Left-Hand-Thread Stainless Steel Hex-Drive Flat Head Screws

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Left-Hand-Thread Stainless Steel Hex-Drive Flat Head Screws

Left-Hand-Thread Stainless Steel Hex-Drive Flat Head Screws are precision-engineered for applications requiring a smooth, flush finish. Manufactured from premium materials and treated for enhanced durability, these fasteners provide exceptional structural integrity. Ideal for machinery, electronics, and construction, they ensure long-term reliability in demanding environments.

System of Measurement
Inch Metric
Thread Size
4-40 6-32 8-32 10-32 1/4"-20 M3 M4 M5 M6 M8
Length
1/4" 1/2" 3/4" 1" 6 mm 8 mm 10 mm 12 mm 16 mm 20 mm 25 mm
Head Diameter
0.255" 0.307" 0.359" 0.411" 0.531" 6 mm 8 mm 10 mm 12 mm 16 mm
Head Height
0.083" 0.097" 0.112" 0.127" 0.161" 1.7 mm 2.3 mm 2.8 mm 3.3 mm 4.4 mm
Thread Pitch
0.5 mm 0.7 mm 0.8 mm 1 mm 1.25 mm
Thread Diameter
0.112" 0.138" 0.164" 0.19" 0.25"
Thread Type
Metric UNC UNF
Drive Size
1/16" 1/8" 2 mm 2.5 mm 3 mm 3/32" 4 mm 5 mm 5/32" 5/64"
Part Number Thread Size Length Threading Specifications Met Thread Type Head Diameter Head Height Material Tensile Strength Hardness
0306FA00001 4-40 1/4" Fully Threaded - UNC 0.255" 0.083" 18-8 Stainless Steel 70000 psi Rockwell B70
0306FA00002 4-40 1/2" Fully Threaded - UNC 0.255" 0.083" 18-8 Stainless Steel 70000 psi Rockwell B70
0306FA00003 6-32 1/4" Fully Threaded - UNC 0.307" 0.097" 18-8 Stainless Steel 70000 psi Rockwell B70
0306FA00004 6-32 1/2" Fully Threaded - UNC 0.307" 0.097" 18-8 Stainless Steel 70000 psi Rockwell B70
0306FA00005 8-32 1/2" Fully Threaded - UNC 0.359" 0.112" 18-8 Stainless Steel 70000 psi Rockwell B70
0306FA00006 8-32 3/4" Fully Threaded - UNC 0.359" 0.112" 18-8 Stainless Steel 70000 psi Rockwell B70
0306FA00007 10-32 1/2" Fully Threaded - UNF 0.411" 0.127" 18-8 Stainless Steel 70000 psi Rockwell B70
0306FA00008 10-32 3/4" Fully Threaded - UNF 0.411" 0.127" 18-8 Stainless Steel 70000 psi Rockwell B70
0306FA00009 1/4"-20 1/2" Fully Threaded - UNC 0.531" 0.161" 18-8 Stainless Steel 70000 psi Rockwell B70
0306FA00010 1/4"-20 1" Fully Threaded - UNC 0.531" 0.161" 18-8 Stainless Steel 70000 psi Rockwell B70
0306FA00011 M3 6 mm Fully Threaded - Metric 6 mm 1.7 mm 18-8 Stainless Steel 70000 psi Rockwell B70
0306FA00012 M3 10 mm Fully Threaded - Metric 6 mm 1.7 mm 18-8 Stainless Steel 70000 psi Rockwell B70
0306FA00013 M4 8 mm Fully Threaded - Metric 8 mm 2.3 mm 18-8 Stainless Steel 70000 psi Rockwell B70
0306FA00014 M4 12 mm Fully Threaded - Metric 8 mm 2.3 mm 18-8 Stainless Steel 70000 psi Rockwell B70
0306FA00015 M5 10 mm Fully Threaded - Metric 10 mm 2.8 mm 18-8 Stainless Steel 70000 psi Rockwell B70
0306FA00016 M5 16 mm Fully Threaded - Metric 10 mm 2.8 mm 18-8 Stainless Steel 70000 psi Rockwell B70
0306FA00017 M6 12 mm Fully Threaded - Metric 12 mm 3.3 mm 18-8 Stainless Steel 70000 psi Rockwell B70
0306FA00018 M6 20 mm Fully Threaded - Metric 12 mm 3.3 mm 18-8 Stainless Steel 70000 psi Rockwell B70
0306FA00019 M8 16 mm Fully Threaded - Metric 16 mm 4.4 mm 18-8 Stainless Steel 70000 psi Rockwell B70
0306FA00020 M8 25 mm Fully Threaded - Metric 16 mm 4.4 mm 18-8 Stainless Steel 70000 psi Rockwell B70
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