Bulk Heavy Hex Nuts – A563 Grade DH, Plain Finish, Coarse Thread, Made in USA – Monster B 440104 The head gives you installation

The head gives you installation freedom: a stout 5/16″ across-flats hex for high-torque driving

Nylon Insert Locking Mechanism: Prevents loosening under vibration

050″ while preserving full thread length

Flush Countersunk Head: Perfect for assemblies requiring a smooth

Type: Long Arm Hex Keys with Standard and Ball Ends

Bulk Heavy Hex Nuts – A563 Grade DH, Plain Finish, Coarse Thread, Made in USA – Monster B 440104 The head gives you installationMonster 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