Bulk 1/2"-20 Hex Flange Bolts, Grade 8 Black Phosphate / Oil Length:150 QTY - 1/2"-20 x 3-1/2" (PT) standard flat washers range between

standard flat washers range between 200 HV and 300 HV on the Vickers Hardness Scale

Head / Drive: Socket Head Cap Screw (SHCS) with 1/16″ hex (Allen)

lightly oiled finish offers mild corrosion resistance

27 mm internal hex for secure torque application and repeatable assembly

deep-drive configuration Material / Grade Black Alloy Steel

Bulk 1/2"-20 Hex Flange Bolts, Grade 8 Black Phosphate / Oil Length:150 QTY - 1/2"-20 x 3-1/2" (PT) standard flat washers range betweenUS Inch Hex Flange Bolts, Grade 8 1 2 20 High Strength Hex Flange Screws ASTM A307 Black Phosphate & Oil Finish Monster Bolts Our US Inch Hex Flange Screws, Grade 8 1 2 20 are engineered for applications requiring superior strength and durability. Crafted from premium Grade 8 steel and finished with a black phosphate and oil coating, these screws offer excellent corrosion resistance and a sleek, professional appearance. The integrated hex flange