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

METRIC THREAD : U.S. INTERNAL / METRIC EXTERNAL
E-Z LOK
Part No.		 Internal
Thread 		External
Thread 		Length
in. 		Tap Drill
Size		 Tap
Size 		Minimum Full
Thread Depth		 Drive Tool
Catalog No.
550-006 6-32 M6-1.0 6.5mm 5.1mm M6-1.0 7.8mm --
550-008 8-32 M8-1.25 7.5 mm 6.9mm M8-1.25 9.0mm 500-1
550-1024 10-24 M10-1.5 10.5mm 6.9mm M8-1.25 12.0mm 500-2
550-1032 10-32 M10-1.5 10.5mm 6.9mm M8-1.25 12.0mm 500-2
550-1420 1/4-20 M12-1.75 12.5 mm 8.6mm M10-1.5 14.5mm 500-3
550-5 5/16-18 M12-1.75 12.5 mm 10.4mm M12-1.75 14.5mm 500-4
550-6 3/8-16 M16-2.0 17.0mm 14.0mm M16-2.0 19.0mm 500-5
550-8 1/2-13 M16-2.0 17.0 mm 14.0mm M16-2.0 19.0mm 500-7

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