Slotted Hex Lock Nuts

Hex Slotted Nut image

Hex Slotted Nuts - ANSI / ASME B18.2.2

Nominal Size or
Basic Major
Thread Diameter
F G H T S Runout
of
Bearing
Surface
FIM
Width
Across Flats
Width
Across
Corners
Thickness Unslotted
Thickness
Slot
Width
Basic Max Min Max Min Basic Max Min Max Min Max Min Max
1/4 .250 7/16 .438 .428 .505 .488 7/32 .226 .212 .14 .12 .10 .07 .015
5/16 .3125 1/2 .500 .489 .577 .557 17/64 .273 .258 .18 .16 .12 .09 .016
3/8 .3750 9/16 .562 .551 .650 .628 21/64 .337 .320 .21 .19 .15 .12 .018
7/16 .4375 11/16 .688 .675 .794 .768 3/8 .385 .365 .23 .21 .15 .12 .018
1/2 .5000 3/4 .750 .736 .866 .840 7/16 .448 .427 .29 .27 .18 .15 .019
9/16 .5625 7/8 .875 .861 1.010 .982 31/64 .496 .473 .31 .29 .18 .15 .020
5/8 .6250 15/16 .938 .922 1.083 1.051 35/64 .559 .535 .34 .32 .24 .18 .021
3/4 .7500 1-1/8 1.125 1.088 1.299 1.240 41/64 .665 .617 .40 .38 .24 .18 .023
7/8 .8750 1-5/16 1.312 1.269 1.516 1.447 3/4 .776 .724 .52 .49 .24 .18 .025
1 1.0000 1-1/2 1.500 1.450 1.732 1.653 55/64 .887 .831 .59 .56 .30 .24 .027
1-1/8 1.1250 1-11/16 1.688 1.631 1.949 1.859 31/32 .999 .939 .64 .61 .33 .24 .030
1-1/4 1.2500 1-7/8 1.875 1.812 2.165 2.066 1-1/16 1.094 1.030 .70 .67 .40 .31 .033
1-1/2 1.5000 2-1/4 2.250 2.175 2.598 2.480 1-9/32 1.317 1.245 .86 .82 .46 .37 .039


Slotted Hex Nut Lock Nuts Properties - ANSI / ASME B18.2.2

Description A hex nut with opposed slots cut into the top of the nut through the centers of the flats. The slots are on the end opposite the bearing surface.
Applications
& Advantages
The slots are for the insertion of a cotter pin to secure the nut when used with a drilled shank fastener. Commonly used in the automotive industry to secure front wheel bearings / wheel hubs to spindles on cars and trucks.
Material Nuts shall be made from a low carbon steel which conforms to the following chemical composition requirements:
Carbon:  .47% max   Phosphorus:  .12% max   Sulfur:  .23% max
Hardness Rockwell C32 maximum
Proof Load 72,000 psi
Plating See plating page for more information.


See also:
Hex Castle Nuts

For a more comprehensive list of lock nuts check out our Nuts List


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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