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1/4 Cap Nuts (ASME B18. 2.2)

Acorn Nuts, also referred to as Crown Hex Nuts, Blind Nuts, Cap Nuts, Domed Cap Nuts, or Dome Nuts, are nuts with a domed end on one side to cover exposed internal threading. The name acorn nut comes from its shape.

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
BHAMALCap Nut (Acorn Nut)SteelZinc/Clear1/4-201/4-20 acorn cap nut zn b18.2.21090
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AbabaCACap Nut (Acorn Nut)316, 317, A4 StainlessPlain1/4-201/4-20 acorn cap nut 316 s/s b18.2.2200
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AbabaCACap Nut (Acorn Nut)BrassPlain1/4-201/4-20 acorn cap nut brass b18.2.2245
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AbabaCACap Nut (Acorn Nut)BrassNickel1/4-201/4-20 acorn cap nut brass nkl b18.2.2100
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AbabaCACap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-201/4-20 acorn cap nut s/s b18.2.22050
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AbabaCACap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-201/4-20 acorn cap nut center lock s/s b18.2.2700
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AbabaCACap Nut (Acorn Nut)SteelNickel1/4-201/4-20 acorn cap nut stl nkl b18.2.24184
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AbabaCACap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-281/4-28 acorn cap nut s/s b18.2.2159
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AbabaCACap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-201/4-20 acorn cap nut high crown s/s b18.2.2530
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GLFOHCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-201/4-20 acorn nut-304 18-8 304 b18.2.2 () () ()24
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GLFOHCap Nut (Acorn Nut)SteelZinc/Clear1/4-201/4-20 acorn nut stl zc b18.2.2 () () ()1203
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GLFOHCap Nut (Acorn Nut)SteelZinc/Black1/4-201/4-20 special acorn nut w/lock stl zinc black b18.2.2 () () ()46210
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GLFOHCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-201/4-20 acorn nut 18-8 s/s b18.2.2 () () ()31321
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Irwin IndOntCap Nut (Acorn Nut)SteelPlain1/4-201/4-20 centerlock low carbon acorn nut 18.8 stainless steel b18.2.2407
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Irwin IndOntCap Nut (Acorn Nut)316, 317, A4 StainlessPlain1/4-201/4-20 hex acorn nuts 316 stainless steel b18.2.2300
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AbabaCACap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-201/4-20 acorn cap nut s/s b18.2.2400
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AbabaCACap Nut (Acorn Nut)SteelNickel1/4-201/4-20 acorn cap nut stl nkl b18.2.2400
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AbabaCACap Nut (Acorn Nut)SteelZinc/Clear1/4-201/4-20 acorn cap nut low crwn cntr-lok stl znc b18.2.21
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AbabaCACap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-281/4-28 acorn cap nut s/s b18.2.2100
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SIIINCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-201/4-20 acorn nut stainless steel 304 b18.2.21335
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SIIINCap Nut (Acorn Nut)SteelNickel1/4-201/4-20 acorn nut nickel plate b18.2.22850
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StandardMACap Nut (Acorn Nut)BrassPlain1/4-201/4-20 cap nut brass b18.2.25300
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StandardMACap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-201/4-20 cap nut 18-8 stainless steel b18.2.243375
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QFCTXCap Nut (Acorn Nut)SteelNickel1/4-201/4-20 acorn cap nut nickel plated b18.2.2987
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QFCTXCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-201/4-20 acorn cap nut 18-8 s/s b18.2.215
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QFCTXCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-201/4-20 acorn nut 18-8 b18.2.25160
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B & K FASTPACap Nut (Acorn Nut)SteelNickel1/4-201/4-20 acorn nuts nickel (cap) b18.2.22533
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B & K FASTPACap Nut (Acorn Nut)SteelPlain1/4-201/4-20 acorn nuts plain b18.2.2252
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B & K FASTPACap Nut (Acorn Nut)SteelZinc/Black1/4-281/4-28 acorn nuts black zinc b18.2.2900
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B & K FASTPACap Nut (Acorn Nut)SteelNickel1/4-281/4-28 acorn nuts nickel b18.2.22000
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B & K FASTPACap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-281/4-28 acorn nuts 18-8 stainless b18.2.241
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Marine FastenersFLCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-201/4-20 locking cap nut s/s w/black nylon cap b18.2.2122245
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Marine FastenersFLCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-281/4-28 hex cap nut ss b18.2.224245
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Marine FastenersFLCap Nut (Acorn Nut)316, 317, A4 StainlessPlain1/4-281/4-28 hex cap nut 316ss 316ss b18.2.28230
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Marine FastenersFLCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-281/4-28 cap (acorn) nut 18-8 ss 100 per small bag 5 small bags per master pack-generic brand b18.2.210595
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Marine FastenersFLCap Nut (Acorn Nut)BrassPlain1/4-201/4-20 cap (acorn) nut brass 100 per small bag 5 small bags per master pack-generic brand b18.2.23000
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General FMICap Nut (Acorn Nut)SteelNickel1/4-20 x 21/4-20 acorn nut 2 pc nickel plate b18.2.23350
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General FMICap Nut (Acorn Nut)SteelPlain1/41/4 in cap nut k110 (trw xx49833) b18.2.2805
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QFCTXCap Nut (Acorn Nut)SteelNickel1/4-20 x 21/4-20 2 pc acorn nut nickel b18.2.2225
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Bostwick INCap Nut (Acorn Nut)316, 317, A4 StainlessPlain1/4-201/4-20 acorn cap nut (2 piece) 316 stainless b18.2.220
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Bostwick INCap Nut (Acorn Nut)BrassPlain1/4-201/4-20 acorn cap nut (2 piece) brass b18.2.278
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Ace Bolt MSCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-201/4-20 ac cap nut h/crown {non-stk} 18-8 ss b18.2.26595
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PerigeeMICap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Passivated1/4-20 x 7/16 x 19/321/4-20 x 7/16 x 19/32 high crown hex cap nut b18.2.21090
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PerigeeMICap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Passivated1/4-28 x 7/16 x .5901/4-28 x 7/16 x .590 hex high crown cap nut b18.2.2163
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PerigeeMICap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Passivated1/4-20 x 7/16 x 15/321/4-20 x 7/16 x 15/32 cap nut b18.2.2105
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PerigeeMICap Nut (Acorn Nut)SteelCadmium1/4-28 x 7/16 x 15/321/4-28 x 7/16 x 15/32 crown cap nut b18.2.21252
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PerigeeMICap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Passivated1/4-28 x 7/16 x 15/321/4-28 x 7/16 x 15/32 low crown hex cap nut b18.2.22735
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PerigeeMICap Nut (Acorn Nut)SteelCadmium1/4-20 x 7/16 x 15/321/4-20 x 7/16 x 15/32 low crown hex cap nut b18.2.2168
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JET FITTINGCACap Nut (Acorn Nut)SteelBlack Oxide1/4-201/4-20 closed end acorn nuts low crown steel black oxide quantity 2000 b18.2.22000
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JET FITTINGCACap Nut (Acorn Nut)Nylon (Polyamide)Plain1/4-20 6/61/4-20 hex acorn nut nylon 6/6 natural b18.2.2500
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JET FITTINGCACap Nut (Acorn Nut)SteelChrome1/4-201/4-20 high crown acorn nut steel chrome b18.2.2325
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JET FITTINGCACap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-28nut acorn 1/428 ss rohs compliant b18.2.2526
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THRDFASTFLCap Nut (Acorn Nut)BrassNickel1/4-20acorn cap nut b18.2.2443
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THRDFASTFLCap Nut (Acorn Nut)BrassNickel1/4-20acorn cap nut b18.2.2343
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THRDFASTFLCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4 x 1 3/818-8 ss acorn nut sleeve b18.2.234
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THRDFASTFLCap Nut (Acorn Nut)SteelZinc/Clear1/4-20acorn cap nut b18.2.22,364
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WSBKYCap Nut (Acorn Nut)Grade 2Zinc/Clear1/4-20nut acorn hc gr2 (zt) 1/4-20 b18.2.23,000
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WSBKYCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20nut acorn lc sst (18-8) (pl) 1/4-20 b18.2.21,200
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DavisILCap Nut (Acorn Nut)SteelBlack Oxide1/4-201/4-20 2 piece low profile cap nut-steel black oxide b18.2.2520
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