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System of Measurement
Thread Size
Length
Material
Drive Style
Rounded Head Style
Threading
Head Diameter
Head Height
Thread Direction
Thread Pitch
Rounded Head Profile
Drive Size
Thread Spacing
Tensile Strength
Thread Fit
Hardness
Left-Hand Threaded Rounded Head Screws
36 Products
Left-Hand Threaded Rounded Head Screws
Tighten these screws by turning them to the left; once fastened, they prevent loosening from counterclockwise motion.
Part Number
Thread
Size
Size
Threading
Length
Thread
Type
Type
Head
Diameter
Diameter
Drive Size
Tensile
Strength
Strength
Material
Price
JFJFFACCD
4-40
Fully Threaded
1/4"
UNC
0.213"
1/16"
80,000 psi
18-8 Stainless Steel
$ 3.72
JFJFFACCG
4-40
Fully Threaded
3/8"
UNC
0.213"
1/16"
80,000 psi
18-8 Stainless Steel
$ 4.65
JFJFFACCJ
4-40
Fully Threaded
1/2"
UNC
0.213"
1/16"
80,000 psi
18-8 Stainless Steel
$ 4.94
JFJFFACDC
4-40
Fully Threaded
3/4"
UNC
0.213"
1/16"
80,000 psi
18-8 Stainless Steel
$ 5.26
JFJFFACEF
6-32
Fully Threaded
3/8"
UNC
0.262"
5/64"
80,000 psi
18-8 Stainless Steel
$ 4.06
JFJFFACEI
6-32
Fully Threaded
1/2"
UNC
0.262"
5/64"
80,000 psi
18-8 Stainless Steel
$ 4.28
JFJFFACFB
6-32
Fully Threaded
3/4"
UNC
0.262"
5/64"
80,000 psi
18-8 Stainless Steel
$ 4.57
JFJFFACFE
6-32
Fully Threaded
1"
UNC
0.262"
5/64"
80,000 psi
18-8 Stainless Steel
$ 5.03
JFJFFACGH
8-32
Fully Threaded
3/8"
UNC
0.312"
3/32"
80,000 psi
18-8 Stainless Steel
$ 4.28
JFJFFACHA
8-32
Fully Threaded
1/2"
UNC
0.312"
3/32"
80,000 psi
18-8 Stainless Steel
$ 4.70
JFJFFACHD
8-32
Fully Threaded
3/4"
UNC
0.312"
3/32"
80,000 psi
18-8 Stainless Steel
$ 5.88
JFJFFACHG
8-32
Fully Threaded
1"
UNC
0.312"
3/32"
80,000 psi
18-8 Stainless Steel
$ 6.90
JFJFFACIJ
10-32
Fully Threaded
3/8"
UNF
0.361"
1/8"
80,000 psi
18-8 Stainless Steel
$ 4.95
JFJFFACJC
10-32
Fully Threaded
1/2"
UNF
0.361"
1/8"
80,000 psi
18-8 Stainless Steel
$ 5.64
JFJFFACJF
10-32
Fully Threaded
3/4"
UNF
0.361"
1/8"
80,000 psi
18-8 Stainless Steel
$ 6.31
JFJFFACJI
10-32
Fully Threaded
1"
UNF
0.361"
1/8"
80,000 psi
18-8 Stainless Steel
$ 6.70
JFJFFADAB
1/4"-20
Fully Threaded
3/8"
UNC
0.437"
5/32"
80,000 psi
18-8 Stainless Steel
$ 5.47
JFJFFADAE
1/4"-20
Fully Threaded
1/2"
UNC
0.437"
5/32"
80,000 psi
18-8 Stainless Steel
$ 5.96
JFJFFADAH
1/4"-20
Fully Threaded
3/4"
UNC
0.437"
5/32"
80,000 psi
18-8 Stainless Steel
$ 6.38
JFJFFADBA
1/4"-20
Fully Threaded
1"
UNC
0.437"
5/32"
80,000 psi
18-8 Stainless Steel
$ 6.96
JFJECABBB
M3
Fully Threaded
6 mm
Metric
5.7 mm
2 mm
80,000 psi
18-8 Stainless Steel
$ 4.05
JFJECABBC
M3
Fully Threaded
8 mm
Metric
5.7 mm
2 mm
80,000 psi
18-8 Stainless Steel
$ 4.38
JFJECABBD
M3
Fully Threaded
10 mm
Metric
5.7 mm
2 mm
80,000 psi
18-8 Stainless Steel
$ 4.77
JFJECABBE
M3
Fully Threaded
12 mm
Metric
5.7 mm
2 mm
80,000 psi
18-8 Stainless Steel
$ 5.16
JFJECABBF
M4
Fully Threaded
8 mm
Metric
7.6 mm
2.5 mm
80,000 psi
18-8 Stainless Steel
$ 4.64
JFJECABBG
M4
Fully Threaded
10 mm
Metric
7.6 mm
2.5 mm
80,000 psi
18-8 Stainless Steel
$ 5.16
JFJECABBH
M4
Fully Threaded
12 mm
Metric
7.6 mm
2.5 mm
80,000 psi
18-8 Stainless Steel
$ 5.49
JFJECABBI
M4
Fully Threaded
16 mm
Metric
7.6 mm
2.5 mm
80,000 psi
18-8 Stainless Steel
$ 5.75
JFJECABBJ
M5
Fully Threaded
10 mm
Metric
9.5 mm
3 mm
80,000 psi
18-8 Stainless Steel
$ 4.82
JFJECABCB
M5
Fully Threaded
12 mm
Metric
9.5 mm
3 mm
80,000 psi
18-8 Stainless Steel
$ 5.17
JFJECABCC
M5
Fully Threaded
16 mm
Metric
9.5 mm
3 mm
80,000 psi
18-8 Stainless Steel
$ 5.58
JFJECABCD
M5
Fully Threaded
20 mm
Metric
9.5 mm
3 mm
80,000 psi
18-8 Stainless Steel
$ 6.22
JFJECABCE
M6
Fully Threaded
10 mm
Metric
10.5 mm
4 mm
80,000 psi
18-8 Stainless Steel
$ 5.33
JFJECABCF
M6
Fully Threaded
12 mm
Metric
10.5 mm
4 mm
80,000 psi
18-8 Stainless Steel
$ 5.80
JFJECABCG
M6
Fully Threaded
16 mm
Metric
10.5 mm
4 mm
80,000 psi
18-8 Stainless Steel
$ 6.32
JFJECABCH
M6
Fully Threaded
20 mm
Metric
10.5 mm
4 mm
80,000 psi
18-8 Stainless Steel
$ 7.11