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Slotted Hex Castle Lock Nuts
Hex Slotted Castle Nut image Here is where Smitty will pop up checking to see if we are giving you the most curent specifications. Hex Slotted Castle Nut image
Hex Castle Nuts - ANSI B18.2.2 - 1970
Nominal Size or
Basic Major
Thread Diameter		 F G H T S R W Runout
of
Bearing
Surface
FIR
Width
Across Flats		 Width
Across
Corners		 Thickness Unslotted
Thickness and
Flat Height		 Slot
Width		 Fillet
Radius		 Cylinder
Diameter
Basic Max Min Max Min Basic Max Min Nom Max Min Max Min +.010 Min Max
1/4 .250 7/16 .438 .428 .505 .488 9/32 .288 .274 3/16 .20 .18 .10 .07 .094 .371 .015
5/16 .3125 1/2 .500 .489 .577 .557 21/64 .336 .320 15/64 .24 .22 .12 .09 .064 .425 .016
3/8 .3750 9/16 .562 .551 .650 .628 13/32 .415 .398 9/32 .29 .27 .15 .12 .094 .478 .017
7/16 .4375 11/16 .688 .675 .794 .768 29/64 .463 .444 19/64 .31 .29 .15 .12 .094 .582 .018
1/2 .5000 3/4 .750 .736 .866 .840 9/16 .573 .552 13/32 .42 .40 .18 .15 .125 .637 .019
9/16 .5625 7/8 .875 .861 1.010 .982 39/64 .621 .598 27/64 .43 .41 .18 .15 .156 .744 .020
5/8 .6250 15/16 .938 .922 1.083 1.051 23/32 .731 .706 1/2 .51 .49 .24 .18 .156 .797 .021
3/4 .7500 1-1/8 1.125 1.088 1.299 1.240 13/16 .827 .798 9/16 .57 .55 .24 .18 .188 .941 .023
7/8 .8750 1-5/16 1.312 1.269 1.516 1.447 29/32 .922 .890 21/32 .67 .64 .24 .18 .188 1.097 .025
1 1.0000 1-1/2 1.500 1.450 1.732 1.653 1 1.018 .982 23/32 .73 .70 .30 .24 .188 1.254 .027


Slotted Hex Castle Nut Lock Nuts Properties - ANSI B18.2.2 - 1970
Description A hex nut with opposed slots cut into the top, cylindrical portion, of the nut. The slots are on the end opposite the bearing surface and are equal in depth to the cylindrical length. The cylindrical portion diameter is slightly smaller than the hex width.
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. Castle nuts are interchangeable with hex slotted nuts.
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
Plating See plating page for more information.

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See also:
Hex Slotted Nuts

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

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Smith Fastener Company, A California Corporation - 3613 East Florence Avenue, Bell, California, 90201 - Phone: ( 323 ) 587-0382 - FAX: ( 323 ) 587-8712 - E-mail: sales@smithfast.com - Copyright © 2000 by Smith Fastener Company - Last updated: May 22nd, 2006 - http://www.smithfast.com/castlenuts.htm