2 1/2"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 6.14
JBCBBACCG
3/4"-10
Partially Threaded
3"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 4.25
JBCBBACCJ
3/4"-10
Partially Threaded
3 1/2"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 10.24
JBCBBACDD
3/4"-10
Partially Threaded
4"
UNC
150,000 psi
Zinc Yellow-Chromate Plated Steel
ASME B18.2.1, SAE J429
$ 5.70