Palnut® Regular Type Lock Nuts

Palnut® Regular Type Lock Nuts

Palnut® Lock Nuts incorporate a design principle that has stood the test of over 60 years. These nuts may be used alone for load-carrying in lightduty assemblies or they may be used on top of ordinary nuts to assure tightness of high-stress assemblies. They offer impressive savings over alternative fasteners in initial cost, assembly time, weight and space. They are removable, reusable, and self-cleaning. They are unaffected by temperatures up to 400 degrees.

The Dimensions of the following parts are envelope dimensions only. For complete design information, please contact us.

Part Number	Thread No.	Hex Width W (In.)	Height H (In.)	Max. Across Corners A (In.)	Notch Design	Recommended Torque (In. Lbs.)	Avg. Resulting Tension (Lbs.)	Weight Lbs./M Pieces
RM440003	4-40	3/16	.068	.217	1	3	60	0.2
RM440	4-40	1/4	.076	.289	1	5	80	0.3
RM540004	5-40	1/14	.080	.289	1	5	120	0.3
RM632004	6-32	1/14	.080	.289	1	7	130	0.3
RM632	6-32	5/16	.092	.361	2	9	130	0.6
RM832	8-32	11/32	.099	.397	2	11	150	0.7
RM103205	10-32	5/16	.094	.361	2	12	150	0.5
RM1032	10-32	3/8	.105	.433	2	15	150	0.8
RM1024	10-24	3/8	.105	.433	2	18	210	0.9
RP1827	1/8-27NPS	9/16	.114	.650	3	60	350	1.8
RE1432	1/4-32	7/16	.118	.505	3	17	200	1.1
RF1428	1/4-28	7/16	.118	.505	3	30	250	1.2
RF1420	1/4-20	7/16	.123	.505	3	38	350	1.5
RH1420	1/4-20	1/2	.134	.578	3	38	400	2.3
RP1418	1/4-18NPS	3/4	.130	.866	3	140	600	3.9
RF51624	5/16-24	1/2	.129	.578	4	45	320	1.9
RF51618	5/16-18	1/2	.134	.578	3	52	450	2.0
RE3832	3/8-32	9/16	.094	.650	4	30	200	1.3
RE3827	3/8-27	9/16	.094	.650	4	35	200	1.4
RF3824	3/8-24	9/16	.140	.650	4	65	420	2.1
RP3818	3/8-18NPS	15/16	.145	1.083	3	205	660	6.5
RF3816	3/8-16	9/16	.145	.650	3	70	500	2.3
RR3816	3/8-16	5/8	.156	.722	3	85	720	3.7
RE71628	7/16-28	5/8	.111	.722	4	25	340	1.9
RL71620	7/16-20	5/8	.150	.722	4	85	700	2.8
RH71614	7/16-14	3/4	.168	.866	3	180	900	6.1
RE153232	15/32-32	5/8	.090	.722	4	40	200	1.3
RF1220	1/2-20	3/4	.172	.866	4	130	750	4.3
RF1213	1/2-13	3/4	.179	.866	3	145	900	5.5
RF91618	9/16-18	7/8	.193	1.010	4	180	900	6.7
RE5832	5/8-32-	3/4	.094	.866	4	65	280	1.5
RF5818	5/8-18	15/16	.203	1.083	4	200	1000	7.2
RF5811	5/8-11	15/16	.213	1.083	3	330	1150	10.4
RR5811	5/8-11	1	.224	1.155	3	370	1500	12.3
RN5811	5/8-11	1	.238	1.131	1	400	2000	13.5
RZ5811	5/8-11	1	.201	1.131	1	400	2000	12.0
RZ213300	5/8-11 Left Hand	1	.180	1.131	1	--	--	--
RZ001895	3/4-20	1-1/16	.100	1.227	4	--	--	4.1
RZ001464	3/4-20	1-1/16	.203	1.227	4	--	--	6.3
RL3416	3/4-16	1-1/16	.225	1.227	4	350	1150	10.0
RF3410	3/4-10	1-1/8	.246	1.299	3	530	1650	14.0
RZ3410	3/4-10	1-1/8	.247	1.299	1	570	2200	15.2
RH3410	3/4-10	1-1/4	.269	1.443	3	640	1650	22.0
RZ001465	7/8-20	1-1/8	.142	1.299	1	--	--	5.3
RL7814	7/8-14	1-1/4	.256	1.443	4	500	1400	15.7
RH18	1-8	1-5/8	.336	1.877	3	--	--	47.4

Torque and tension values are not shown for some of the large size parts above. These sizes are primarily used as lock nuts on top of ordinary nuts, or as load carrying nuts on applications where joint loading is mainly in shear. In both situations the tensile (clamping) strength of the Palnut® Lock Nut exceeds most conservative design requirements, and tightening is usually done manually.