Standard Cataloged Acme Inch Screw and Nut Quick Reference Chart - Nook Industries, Inc. PowerAc Acme Screws and Nuts

Go Back

Nook Industries Home

Acme Screw Home

Nook Industries provides a complete selection of inch and metric Ball Screws, Roller Screws, Acme Screws, Lead Screws, End Bearing Supports, Precision Locknuts, Worm Gear Screw Jacks, Electric Actuators, HRC 60 Linear Shafting, Linear Bearings and Pillow Blocks to the Linear Motion Industry.

ACME & LEAD
SCREW ASSEMBLIES

DIGITAL EDITION
	Linear Motion Design Guide: Page through Nook product catalog online.
ORDER Design Guide CD


	Acme & Lead Screw Application Engineering and Customer Service Phone Support 1-800-321-7800 216-271-7900 Email Support



	Click on the NOOK FEEDBACK logo throughout the Nook Industries website to let us know how the site is performing.

STANDARD CATALOGED
INCH ACME SCREW ASSEMBLIES

Repeatable positioning accuracy of 0.0003 in/in (up to 2.5" dia.) 0.0006 in/in (3" dia. and up) Standard diameters from 1/4" to 6" (larger diameters up to 14") Standard leads from 0.050" to 1" Alloy and Stainless Steel Screws Bronze and Plastic Nuts Flanges and EZZE-MOUNT™ end bearing supports are available for a complete lead screw assembly
COMPARE INCH ACME SCREW ASSEMBLIES: sort inch acme screws by a category or view a side-by-side screw comparison. To view a specific screw and nut technical information click on that screw link below.

ACME Screw Size					Bronze Nut				Plastic Nut
DIA-TPI (in.)	LEAD (in.)	ROOT (in.)	HELIX	MATERIAL	STATIC LOAD (lbs.)	DYN. LOAD (lbs.)	TORQUE TO RAISE 1 lb. (in.-lb.)	EFF. %	STATIC LOAD (lbs.)	DYN. LOAD (lbs.)	TORQUE TO RAISE 1 lb. (in.-lb.)	EFF. %	PDF PAGE
1/4 - 3	.333	.192	RH	Alloy/SS	1000	312	.073	73	156	156	.067	79	18
1/4 - 4	.250	.162	RH	SS	1000	312	.056	71	156	156	.053	75	18
1/4 - 16	.062	.162	RH/LH	Alloy/SS	1000	312	.026	39	156	156	.021	46	18
1/4 - 20	.050	.175	RH	SS	1000	312	.002	36	156	156	.020	40	18
5/16 - 2	.500	.216	RH	SS	-	-	-	-	205	205	.099	81	19
5/16 - 4	.250	.216	RH	Alloy/SS	1625	510	.059	67	205	205	.054	73	19
3/8 - 1	1.00	.238	RH	SS	-	-	-	-	351	351	.199	80	20
3/8 - 2	.500	.278	RH	Alloy/SS	2250	703	.107	74	351	351	.101	79	20
3/8 - 4	.250	.278	RH	Alloy/SS	2250	703	.063	63	351	351	.057	69	20
3/8 - 5	.200	.282	RH	Alloy/SS	2250	703	.054	59	351	351	.050	64	20
3/8 - 6	.166	.263	RH/LH	Alloy/SS	2250	703	.049	54	351	351	.044	60	21
3/8 - 8	.125	.278	RH	Alloy/SS	2250	703	.042	48	351	351	.037	54	21
3/8 - 10	.100	.282	RH	Alloy/SS	2250	703	.038	42	351	351	.033	48	21
3/8 - 12	.083	.263	RH/LH	Alloy/SS	2250	703	.036	37	351	351	.031	43	21
3/8 - 16	.062	.286	RH	Alloy/SS	2250	703	.031	32	351	351	.028	35	21
7/16 - 2	.500	.340	RH	Alloy/SS	-	-	-	-	450	450	.103	77	22
7/16 - 4	.250	.340	RH	Alloy/SS	3000	975	.067	60	450	450	.060	66	22
1/2 - 1	1.00	.392	RH	SS	-	-	-	-	625	625	.106	75	23
1/2 - 2	.500	.406	RH	Alloy/SS	4000	1250	.115	69	625	625	.107	75	23
1/2 - 4	.250	.332	RH	Alloy/SS	4000	1250	.070	57	625	625	.064	63	23
1/2 - 5	.200	.391	RH	Alloy/SS	4000	1250	.061	52	625	625	.056	57	23
1/2 - 10	.100	.359	RH/LH	Alloy/SS	4000	1250	.047	34	625	625	.039	40	23
5/8 - 2 2/3	.375	.457	RH/LH	Alloy	6250	1953	.100	60	976	976	.091	66	24
5/8 - 5	.200	.377	RH/LH	Alloy	6250	1953	.072	44	976	976	.060	53	24
5/8 - 5(2)	.200	.484	RH	Alloy/SS	6250	1953	.069	46	976	976	.062	51	24
5/8 - 8	.125	.457	RH/LH	Alloy/SS	6250	1953	.058	34	976	976	.049	40	24
5/8 - 10	.100	.516	RH	Alloy/SS	6250	1953	.053	30	976	976	.046	35	24
3/4 - 2	.500	.581	RH	Alloy	9000	2812	.129	62	1406	1406	.118	68	25
3/4 - 3	.333	.537	RH/LH	Alloy	9000	2812	.099	54	1406	1406	.089	60	25
3/4 - 5	.200	.502	RH/LH	Alloy/SS	9000	2812	.080	40	1406	1406	.066	48	25
3/4 - 6	.166	.537	RH/LH	Alloy/SS	9000	2812	.073	36	1406	1406	.061	43	25
3/4 - 10	.100	.608	RH/LH	Alloy/SS	9000	2812	.064	25	1406	1406	.052	30	25
7/8 - 6	.166	.661	RH/LH	Alloy	12250	3828	.083	32	1914	1914	.068	39	26
1 - 1	1.00	.906	RH/LH	Alloy	16000	5000	.231	69	2500	2500	.216	74	27
1 - 2	.500	.698	RH/LH	Alloy	16000	5000	.139	57	2500	2500	.127	63	27
1 - 4	.250	.698	RH/LH	Alloy/SS	16000	5000	.105	38	2500	2500	.086	46	27
1 - 5	.200	.750	RH/LH	Alloy/SS	16000	5000	.094	34	2500	2500	.079	40	27
1 - 6	.167	.786	RH/LH	Alloy/SS	16000	5000	.089	30	2500	2500	.074	36	27
1 - 10	.100	.857	RH/LH	Alloy/SS	16000	5000	.078	20	2500	2500	.065	24	27
1 1/8 - 5	.200	.875	RH/LH	Alloy	20500	6330	.100	32	3165	3165	.085	37	28
1 1/4 - 4	.250	.947	RH/LH	Alloy/SS	25000	7812	.117	34	3906	3906	.099	40	29
1 1/4 - 5	.200	.999	RH/LH	Alloy/SS	25000	7812	.114	28	3906	3906	.092	35	29
1 1/2 - 2	.500	1.196	RH/LH	Alloy	36000	11250	.173	46	5625	5625	.152	52	30
1 1/2 - 2 2/3	.375	1.066	RH/LH	Alloy/SS	36000	11250	.149	40	5625	5625	.129	46	30
1 1/2 - 4	.250	1.196	RH/LH	Alloy/SS	36000	11250	.133	30	5625	5625	.111	36	30
1 1/2 - 5	.200	1.249	RH/LH	Alloy/SS	36000	11250	.127	25	5625	5625	.105	30	30
1 1/2 - 10	.100	1.355	RH/LH	Alloy	36000	11250	.110	15	5625	5625	.091	17	30
1 3/4 - 4	.250	1.427	RH/LH	Alloy	49900	15312	.153	26	7656	7656	.124	32	31
2 - 2	.500	1.410	RH/LH	Alloy	64000	20000	.199	40	10000	10000	.174	46	32
2 - 4	.250	1.694	RH/LH	Alloy	64000	20000	.166	24	10000	10000	.137	29	32
2 - 5	.200	1.747	RH/LH	Alloy	64000	20000	.159	20	10000	10000	.130	24	32
2 1/4 - 2	.500	1.684	RH/LH	Alloy	81000	25312	.215	37	12656	12656	.188	42	33
2 1/4 - 4	.250	1.944	RH/LH	Alloy	81000	25312	.181	22	12656	12656	.150	27	33
2 1/2 - 2	.500	1.908	RH/LH	Alloy	1000000	31250	.234	34	15625	15625	.204	40	34
2 1/2 - 3	.333	2.106	RH/LH	Alloy	1000000	31250	.212	25	15625	15625	.174	30	34
2 1/2 - 4	.250	2.193	RH/LH	Alloy	1000000	31250	.199	20	15625	15625	.163	24	34
3 - 2	.500	2.410	RH/LH	Alloy	144000	45000	.265	30	-	-	-	-	35
3 3/8 - 1 1/2	.667	2.652	RH	Alloy	192000	60000	.312	34	-	-	-	-	36
3 3/4 - 1 1/2	.667	3.009	RH	Alloy	260000	81000	.345	30	-	-	-	-	37
4 1/2 - 1 1/2	.667	3.782	RH	Alloy	320000	100000	.379	28	-	-	-	-	37
5 - 1 1/2	.667	4.286	RH	Alloy	470000	145000	.398	26	-	-	-	-	38
6 - 1 1/2	.667	5.254	RH<