Tri-Lock Nut, Galvanized
Tri-Lock Nut, Galvanized
Manufacturers:
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.
Products
Governing Standards
| 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. |
Grade A requires no material marking
Dimensional Specifications
| 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.