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1/2 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)316, 317, A4 StainlessPlain1/2-131/2-13 acorn cap nut 316 ss b18.2.21851
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AbabaCACap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 1/21/2-13 x 1-1/2 s/s capped rnd hd bumpr bolt no nut b18.2.21
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AbabaCACap Nut (Acorn Nut)BrassPlain1/2-131/2-13 acorn cap nut brass b18.2.250
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AbabaCACap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-131/2-13 acorn cap nut s/s b18.2.2229
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AbabaCACap Nut (Acorn Nut)SteelNickel1/2-131/2-13 acorn cap nut stl nkl b18.2.2215
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AbabaCACap Nut (Acorn Nut)SteelPlain1/2-131/2-13 acorn cap nut high crown stl pln b18.2.250
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AbabaCACap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-201/2-20 acorn cap nut s/s b18.2.220
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GLFOHCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Zinc/Clear1/2-13 x 1 1/21/2-13 x 1-1/2 round head bumper bolts w/hex nuts-zinc plated with 18-8 304 steel cap-10/pk A3102 b18.2.2 () () ()10
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GLFOHCap Nut (Acorn Nut)SteelNickel1/2-131/2-13 acorn nut stl nkl b18.2.2 () () ()28
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GLFOHCap Nut (Acorn Nut)Grade 2Zinc/Black1/2-131/2-13 cap nut grade 2 stl bzn b18.2.2 () () ()4754
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AbabaCACap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-131/2-13 acorn cap nut s/s b18.2.230
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AbabaCACap Nut (Acorn Nut)SteelNickel1/2-131/2-13 acorn cap nut stl nkl b18.2.2150
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JET FITTINGCACap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-131/2-13 acorn nut 18-8 569062 b18.2.2461
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StandardMACap Nut (Acorn Nut)BrassPlain1/2-131/2-13 cap nut brass b18.2.21865
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QFCTXCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-131/2-13 acorn cap nut 18-8 s/s b18.2.275
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QFCTXCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-131/2-13 acorn nut 18-8 b18.2.218
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B & K FASTPACap Nut (Acorn Nut)SteelBlack Oxide1/2-131/2-13 acorn nuts black oxide b18.2.214
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B & K FASTPACap Nut (Acorn Nut)SteelPlain1/2-131/2-13 acorn nuts plain domestic b18.2.212
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B & K FASTPACap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-131/2-13 acorn nuts 18-8 stainless b18.2.231
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Marine FastenersFLCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-131/2-13 cap (acorn) nut 18-8 ss 10 per small bag 5 small bags per master pack-generic brand b18.2.23680
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OSSCORICap Nut (Acorn Nut)SteelPlain1/21/2 stud palnut washer cap type-b18.2.21,061
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OSSCORICap Nut (Acorn Nut)SteelPlain1/2-131/2-13 acorn cap nut b18.2.2100
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OSSCORICap Nut (Acorn Nut)SteelZinc/Clear1/2-131/2-13 acorn cap nut-high crown plated b18.2.225
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PerigeeMICap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Passivated1/2-20 x 3/4 x 1 1/321/2-20 x 3/4 x 1-1/32 high crown hex cap nut b18.2.2163
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PerigeeMICap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Passivated1/2-20 x 3/4 x 13/161/2-20 x 3/4 x 13/16 low crown hex cap nut b18.2.2481
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PerigeeMICap Nut (Acorn Nut)400 Stainless (405, 410,416,420,430 etc.)Passivated1/2-20 x 3/4 x 13/161/2-20 x 3/4 x 13/16 low crown cap nut b18.2.298
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PerigeeMICap Nut (Acorn Nut)400 Stainless (405, 410,416,420,430 etc.)Passivated1/2-20 x 3/4 x 13/161/2-20 x 3/4 x 13/16 low crown cap nut b18.2.244
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JET FITTINGCACap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13nut acorn 1/213 stainless steel b18.2.264
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NWFASTTXCap Nut (Acorn Nut)Superalloy (Inconel, Hastelloy, Alloy 20)Plain1/2-131/2-13 acorn nut low crown a194 grade 8s (nitronic 60) stainless steel b18.2.280
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KBSTNCap Nut (Acorn Nut)SteelNickel1/2-131/2-13 acorn cap nut nickel b18.2.2409
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THRDFASTMSCap Nut (Acorn Nut)SteelZinc/Clear1/2-13acorn cap nut b18.2.214
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THRDFASTALCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2nf-20 18-8 ss acorn cap nut b18.2.210
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THRDFASTALCap Nut (Acorn Nut)SteelPlain1/2-13acorn cap nut high crown b18.2.2100
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WSBKYCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13nut acorn hc sst (18-8) (pl) 1/2-13 b18.2.24,000
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All SizeTXCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-131/2-13 cap nut acorn s/s high crown b18.2.2102
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