To match our UNF Flange Bolts Black Grade 8
These all metal locknuts withstand higher temperatures than nylon insert locknuts.
Top thread section is deformed to create two or three locking zones; they start easily by hand, then must be wrenched into final position.
Thread = 16 TPI (Thread per Inch)
UNF (Unified National Fine Thread)
Hexagon head Across the Flats ( AF ) = 1 1/8"
Non-Serrated Flange
Flange Diametre = 1 9/16"
Thickness = 13/16"
High Tensile Grade 8
Plain Black Finish
