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Palnut® Single-Thread U-Nuts

The Dimensions of the following parts are envelope dimensions only. For complete design information, please request a blueprint from your Tinnerman Palnut representative or the Tinnerman Palnut Engineering Department.

Part Number	Thread No.	A Length	B Throat	C Nut Width	D Leg Width	H Height	P Diameter	Q Distance To Edge	T Panel Range
US818249	8-18	.775-.755	.390-.350	.551-.520	.079	.195-.165	.315	.315	.075-.025
US818035	8-18	.775-.755	.390-.350	.551-.520	.079	.195-.165	.315	.340	.150-.070
US420519	8-18	.783-.763	.360-.340	.551-.520	.079	.189-.150	.275	.340	.150-.026
US420619	8-18	.783-.736	.360-.340	.551-.520	.079	.280-.260	.270	.319	.250-.126
US420419	8-18	.783-.736	.360-.340	.551-.520	.079	.189-.150	.275	.340	.150-.026
US420020	8-18	.785-.755	.365-.335	.551-.520	.079	.180-.160	.220	.300	.150-.060
UG630019	1/4-14	.783-.736	.360-.340	.650-.618	.079	.189-.150	.373	.339	.150-.026
US254020	1/4-14	.785-.755	.365-.335	.650-.620	.079	.280-.260	.280	.319	.250-.126

Performance Requirements

Thread Size	Performance Requirements Recommended Installation Torque	Minimum Clamp Load at Recommended Installation Torque
Inch	Max. Inch Pounds	Min. Pounds
8-18	19.5	400.2
1/4-14	62	750.9

Palnut® Multi-Thread U-Nuts

Palnut® Single & Multi-Thread U-Nuts

Part Number	ScrewSize	A	B	C	D	E	F	G	Panel Hole Dia. +/- .015	Panel Thickness Range
LUGS142059	1/4-20	.920	.540	.560	.500	.240	.035	.180	.375	.025-.150
LUGS561863	5/16-18	.980	.570	.670	.560	.315	.040	.180	.437	.025-.150
LUGS565763	5/16-18	.980	.570	.670	.560	.315	.040	.220	.437	.050-.200
LUGS381683	3/18-16	1.290	.730	.930	.700	.370	.050	.230	.562	.050-.200