Bulk 1/2″-13 Unslotted Indent Hex-Washer Serrated Head Thread-Cutting Screws — Type F, Bright-Zinc & Hydrogen-Relief Baked Length:200 Qty - 1/2-13 x 3" Available in both Coarse (UNC)

Available in both Coarse (UNC) and Fine (UNF) threads from 1"-20 to 3/4"-16

Head / Drive: Unslotted indent hex-washer (⅜″ AF) — smooth forge

These precision-machined screws are designed to tap their own threads in pre-drilled holes in thicker metals

Thread Cutting Type: Type F – Designed for thicker metals and pre-drilled holes

Versatile Use: Perfect for marine

Bulk 1/2″-13 Unslotted Indent Hex-Washer Serrated Head Thread-Cutting Screws — Type F, Bright-Zinc & Hydrogen-Relief Baked Length:200 Qty - 1/2-13 x 3" Available in both Coarse (UNC)Monster 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,