High-Strength Grade 8 Steel Thread-Locking Hex Head Screws

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High-Strength Grade 8 Steel Thread-Locking Hex Head Screws

High-Strength Grade 8 Steel Thread-Locking Hex Head Screws are engineered for critical applications requiring maximum tensile strength and fatigue resistance. Manufactured from premium alloy steel and heat-treated to meet rigorous Grade 8 or Class 10.9/12.9 standards, these fasteners provide exceptional clamping force and structural integrity. Ideal for heavy machinery, automotive suspension, and high-stress industrial environments, they ensure long-term reliability where failure is not an option.

Part Number Thread Size Length Threading Specifications Met Thread Type Head Diameter Head Height Material Tensile Strength Hardness
0285FA00001 1/4"-20 1/2" Fully Threaded ASME B18.2.1, SAE J429 UNC - 11/64" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00002 1/4"-20 3/4" Fully Threaded ASME B18.2.1, SAE J429 UNC - 11/64" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00003 1/4"-20 1" Fully Threaded ASME B18.2.1, SAE J429 UNC - 11/64" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00019 1/4"-20 1 1/4" Partially Threaded ASME B18.2.1, SAE J429 UNC - 11/64" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00004 1/4"-20 1 1/2" Partially Threaded ASME B18.2.1, SAE J429 UNC - 11/64" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00020 1/4"-20 1 3/4" Partially Threaded ASME B18.2.1, SAE J429 UNC - 11/64" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00021 1/4"-20 2" Partially Threaded ASME B18.2.1, SAE J429 UNC - 11/64" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00022 1/4"-20 2 1/2" Partially Threaded ASME B18.2.1, SAE J429 UNC - 11/64" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00023 1/4"-20 3" Partially Threaded ASME B18.2.1, SAE J429 UNC - 11/64" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00005 5/16"-18 3/4" Fully Threaded ASME B18.2.1, SAE J429 UNC - 7/32" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00006 5/16"-18 1" Fully Threaded ASME B18.2.1, SAE J429 UNC - 7/32" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00007 5/16"-18 1 1/4" Fully Threaded ASME B18.2.1, SAE J429 UNC - 7/32" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00008 5/16"-18 1 1/2" Partially Threaded ASME B18.2.1, SAE J429 UNC - 7/32" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00024 5/16"-18 1 3/4" Partially Threaded ASME B18.2.1, SAE J429 UNC - 7/32" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00025 5/16"-18 2" Partially Threaded ASME B18.2.1, SAE J429 UNC - 7/32" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00026 5/16"-18 2 1/2" Partially Threaded ASME B18.2.1, SAE J429 UNC - 7/32" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00027 5/16"-18 3" Partially Threaded ASME B18.2.1, SAE J429 UNC - 7/32" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00009 3/8"-16 3/4" Fully Threaded ASME B18.2.1, SAE J429 UNC - 1/4" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00010 3/8"-16 1" Fully Threaded ASME B18.2.1, SAE J429 UNC - 1/4" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00011 3/8"-16 1 1/4" Fully Threaded ASME B18.2.1, SAE J429 UNC - 1/4" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00012 3/8"-16 1 1/2" Partially Threaded ASME B18.2.1, SAE J429 UNC - 1/4" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00028 3/8"-16 1 3/4" Partially Threaded ASME B18.2.1, SAE J429 UNC - 1/4" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00013 3/8"-16 2" Partially Threaded ASME B18.2.1, SAE J429 UNC - 1/4" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00029 3/8"-16 2 1/2" Partially Threaded ASME B18.2.1, SAE J429 UNC - 1/4" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00030 3/8"-16 3" Partially Threaded ASME B18.2.1, SAE J429 UNC - 1/4" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00031 3/8"-16 3 1/2" Partially Threaded ASME B18.2.1, SAE J429 UNC - 1/4" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00032 3/8"-16 4" Partially Threaded ASME B18.2.1, SAE J429 UNC - 1/4" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00014 1/2"-13 1" Fully Threaded ASME B18.2.1, SAE J429 UNC - 5/16" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00015 1/2"-13 1 1/4" Fully Threaded ASME B18.2.1, SAE J429 UNC - 5/16" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00016 1/2"-13 1 1/2" Fully Threaded ASME B18.2.1, SAE J429 UNC - 5/16" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00017 1/2"-13 1 3/4" Fully Threaded ASME B18.2.1, SAE J429 UNC - 5/16" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00018 1/2"-13 2" Partially Threaded ASME B18.2.1, SAE J429 UNC - 5/16" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00033 1/2"-13 2 1/2" Partially Threaded ASME B18.2.1, SAE J429 UNC - 5/16" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00034 1/2"-13 3" Partially Threaded ASME B18.2.1, SAE J429 UNC - 5/16" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00035 1/2"-13 3 1/2" Partially Threaded ASME B18.2.1, SAE J429 UNC - 5/16" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00036 1/2"-13 4" Partially Threaded ASME B18.2.1, SAE J429 UNC - 5/16" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00037 1/2"-13 5" Partially Threaded ASME B18.2.1, SAE J429 UNC - 5/16" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00038 5/8"-11 1 3/4" Fully Threaded ASME B18.2.1, SAE J429 UNC - 13/32" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00039 5/8"-11 2" Fully Threaded ASME B18.2.1, SAE J429 UNC - 13/32" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00040 5/8"-11 2 1/2" Partially Threaded ASME B18.2.1, SAE J429 UNC - 13/32" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00041 5/8"-11 3" Partially Threaded ASME B18.2.1, SAE J429 UNC - 13/32" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00042 5/8"-11 3 1/2" Partially Threaded ASME B18.2.1, SAE J429 UNC - 13/32" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00043 3/4"-10 2" Fully Threaded ASME B18.2.1, SAE J429 UNC - 1/2" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00044 3/4"-10 2 1/2" Partially Threaded ASME B18.2.1, SAE J429 UNC - 1/2" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00045 3/4"-10 3" Partially Threaded ASME B18.2.1, SAE J429 UNC - 1/2" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00046 3/4"-10 3 1/2" Partially Threaded ASME B18.2.1, SAE J429 UNC - 1/2" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
0285FA00047 3/4"-10 4" Partially Threaded ASME B18.2.1, SAE J429 UNC - 1/2" Zinc Yellow-Chromate Plated Steel 150000 psi Rockwell C33
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