Bulk 1/2″-13 Unslotted Indent Hex-Washer Serrated Head Thread-Cutting Screws — Type F, Bright-Zinc & Hydrogen-Relief Baked Size_# 8-36 - Fine Bulk 5/16"-18 Carriage Bolts A307

Bulk 5/16"-18 Carriage Bolts A307 Grade A Coarse HDG

Thread Cutting: Type F point for cutting clean internal threads into metal

Strong and Reliable Fasteners for Construction

they are heat-treated to Rockwell C38-45 for abrasion resistance yet retain stainless corrosion protection

Bulk 1/2″-13 Unslotted Indent Hex-Washer Serrated Head Thread-Cutting Screws — Type F, Bright-Zinc & Hydrogen-Relief Baked Size_# 8-36 - Fine Bulk 5/16"-18 Carriage Bolts A307Monster Overview: Engineered for truck beds, heavy trailer decks, dock framing and structural steel, these 1 2 13 Unslotted Indent Hex Washer Serrated Thread Cutting Screws deliver maximum clamp load that stays put. Heat treated carbon steel blanks receive a high luster bright zinc electro plate, are hydrogen relief baked, then factory dry waxed for consistently low seating torque. The integral washers radial serrations bite into steel or wood,