Bulk Heavy Hex Nuts – A563 Grade DH, Plain Finish, Coarse Thread, Made in USA – Monster B 440104 Nylon Insert Locking Mechanism: Prevents

Nylon Insert Locking Mechanism: Prevents loosening under vibration

High-Torque Drive: Unslotted 5/16″ A/F hex installs fast and resists cam-out

while the Zinc Yellow CR+6 plating offers a protective layer against corrosion and a bright yellow finish for easy identification

Type: Long Arm Hex Keys with Standard and Ball Ends

050″ while preserving full thread length

Bulk Heavy Hex Nuts – A563 Grade DH, Plain Finish, Coarse Thread, Made in USA – Monster B 440104 Nylon Insert Locking Mechanism: PreventsMonster Overview Fix your project right the first time with A563 Grade DH Heavy Hex Nuts from Monster Bolts. These high strength structural nuts are Made in the USA and built for demanding applications in construction, structural steel, bridges, heavy equipment, and industrial assemblies. The heavy hex profile provides a larger bearing surface and greater wrenching flats compared to standard finished hex nuts, making them ideal anywhere high clamp