ASME/ANSI B18.2.2 (T5):2010 Slotted Hex Nut is used in inch-thread systems where mechanical retention is required. The slotted top can be paired with cotter pins, drilled bolts, or shaft-end features to create a visible and reliable anti-loosening arrangement.
This product is suitable for vehicles, mechanical transmissions, agricultural equipment, wheel and axle assemblies, and maintenance spare parts. For points requiring periodic inspection or safety retention, the slotted design makes it easy to verify the locked condition through the pin.
It can be supplied according to inch size, material grade, and surface finish requirements to match ASME-standard fastening systems and different service environments.

Unit:inch
|
Nominal diameter d |
s |
k |
n |
w |
||||||
|
max |
min |
max |
min |
max |
min |
max |
min |
|||
|
1/4 |
0.438 |
0.428 |
0.226 |
0.212 |
0.10 |
0.07 |
0.14 |
0.12 |
||
|
5/16 |
0.500 |
0.489 |
0.273 |
0.258 |
0.12 |
0.09 |
0.18 |
0.16 |
||
|
3/8 |
0.562 |
0.551 |
0.337 |
0.32 |
0.15 |
0.12 |
0.21 |
0.19 |
||
|
7/16 |
0.688 |
0.675 |
0.385 |
0.365 |
0.15 |
0.12 |
0.23 |
0.21 |
||
|
1/2 |
0.750 |
0.736 |
0.448 |
0.427 |
0.18 |
0.15 |
0.29 |
0.27 |
||
|
9/16 |
0.875 |
0.861 |
0.496 |
0.473 |
0.18 |
0.15 |
0.31 |
0.29 |
||
|
5/8 |
0.938 |
0.922 |
0.559 |
0.535 |
0.24 |
0.18 |
0.34 |
0.32 |
||
|
3/4 |
1.125 |
1.088 |
0.665 |
0.617 |
0.24 |
0.18 |
0.4 |
0.38 |
||
|
7/8 |
1.312 |
1.269 |
0.776 |
0.724 |
0.24 |
0.18 |
0.52 |
0.49 |
||
|
1 |
1.500 |
1.450 |
0.887 |
0.831 |
0.30 |
0.24 |
0.59 |
0.56 |
||
|
1-1/8 |
1.688 |
1.631 |
0.999 |
0.939 |
0.33 |
0.24 |
0.64 |
0.61 |
||
|
1-1/4 |
1.875 |
1.812 |
1.094 |
1.03 |
0.40 |
0.31 |
0.7 |
0.67 |
||
|
1-3/8 |
2.062 |
1.994 |
1.206 |
1.138 |
0.40 |
0.31 |
0.82 |
0.78 |
||
|
1-1/2 |
2.250 |
2.175 |
1.317 |
1.245 |
0.46 |
0.37 |
0.86 |
0.82 |
||
ABOUT US
Better Fastener is a professional fastener enterprise specializing in the manufacturing of steel washers, stainless steel washers, spring washers and sealingwashers. Founded in 2001 as a washer factory, the company expanded into a comprehensive enterprise integrating washers, nuts, bolts, spring nuts and other fastener products in 2010.
The company positions itself as a provider of comprehensive one-stop services for customers, relying on technological R&D, industrial investment and trade distribution.
With an experienced professional team and a sound sales network, Better Fastener has achieved excellent sales performance in both domestic and foreign markets,and has grown into one of the competitive manufacturers and suppliers in China's industrial fastener industry.
Better Fastener is committed to becoming a trusted fastener supplier for customers with reliable product quality, reasonable prices and on-time delivery
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