Locknut MSR

Precision Components

Standard Precision Locknut

Inch and metric available

Inch Specs & CAD

MSR Series - Inch

Special versions and spanner wrenches available on request.

Special Locknuts with American Standard Threads are made to your specifications.

Designation of a locknut with d1 = 17mm x 32 threads/in.
Locknut MSR 17 x 32
d1 = 5/8” x 18 threads/in.
Locknut MSR 5/8” x 18
The allowable axial loads specified in the table are guideline values calculated with a safety margin of 1.6
- under static load, based on the minimum yield point,
- under dynamic loads, based on the minimum fatigue strength.

Precision Locknut MSR - Inch

Type (d1 x thread) in Click Part # for CAD	Equivalent bearing nut	Dimensions in inches						Clamp Screws			Calculation factor A	Locknut- specific allowance B	Allowable axial load		Mass moment of inertia J
Type (d1 x thread) in Click Part # for CAD		d₂	d₃¹⁾	d₄	d₅¹⁾	l	h	Sizes	n	T_s	Calculation factor A	Locknut- specific allowance B	dyn.	stat.	Mass moment of inertia J
ANSF class 3		d₂	d₃¹⁾	d₄	d₅¹⁾	l	h	SHCS	Qty	in lbs	mm	N	kN	kN	kg cm²
MSR-17x32	N-03	1.38	.158	1.00	.169	.19	.70	M 4x12	4	25	1.092	3947	19	25	0.147
MSR-20x32	N-04	1.57	.158	1.12	.169	.19	.70	M 4x12	4	25	1.270	3900	22	29	0.283
MSR-25x32	N-05	1.77	.197	1.36	.169	.25	.78	M 4x12	4	25	1.524	3822	33	47	0.488
MSR-30x18	N-06	1.89	.197	1.52	.169	.25	.78	M 4x12	4	25	1.905	3744	38	57	0.588
MSR-35x18	N-07	2.09	.197	1.71	.169	.27	.86	M 4x16	4	25	2.210	3666	47	66	0.914
MSR-40x18	N-08	2.28	.197	1.91	.169	.27	.86	M 4x16	4	25	2.464	3588	49	66	1.254
MSR-45x18	N-09	2.68	.236	2.17	.169	.25	.86	M 4x16	6	25	2.769	5265	53	84	2.494
MSR-50x18	N-10	2.76	.236	2.30	.169	.35	.98	M 4x18	6	25	3.073	5148	71	94	2.909
MSR-55x18	N-11	2.95	.236	2.50	.169	.35	.98	M 4x18	6	25	3.353	5031	72	96	3.690
MSR-60x18	N-12	3.31	.236	2.78	.209	.35	1.02	M 5x18	6	40	3.632	8001	123	163	6.317
MSR-65x18	N-13	3.50	.236	2.97	.209	.41	1.10	M5x20	6	40	3.912	7811	134	177	7.708
MSR-70x18	N-14	3.74	.315	3.19	.209	.37	1.10	M5x20	6	40	4.217	7620	153	203	10.500
MSR-75x12	AN-15	3.94	.315	3.43	.252	.34	1.10	M 6x20	6	75	4.572	10530	121	160	12.346
MSR-80x12	AN-16	4.33	.315	3.62	.252	.43	1.26	M 6x22	6	75	4.877	10260	194	258	22.033
MSR-85x12	AN-17	4.53	.315	3.82	.252	.43	1.26	M 6x22	6	75	5.182	9990	198	262	25.660
MSR-90x12	AN-18	4.72	.315	4.06	.252	.43	1.26	M 6x22	6	75	5.436	9720	200	265	29.615
MSR-95x12	AN-19	4.92	.315	4.25	.252	.43	1.26	M 6x22	6	75	5.741	9450	203	268	34.017
MSR-100x12	AN-20	5.12	.315	4.45	.252	.43	1.26	M 6x22	6	75	6.020	9180	205	271	38.838
MSR-105x12	AN-21	5.31	.315	4.65	.252	.43	1.26	M 6x22	6	75	6.325	8910	207	274	44.097
MSR-110x12	AN-22	5.51	.315	4.84	.252	.43	1.26	M 6x22	6	75	6.604	8370	248	239	64.164
MSR-120x12	AN-24	6.10	.315	5.32	.252	.51	1.41	M 6x25	6	75	7.188	8100	308	408	89.668
MSR-130x12	AN-26	6.50	.315	5.71	.252	.51	1.41	M 6x25	6	75	7.772	7560	306	405	110.500
MSR-140x12	AN-28	7.09	.394	6.10	.252	.47	1.41	M 6x25	8	75	8.331	9360	359	476	160.977
MSR-150x12	AN-30	7.50	.394	6.50	.252	.47	1.41	M 6x25	8	75	8.915	8640	369	489	197.954
MSR-160x8	AN-32	8.07	.394	7.08	.331	.55	1.57	M 8x30	8	155	9.652	14520	417	552	301.314
MSR-170x8	AN-34	8.50	.394	7.40	.331	.55	1.57	M 8x30	8	155	10.185	13200	423	560	353.347
MSR-180x8	AN-36	9.06	.394	8.87	.331	.55	1.57	M 8x30	8	155	10.770	11880	489	648	477.504
MSR-190x8	AN-38	9.45	.394	8.27	.331	.55	1.57	M 8x30	8	155	11.405	10560	495	656	550.330
MSR-200x8	AN-40	9.65	.394	8.58	.331	.55	1.57	M 8x30	8	155	11.938	9240	436	578	544.727
AMERICAN STANDARD CLASS 3 FIT
MSR-0.675 x 18	-	1.38	.187	.96	.187	.19	.70	8-32 x .50	4	25	1.092	3962	19	25	0.147
MSR-0.750 x 16	-	1.56	.187	1.12	.187	.19	.70	8-32 x .50	4	25	1.295	3916	22	29	0.283
MSR-0.875 x 14	-	1.56	.187	1.20	.187	.19	.70	8-32 x .50	4	25	1.524	3869	23	32	0.270
MSR-1 x 12	-	1.75	.187	1.36	.187	.25	.78	8-32 x .50	4	25	1.702	3822	33	47	0.488
MSR-1.125 x 12	-	1.88	.187	1.44	.187	.25	.78	8-32 x .50	4	25	1.905	3775	36	53	0.504
MSR-1.250 x 12	-	2.00	.201	1.60	.187	.27	.86	8-32 x .50	4	25	2.108	3713	44	64	0.743
MSR-1.375 x 12	-	2.12	.201	1.71	.187	.27	.86	8-32 x .63	4	25	2.286	3666	47	66	0.914
MSR-1.500 x 12	-	2.25	.201	1.83	.187	.27	.86	8-32 x .63	4	25	2.464	3620	50	75	1.337
MSR-1.675 x 12	-	2.38	.201	1.98	.187	.27	.86	8-32 x .63	4	25	2.642	3572	49	66	1.254
MSR-1.750 x 12	-	2.69	.201	2.17	.187	.25	.86	8-32 x .63	6	25	2.820	5265	53	84	2.494
MSR-1.875 x 12	-	2.69	.250	2.23	.187	.26	.86	8-32 x .63	6	25	3.023	5195	70	94	2.631
MSR-2 x 12	-	2.75	.250	2.34	.187	.35	.98	8-32 x .75	6	25	3.200	5125	72	96	2.909
MSR-2.250 x 12	-	3.00	.250	2.58	.187	.35	.98	8-32 x.75	6	25	3.581	8077	122	161	5.811
MSR-2.500 x 12	-	3.50	.328	2.94	.219	.38	1.10	10-32 x.75	6	40	3.937	7849	135	175	7.331
MSR-2.750 x 12	-	3.75	.328	3.19	.219	.37	1.10	10-32 x.75	6	40	4.318	7620	153	203	10.500
MSR-3 x 12	-	4.00	.328	3.49	.281	.33	1.10	1/4-20 x.75	6	75	4.674	10476	136	180	12.346

Note:
1) In same quantity as clamp screws.

Metric Specs & CAD

MSR Series - Metric

Special versions and spanner wrenches available on request.

Special Locknuts with American Standard Threads are made to your specifications.

Precision Locknut MSR - Metric

MSR (d1 x pitch)	Dimensions in mm								Clamping Screws			Calculation factor A	Locknut-specific allowance B	Allowable axial load		Mass moment of inertia J
Click Part # for CAD	d₂	d₃¹⁾	d4	d₅¹⁾	d₆	h	l	e	Sizes	n	T_s	Calculation factor A	Locknut-specific allowance B	dyn.	stat.	Mass moment of inertia J
ANSF class 3	h11	d₃¹⁾	d4	d₅¹⁾	h 11	h	l	e	SHCS	Qty	Nm	mm	N	kN	kN	kg cm²
MSR 10 x 0.75	24	2.5	17	3.2	22	14	3	6.5	M 3x10	3	2	0.672	2457	12	16	0.025
MSR 10 x 1	24	2.5	17	3.2	22	15	3	6.5	M 3x10	3	2	0.703	2457	12	15	0.027
MSR 12 x 1	26	3	19	3.2	25	14	3	6.5	M 3x10	3	2	0.819	2438	14	19	0.037
MSR 12 x 1.5	26	3	19	3.2	25	15	3	6.5	M 3x10	3	2	0.881	2438	13	18	0.040
MSR 14 x 1.5	32	4	22.5	4.3	30	16	3	7	M 4x10	3	2.9	0.997	2995	17	22	0.096
MSR 15 x 1	33	4	23.5	4.3	31	16	3	7	M 4x10	3	2.9	0.992	2984	19	25	0.108
MSR 16 x 1.5	34	4	24.5	4.3	-	18	5	-	M 4x12	4	2.9	1.112	3962	17	22	0.147
MSR 17 x 1	35	4	25.5	4.3	-	18	5	-	M 4x12	4	2.9	1.108	3947	19	25	0.164
MSR 18 x 1.5	36	4	26.5	4.3	-	18	5	-	M 4x12	4	2.9	1.228	3931	19	25	0.183
MSR 20 x 1	40	4	30.5	4.3	-	18	5	-	M 4x12	4	2.9	1.281	3900	22	29	0.283
MSR 20 x 1.5	40	4	30.5	4.3	-	18	5	-	M 4x12	4	2.9	1.344	3900	18	28	0.283
MSR 22 x 1.5	40	4	30.5	4.3	-	18	5	-	M 4x12	4	2.9	1.459	3869	23	32	0.270
MSR 24 x 1.5	42	4	32.5	4.3	-	18	5	-	M 4x12	4	2.9	1.575	3838	25	35	0.323
MSR 25 x 1.5	45	5	36.5	4.3	-	20	6.5	-	M 4x12	4	2.9	1.633	3822	33	47	0.488
MSR 26 x 1.5	45	5	36.5	4.3	-	20	6.5	-	M 4x12	4	2.9	1.690	3806	34	49	0.479
MSR 28 x 1.5	46	5	38.5	4.3	-	20	6.5	-	M 4x12	4	2.9	1.805	3775	36	53	0.504
MSR 30 x 1.5	48	5	40.5	4.3	-	20	6.5	-	M 4x12	4	2.9	1.921	3744	38	57	0.588
MSR 32 x 1.5	50	5	42.5	4.3	-	22	7	-	M 4x16	4	2.9	2.037	3713	44	64	0.743
MSR 35 x 1.5	53	5	45.5	4.3	-	22	7	-	M 4x16	4	2.9	2.210	3666	47	66	0.914
MSR 38 x 1.5	58	5	48.5	4.3	-	22	7	-	M 4x16	4	2.9	2.449	3619	50	75	1.337
MSR 40 x 1.5	58	5	50.5	4.3	-	22	7	-	M 4x16	4	2.9	2.500	3588	49	66	1.254
MSR 42 x 1.5	60	5	52.5	4.3	-	22	7	-	M 4x16	4	2.9	2.617	3557	49	66	1.412
MSR 45 x 1.5	68	6	58	4.3	-	22	6.5	-	M 4x16	6	2.9	2.789	5265	53	84	2.494
MSR 48 x 1.5	68	6	59.5	4.3	-	25	9	-	M 4x18	6	2.9	2.962	5195	70	94	2.631
MSR 50 x 1.5	70	6	61.5	4.3	-	25	9	-	M 4x18	6	2.9	3.079	5148	71	94	2.909
MSR 52 x 1.5	72	6	63.5	4.3	-	25	9	-	M 4x18	6	2.9	3.196	5101	72	96	3.207
MSR 55 x 1.5	75	6	66.5	4.3	-	25	9	-	M 4x18	6	2.9	3.369	5031	72	96	3.690
MSR 58 x 1.5	82	6	72.5	5.3	-	26	9	-	M 5x18	6	6	3.541	8077	122	161	5.811
MSR 60 x 1.5	84	6	74.5	5.3	-	26	9	-	M 5x18	6	6	3.655	8001	123	163	6.317
MSR 62 x 1.5	86	6	76.5	5.3	-	28	10.5	-	M 5x20	6	6	3.774	7925	141	186	7.331
MSR 65 x 1.5	88	6	78.5	5.3	-	28	10.5	-	M 5x20	6	6	3.948	7811	134	177	7.708
MSR 68 x 1.5	95	8	83	5.3	-	28	9.5	-	M 5x20	6	6	4.121	7696	168	223	11.048
MSR 70 x 1.5	95	8	85	5.3	-	28	9.5	-	M 5x20	6	6	4.238	7620	153	203	10.500
MSR 72 x 1.5	98	8	86	6.4	-	28	8.5	-	M 6x20	6	10	4.354	10692	128	170	11.822
MSR 75 x 1.5	100	8	88	6.4	-	28	8.5	-	M 6x20	6	10	4.525	10530	121	160	12.346
MSR 80 x 2	110	8	95	6.4	-	32	11	-	M 6x22	6	10	4.873	10260	194	258	22.033
MSR 85 x 2	115	8	100	6.4	-	32	11	-	M 6x22	6	10	5.168	9990	198	262	25.660
MSR 90 x 2	120	8	108	6.4	-	32	11	-	M 6x22	6	10	5.453	9720	200	265	29.615
MSR 95 x 2	125	8	113	6.4	-	32	11	-	M 6x22	6	10	5.744	9450	203	268	34.017
MSR 100 x 2	130	8	118	6.4	-	32	11	-	M 6x22	6	10	6.033	9180	205	271	38..838
MSR 105 x 2	135	8	123	6.4	-	32	11	-	M 6x22	6	10	6.321	8910	207	274	44.097
MSR 110 x 2	140	8	128	6.4	-	32	11	-	M 6x22	6	10	6.616	8640	212	280	49.814
MSR 115 x 2	145	8	133	6.4	-	36	13	-	M 6x25	6	10	6.900	8370	248	329	64.164
MSR 120 x 2	155	8	140	6.4	-	36	13	-	M 6x25	6	10	7.193	8100	308	408	89.668
MSR 125 x 2	160	8	148	6.4	-	36	13	-	M 6x25	6	10	7.474	7830	311	412	99.722
MSR 130 x 3	165	8	153	6.4	-	36	13	-	M 6x25	6	10	7.895	7560	306	405	110.500
MSR 140 x 3	180	10	165	6.4	-	36	12	-	M 6x25	8	10	8.475	9360	359	476	160.977
MSR 150 x 3	190	10	175	6.4	-	36	12	-	M 6x25	8	10	9.050	8640	369	489	192.954
MSR 160 x 3	205	10	185	8.4	-	40	14	-	M 8x30	8	25	9.633	14520	417	552	301.314
MSR 170 x 3	215	10	195	8.4	-	40	14	-	M 8x30	8	25	10.213	13200	423	560	353.347
MSR 180 x 3	230	10	210	8.4	-	40	14	-	M 8x30	8	25	10.789	11880	489	648	477.504
MSR 190 x 3	240	10	224	8.4	-	40	14	-	M 8x30	8	25	11.362	10560	495	656	550.330
MSR 200 x 3	245	10	229	8.4	-	40	14	-	M 8x30	8	25	11.948	9240	436	578	544.727

Note:
1) In same quantity as clamp screws.

Catalog

SPIETH Precision Locknuts MSR/MSA

> PDF Catalog 209K

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Advanced Machine and Engineering Co

Locknut MSR

Precision Components

Standard Precision Locknut

Inch and metric available

Inch Specs & CAD

MSR Series - Inch

Metric Specs & CAD

MSR Series - Metric

Catalog

Contact

Price, Delivery & Technical Questions

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