1/4" (6 mm) KERK® LEAD SCREW ASSEMBLIES Part Number Construction
	Lead Screw Size List 1/8" (3.2 mm) 0.132" (3.3 mm) 9/64" (3.6 mm) 5/32" (4 mm) 3/16" (5 mm) 7/32" (5.6 mm) 1/4" (6 mm) 5/16" (8 mm) 3/8" (10 mm) 7/16" (11 mm) 1/2" (13 mm) 5/8" (16 mm) 3/4" (19 mm) 7/8" (22 mm) 15/16" (24 mm)

Nominal Screw Diameter: 1/4" (6 mm)

Compatible Lead Screw Nut Styles: CMP, ZBX, ZBA, WDG, NTB, NTG, BFW

Diameter		Diameter Code	Lead		Lead Code	Left Hand Avail.	Outside Diameter (For Reference)		Root Diameter (For Reference)		Efficiency %*
inches	mm		in	mm			in	mm	in	mm
1/4	6	025	0.024	0.61	0024		0.250	6.35	0.218	5.54	28
			0.025	0.64	0025		0.250	6.35	0.214	5.44	30
			0.03125	0.79	0031		0.250	6.35	0.208	5.28	34
			0.039	1.00	0039		0.250	6.35	0.190	4.83	40
			0.048	1.22	0048		0.250	6.35	0.190	4.83	45
			0.050	1.27	0050	√	0.250	6.35	0.191	4.85	46
			0.059	1.50	0059		0.250	6.35	0.172	4.37	52
			0.0625	1.59	0063		0.250	6.35	0.170	4.32	52
			0.079	2.00	0079		0.250	6.35	0.170	4.32	59
			0.096	2.44	0096		0.250	6.35	0.190	4.83	61
			0.100	2.54	0100		0.250	6.35	0.190	4.83	62
			0.118	3.00	0118		0.250	6.35	0.175	4.45	68
			0.125	3.18	0125		0.250	6.35	0.190	4.83	67
			0.197	5.00	0197		0.250	6.35	0.172	4.37	72
			0.200	5.08	0200		0.250	6.35	0.170	4.32	65
			0.250	6.35	0250	√	0.250	6.35	0.168	4.27	79
			0.3125	7.94	0313		0.250	6.35	0.184	4.67	81
			0.333	8.46	0333		0.250	6.35	0.170	4.32	82
			0.394	10.00	0394		0.250	6.35	0.170	4.32	78
			0.400	10.16	0400		0.250	6.35	0.170	4.32	84
			0.500	12.70	0500	√	0.250	6.35	0.169	4.29	85
			0.750	19.05	0750		0.250	6.35	0.170	4.32	86
			1.000	25.40	1000	√	0.250	6.35	0.170	4.32	84

*Listed efficiencies are theoretical values based on Kerkote^® TFE coated lead screws.

Shaded areas have been translated from their designed inch or mm dimension to an equivalent mm or inch dimension.