3/8-24 J995 GR 5 Hex Castle Nut Zinc Clear Trivalent


  • WEIGHT: 0.0170 lbs.
  • DIAM: 0.3750 (3/8)
  • GRADE: GR 5
  • FINISH: Zinc Clear Trivalent
  • THREAD: 24

$1.06 /pc


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Hex Castle Nut

Castle nuts are used in a variety of applications, from rotary to bearings and bushings to trucks and off-road vehicles. The top of a castle nut is rounded to accommodate the legs of a cotter pin, and because these nuts are a tad taller, you get added strength and resistance to rounding of hex corners. Big Bolts’ hex castle nuts start at 1” diameter and go all the way to 2”. We stock them in strength levels of grades 2 and 5, and have plenty of finishes as well, like zinc yellow and zinc clear. Log-in here to place your order.

Descriptions: Castle Nut, Hex Castle Nut.
Applications: Used with cotter pins for locking nuts into position on shafts and spindles. Taller nut adds strength and resists rounding of hex corners. Top of nut is rounded to accommodate legs of cotter pin.
Specifications: Dimensions per ASME B18.2.2 (rev 1965).
Physical properties per SAE J995 Grade 5 or Grade 2.
Available in Fine (UNF) threads.

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Chances are, as you're reading this, there is some dirt under your fingernails and perhaps scabs on your knuckles. You are the bold one who doesn't shy away from removing a few bolts and nuts to see what's going on. You're reading this because you want to make sure you are dealing with a company that you can rely on to supply the right parts when you need them. And, whatever big project you are working on now, is a stepping stone for a bigger one. If that assessment feels right, go ahead and let us know.


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