5/16-24 Castellated Nuts

Hex Castle Nuts or Castellated Nuts have notches on one end, which resemble the serrated tops of castle parapets. These nuts are used with a bolt with cross-drilled holes, so that a cotter pin can pass through the nut and into a hole in a bolt shank, thus preventing the nut from loosening. The notched end is turned down slightly, allowing the cotter pin to be bent around the nut. Often used in machinery, shafts and automotive applications.

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Search Results Sponsored by Perigee Manufacturing, your source for Castellated Nuts. For more results, visit   perigeemfg.com
SupplierLocTypeMaterialFinishSizeDescriptionQty 
PerigeeMICastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Cadmium/Yellow5/16-24hex castellated airframe nut an310c5 b18.2.21095
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PerigeeMICastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Cadmium/Yellow5/16-24hex castellated airframe nut an310c5 b18.2.24863
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PerigeeMICastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-24hex castellated shear nut an320c5 b18.2.22960
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PerigeeMICastle Nut (Hex)400 Stainless (405, 410,416,420,430 etc.)Passivated5/16-24 x 1/2 x 21/64hex castle nut b18.2.2298
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Buy Castellated Nuts from one of our FCH Network Partners
Zoro Tools Inc.Castle Nut (Hex)Grade 2Zinc/Clear5/16-245/16-24 grade 2 zinc plated finish low carbon steel round slotted castle nut 50 pk.
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Buy Castellated Nuts from one of our FCH Network Members
YANKEENHCastle Nut (Hex)SteelZinc/Clear5/16-245/16-24 hex castle slotted nut zinc pltd34
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HayesCACastle Nut (Hex)SteelZinc/Clear5/16-245/16-24 castle nut zinc75
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METRO INDOHCastle Nut (Hex)SteelPlain5/16-24castle nut sae75
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NutsBoltsNECastle Nut (Hex)SteelPlain5/16-245/16-24 castle nut165
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AmericanNYCastle Nut (Hex)SteelPlain5/16-24castellated nut230
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ACCURATEILCastle Nut (Hex)SteelPlain5/16-24castle nuts63
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CenturyFLCastle Nut (Hex)SteelCadmium/Yellow5/16-24an310-5 castle nut5
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CenturyFLCastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Cadmium/Yellow5/16-24an310c5 nut9
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CenturyFLCastle Nut (Hex)SteelCadmium/Yellow5/16-24an320-55
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ASMCILCastle Nut (Hex)Grade 5Zinc/Clear5/16-24fine gr5 hex castle nut med carb zp265
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PerigeeMICastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Cadmium/Yellow5/16-24hex castellated airframe nut an310c5 b18.2.21095
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PerigeeMICastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Cadmium/Yellow5/16-24hex castellated airframe nut an310c5 b18.2.24863
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PerigeeMICastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-24hex castellated shear nut an320c5 b18.2.22960
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PerigeeMICastle Nut (Hex)400 Stainless (405, 410,416,420,430 etc.)Passivated5/16-24 x 1/2 x 21/64hex castle nut b18.2.2298
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CNBILCastle Nut (Hex)SteelZinc/Clear5/16-24castle nut1371
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DeltaTXCastle Nut (Hex)SteelZinc/Clear5/16-24fin castle nut steel zinc nf 5/16-243084
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CascadeORCastle Nut (Hex)SteelPlain5/16-24castle s b18.2.22100
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AIHAZCastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-245/16-24 unf 3a nut s/s 304ss AN310C513
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HBBOLTCACastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-24castle nut 18-8113
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SISAZCastle Nut (Hex)SteelCadmium/Yellow5/16-24castle nut low-height cad ii AN320-5200
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LibertyILCastle Nut (Hex)SteelZinc/Clear5/16-24hex castle nut1,970
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NorthernMNCastle Nut (Hex)Grade 5Plain5/16-24s/o 5/16-24 nf gr5 castle nut plain pkg65
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NorthernMNCastle Nut (Hex)Grade 5Zinc/Clear5/16-24nf gr5 castle nut pkg48
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MasFasCorpNVCastle Nut (Hex)SteelCadmium/Yellow5/16-24an320-5inquire
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GLFOHCastle Nut (Hex)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-24an320-c5 304ss69
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Kanebridge ILCastle Nut (Hex)SteelZinc/Clear5/16-245/16-24 castle nut zinc7.500
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Kanebridge ILCastle Nut (Hex)Grade 5Zinc/Clear5/16-245/16-24 castle nut grade 5 zinc7.500
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All SizeTXCastle Nut (Hex)SteelPlain5/16-245/16-24 slotted castle nut b18.2.23,571
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All SizeTXCastle Nut (Hex)SteelPlain5/16-245/16-24 slotted castle nut plain b18.2.2458
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TimberlineCOCastle Nut (Hex)SteelPlain5/16-24hx cstl nut 5/16-2426
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TimberlineCOCastle Nut (Hex)SteelPlain5/16-24hx cstl nut pkg 5/16-24242
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