UNC
INTERNAL
UNF
INTERNAL
EXTRA
HEAVY WALL
METRIC INTERNAL/
METRIC EXTERNAL
UNC INTERNAL/
METRIC EXTERNAL
METRIC INTERNAL/
UNC EXTERNAL
AUTOMOTIVE

EXTRA HEAVY WALL : COARSE THREAD SIZES
E-Z LOK
Part No.		 Internal
Thread 		External
Thread 		Length
in. 		Tap Drill
Size		 Tap
Size 		Minimum Full
Thread Depth		 Drive Tool
Catalog No.
335-4 1/4-20 1/2-13 .484 27/64 1/2-13 9/16 500-3
335-5 5/16-18 9/16-12 .515 31/64 9/16-12 19/32 500-4
335-6 3/8-16 5/8-11 .656 17/32 5/8-11 23/32 500-5
335-8 1/2-13 7/8-9 .687 49/64 7/8-9 13/16 500-7
335-10 5/8-11 1/8 .781 7/8 1-8 7/8 --

Dimensional Drawing

Mechanical Properties
See installation Video
800.234.5613
240 E. Rosecrans Ave, Gardena, CA 90248
v–310.323.5613 f–310.353.4444