Tri-Lock Nut, Galvanized

Tri Lock style lock nuts are all metal prevailing torque lock nuts with a conical top and a flat bottom bearing surface with chamfered corners. The thread distortion on the top thread of the nut makes it frictionally resistant to rotation. Dimensional specifications are governed by ASME B18.2.2. Available in galvanized finish for corrosion resistance.

Technical Data

Governing StandardsGrade A

ASME B18.2.2	Covers the complete general and dimensional data for the various types of inch series square and hex nuts, including machine screw nuts and coupling nuts.
ASME B1.1 UNC & UNF Class 2B	Specifies the thread form, series, class, allowance, tolerance, and designation for unified screw threads.

Tri-Lock Head Marking
Grade A requires no material marking

Dimensional SpecificationsGrade A

Per ASME B18.2.2-2015
Nominal Diameter		UNC	UNF	F			G		H
				Width Across Flats			Width Across Corners		Thickness
				Basic	Max	Min	Max	Min	Basic	Max	Min
1/4	0.2500	20	28	7/16	0.4380	0.4280	0.5050	0.4880	7/32	0.2260	0.2120
5/16	0.3125	18	24	1/2	0.5000	0.4890	0.5770	0.5570	17/64	0.2730	0.2580
3/8	0.3750	16	24	9/16	0.563	0.551	0.65	0.628	21/64	0.3370	0.3200
7/16	0.4375	14	20	11/16	0.6880	0.6750	0.7940	0.7680	3/8	0.3850	0.3650
1/2	0.5000	13	20	3/4	0.7500	0.7300	0.8660	0.8400	7/16	0.4480	0.4270
9/16	0.5625	12	18	7/8	0.8750	0.8610	1.0100	0.9820	31/64	0.4960	0.4730
5/8	0.6250	11	18	15/16	0.9380	0.9220	1.0830	1.0510	35/64	0.5590	0.5350
3/4	0.7500	10	16	1 1/8	1.1250	1.0880	1.2990	1.2400	41/64	0.6650	0.6170
7/8	0.8750	9	14	1 5/16	1.3120	1.2690	1.5160	1.4470	3/4	0.7760	0.7240
1	1.0000	8	14	1 1/2	1.5000	1.4500	1.7320	1.6530	55/64	0.8870	0.8310
1 1/8	1.1250	7	12	1 11/16	1.6880	1.6310	1.9490	1.8590	31/32	0.9990	0.9390
1 1/4	1.2500	7	12	1 7/8	1.8750	1.8120	2.1650	2.0660	1 1/16	1.0940	1.0300
1 3/8	1.3750	6	12	2 1/16	2.0620	1.9940	2.3820	2.2730	1 11/16	1.2060	1.3800
1 1/2	1.5000	6	12	2 1/4	2.2500	2.1750	2.5980	2.4800	1 9/32	1.3170	1.2450
1 5/8	1.6250	5.5	12	2 7/16	2.4300	2.3500	2.8050	2.6790	1 25/64	1.4160	1.3640
1 3/4	1.7500	5	12	2 5/8	2.6250	2.5380	3.0310	2.8930	1 1/2	1.5400	1.4600
1 7/8	1.8750	5	12	2 9/16	2.8130	2.7220	3.2470	3.1030	1 5/8	1.6510	1.5670
2	2.0000	4.5	12	3	3.0000	2.9000	3.4640	3.3060	1 23/32	1.7630	1.6750

All dimensions are in inches.

Tri-Lock Nut, Galvanized

of 1

Sort By

View

Diameter	Thread Pitch	Width Across Flats	Height of Nut	Item #	Availability	Price	Quantity
1/4	20	7/16	0.2188	NTLG0250000	In Stock	$0.0843/EA	EA	EA
5/16	18	1/2	0.2656	NTLG0310000	In Stock	$0.11774/EA	EA	EA
3/8	16	9/16	0.3281	NTLG0370000	In Stock	$0.23042/EA	EA	EA
7/16	14	11/16	0.3750	NTLG0430000	3-5 Working Days	$0.53786/EA	EA	EA
1/2	13	3/4	0.4375	NTLG0500000	In Stock	$0.3571/EA	EA	EA
5/8	11	15/16	0.5469	NTLG0620000	In Stock	$0.8441/EA	EA	EA
3/4	10	1 1/8	0.6406	NTLG0750000	In Stock	$1.29184/EA	EA	EA
7/8	9	1 5/16	0.75	NTLG0870000	In Stock	$2.76513/EA	EA	EA

Tri-Lock Nut, Galvanized

Technical Data

Tab 1

Governing StandardsGrade A

Tab 4

Dimensional SpecificationsGrade A

Product Specification

Grade

Diameter

Thread Pitch

Width Across Flats