ASME B18.16.6 Nylon Insert Lock Nut

ASME B18.16.6 Nylon Insert Lock Nut covers inch-series nylon insert locknuts with comprehensive dimensional and performance requirements. The standard includes standard hex, thin hex, and hex flange configurations, with performance grades N2, N5, and N8 for various strength applications.

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Product introduction

Common Specifications

Materials	Carbon steel
Class	N2, N5, N8
Range	#2 - 3″
Thread	UNC, UNF
Surface	Plain, zinc plated, hot-dip galvanized, GEOMET, ZINC-NICKLE, DACROMATE etc.

Key Features

Nylon insert provides prevailing torque locking
Multiple styles: standard, thin, and flange
Performance grades N2, N5, N8 for strength levels
Proof load requirements per standard
Inch thread series (UNC/UNF)

Application industry

North American automotive manufacturing
Heavy equipment assembly
Aerospace ground support
Industrial machinery with vibration

data table

product-904-218

Size	1/4	5/16	3/8	7/16	1/2	9/16	5/8	3/4	7/8	1	1-1/8	1-1/4	1-3/8	1-1/2
UNC	20	18	16	14	13	12	11	10	9	8	7	7	6	6
s Min (inch)	0.430	0.489	0.551	0.616	0.736	0.861	0.922	1.052	1.239	1.427	1.614	1.801	1.973	2.159
s Max (inch)	0.439	0.502	0.564	0.627	0.752	0.877	0.940	1.064	1.252	1.440	1.627	1.815	2.008	2.197
e Min (inch)	0.482	0.552	0.622	0.698	0.837	0.978	1.051	1.191	1.403	1.615	1.826	2.038	2.232	2.444
m Min (inch)	0.298	0.329	0.438	0.438	0.579	0.626	0.735	0.860	0.969	1.016	1.141	1.360	1.547	1.578
m Max (inch)	0.328	0.359	0.468	0.468	0.609	0.656	0.765	0.890	0.999	1.078	1.203	1.422	1.609	1.640

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