Bulk Heavy Hex Nuts – A563 Grade C, Plain Finish, Coarse Thread, Made in USA – Monster B Size:500 Qty - 1"-8 chips exit through the flute—no

chips exit through the flute—no backing nut

Bulk Availability: Cost-effective solution for large projects and industrial applications

clean fastening and mild corrosion protection

Our DIN 985 thin locknuts are precision-engineered for performance

A tri-lobular thread-rolling point forms clean internal threads as it drives

Bulk Heavy Hex Nuts – A563 Grade C, Plain Finish, Coarse Thread, Made in USA – Monster B Size:500 Qty - 1"-8 chips exit through the flute—noMonster Overview Fix your project right the first time with A563 Grade C Heavy Hex Nuts from Monster Bolts. These structural heavy hex nuts are Made in the USA and designed for use in construction, structural steel, machinery, OEM fabrication, and industrial installations. The heavy hex pattern provides a larger bearing surface and wrenching flat compared to standard finished hex nuts, delivering improved clamping force and durability in high load