Nylon Insert Stop Nuts, Light Hex, Grade 8

Lock Nut image


Nominal Size or
Basic Major
Thread Diameter
F H I G
Width
Across Flats
Thickness Side
Height
Width
Across Corners
Max Min Max Min Ref Ref
1/4 .2500 .439 .430 .328 .298 .225 .482
5/16 .3125 .502 .492 .359 .329 .250 .552
3/8 .3750 .564 .553 .468 .438 .335 .622
7/16 .4375 .627 .616 .468 .438 .324 .694
1/2 .5000 .752 .741 .609 .579 .464 .837
9/16 .5625 .877 .865 .656 .626 .469 .978
5/8 .6250 .940 .928 .765 .735 .593 1.051
3/4 .7500 1.064 1.052 .890 .860 .742 1.191
7/8 .8750 1.252 1.239 .999 .969 .790 1.403
1 1.0000 1.440 1.427 1.078 1.016 .825 1.615
1-1/8 1.1250 1.627 1.614 1.203 1.141 .930 1.826
1-1/4 1.2500 1.814 1.801 1.422 1.360 1.125 2.038
1-3/8 1.3750 2.008 1.973 1.609 1.547 1.282 2.232
1-1/2 1.500 2.197 2.159 1.640 1.578 1.313 2.416


Grade 8 Properties

Description A heat treated hex nut with a nylon filled collar at its back end. The nut shall be grade-marked in one of two ways: 1) With double notched corners, or 2) With six symmetrically spaced identical symbols on the chamfered surface on top of the nut.
When the capscrew or bolt reaches the collar, the threads and nylon form a tight frictional fit, restricting movement of the capscrew or bolt when it is subjected to vibration. The nylon insert comes in various colors.
Applications
& Advantages
Designed for use in structural applications with Grade-8 cap-screws or bolts which have a minimum tensile strength of 150,000 psi or greater. Some applications include engines, turbines, hydraulic cylinders, railroad and aerospace. Nylon insert nuts are not designed to be used at temperatures over 250°F..
Material Heat treated AISI C1137 or equivalent steel
Hardness Rockwell C26 - 34
Proof Load 150,000 psi
Plating Usually supplied zinc yellow-plated.
See plating page for more information.

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See also:
Nylon Insert Nuts
Light Hex
Std Pattern
Nylon Insert Nuts
Light Hex
Thin Pattern
Nylon Insert Nuts
Heavy Hex
Nylon Insert Nuts
Heavy Hex
Thin Pattern




Smith Fastener Company • 8181 State Street, South Gate, California 90280
Phone: ( 323 ) 587-0382 • FAX: ( 323 ) 587-8712 • E-mail: sales@smithfast.com
Copyright © 2009 by Smith Fastener Company

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