科克3/4" (19 mm) 系列螺杆组件
	螺杆尺寸列表 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)

螺杆直径: 3/4" (19 mm)

适配螺母: ZBA, NTB, VHD, BFW

直径		直径代码	导程		导程代码	左旋螺纹	外径(参考)		底径 (供参考)		效率 %*
inches	mm		in	mm			in	mm	in	mm
3/4	19	075	0.0625	1.59	0063		0.750	19.05	0.671	17.04	25
			0.098	2.50	0098		0.742	18.85	0.626	15.90	35
			0.100	2.54	0100	√	0.746	18.95	0.624	15.85	35
			0.1667	4.23	0167		0.727	18.47	0.645	16.38	47
			0.197	5.00	0197		0.745	18.92	0.624	15.85	51
			0.200	5.08	0200		0.741	18.82	0.632	16.05	52
			0.250	6.35	0250		0.731	18.57	0.639	16.23	57
			0.276	7.00	0276		0.750	19.05	0.624	15.85	59
			0.333	8.46	0333		0.750	19.05	0.624	15.85	64
			0.394	10.00	0394		0.745	18.92	0.619	15.72	68
			0.500	12.70	0500		0.744	18.90	0.623	15.82	73
			0.551	14.00	0551		0.750	19.05	0.624	15.85	73
			0.591	15.00	0591		0.749	19.02	0.623	15.82	74
			0.709	18.00	0709		0.780	19.81	0.650	16.51	77
			0.748	19.00	0748		0.672	17.07	0.547	13.89	80
			0.787	20.00	0787		0.780	19.81	0.648	16.46	78
			0.800	20.32	0800		0.750	19.05	0.618	15.70	79
			0.945	24.00	0945		0.734	18.64	0.633	16.08	80
			1.000	25.40	1000	√	0.743	18.87	0.619	15.72	81
			1.500	38.10	1500	√	0.712	18.08	0.590	14.99	84
			1.969	50.00	1969		0.751	19.08	0.620	15.75	84
			2.000	50.80	2000	√	0.742	18.85	0.611	15.52	84
			2.400	60.96	2400	√	0.750	19.05	0.620	15.75	84
			3.622	92.00	3622	√	0.750	19.05	0.634	16.10	87

*表中的效率值基于Kerkote^® TFE 涂层螺杆的理论值.