Bulk 1/4″-20 Slotted Serrated Hex-Washer Thread-Cutting Screws — Type F, Bright-Zinc Steel 440308 then a factory wax film

then a factory wax film that delivers consistently low seating torque

Thread: 48-2 Thread-Forming tri-lobular (functional ≈ 9 TPI)

1-1/8-7 hex nuts (Made in USA)

9 alloy steel construction ensures peak tensile and preload capacity

Our Metric Tee Nuts with a Zinc CR+3 finish are perfect for applications requiring a strong

Bulk 1/4″-20 Slotted Serrated Hex-Washer Thread-Cutting Screws — Type F, Bright-Zinc Steel 440308 then a factory wax filmMonster Overview Need clamp force, washer coverage and vibration grip in one fastener? Our 1 4 20 Slotted Serrated Hex Washer Thread Cutting Screws do it allideal for trailer frames, dock plates, heavy gauge steel, truck bodies and hardwood to steel builds. Teeth under the flange dig into the mating surface for mild vibration resistance, while the built in washer spreads loadso you can skip separate lock washers and nuts. Heat treated carbon steel