Heavy Jam Nuts - Portland Bolt

Heavy hex jam nuts have the same dimension across the flats as heavy hex nut, but are thinner.

Brass Heavy Hex Jam Nut, Plain Finish, ASME B18.2.2, 1-1/4-7

Hardware ASTM A325

Heavy Hex Bolts - Portland Bolt

Grooving Tools - Portland Bolt

Heavy Jam Nuts - Portland Bolt

Hex Jam Nuts - Portland Bolt

ASTM A325 Heavy Hex Bolts W/Nuts, Galvanized Us/Ca

Ziegler Bolt & Nut House. 3-1/2-4 HEAVY HEX JAM NUT PLAIN

7/8-9 Coarse Thread A194 Grade 2H Heavy Hex Nut - USA Medium

Heavy Hex Jam Nuts Threadline Products Inc.

Plates - Portland Bolt