Bulk Heavy Hex Nuts – A563 Grade C, Plain Finish, Coarse Thread, Made in USA – Monster B Size:1800 Qty - 5/8"-11 and mechanical assemblies requiring strength

and mechanical assemblies requiring strength and a clean finish

Matching Washers: 3/8" Flat Washers - Available here

Machinery and equipment anchoring

Thread Cutting: Type F cutting point taps clean threads in thicker metal

Check out our full Metric thread-forming screw range for thermoplastics

Bulk Heavy Hex Nuts – A563 Grade C, Plain Finish, Coarse Thread, Made in USA – Monster B Size:1800 Qty - 5/8"-11 and mechanical assemblies requiring strengthMonster 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