Bulk Heavy Hex Nuts – A563 Grade DH, Plain Finish, Coarse Thread, Made in USA – Monster B 440104 Matching Hardware: Pair these screws

Matching Hardware: Pair these screws with compatible zinc-plated washers and accessories from Monster Bolts for a clean

Nylon Insert Locking Mechanism: Prevents loosening under vibration

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

High Strength: Alloy steel construction provides exceptional tensile strength and consistent torque performance

manufacturing quality

Bulk Heavy Hex Nuts – A563 Grade DH, Plain Finish, Coarse Thread, Made in USA – Monster B 440104 Matching Hardware: Pair these screwsMonster 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