#4 Cap Nuts

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 
TSFTXCap Nut (Acorn Nut)SteelBlack Oxide#4-40nylon locking acorn nut black 4401300
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CenturyFLCap Nut (Acorn Nut)SteelPlain#4-404-40 cap nut low crn 2 piece1500
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CenturyFLCap Nut (Acorn Nut)SteelPlain#4-404-40 cap nut5609
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SJS ProdCACap Nut (Acorn Nut)NylonPlain#4-404-40 nylon capnut
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Cal FastenrsCACap Nut (Acorn Nut)NylonPlain#4-404-40 acorn cap nut nylon black 0500440cnb1,200
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GlobalCACap Nut (Acorn Nut)NylonPlain#4-40acorn cap nut960
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ManscoMICap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40acorn nut 18-8 s/s4,000
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ACFCACap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 s/s acorn cap nut409
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HayesCACap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40pem ckfs2-440 4-40 broaching-type nuts 18-8 s/s49
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SWACOOHCap Nut (Acorn Nut)SteelNickel#4-404-40 two pc acorn nut stl nkl19788
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SWACOOHCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 acorn nut 18-8167
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HayesCACap Nut (Acorn Nut)NylonPlain#4-404-40 acorn cap nut nylon2330
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SWACOOHCap Nut (Acorn Nut)316, 317, A4 StainlessPlain#4-404-40 acorn nut 316ss930
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VertexDILCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 nc cap nut1/4x1/4 18-8 stainless52820
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VertexDILCap Nut (Acorn Nut)BrassPlain#4-404-40 nc cap nut brass85250
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AmericanNYCap Nut (Acorn Nut)BrassPlain#4-40acorn cap nut pl1377
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AmericanNYCap Nut (Acorn Nut)SteelNickel#4-404/40 acorn cap nut nickle pl1000
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AmericanNYCap Nut (Acorn Nut)BrassNickel#4-36 x 1/4acorn cap nut pl2800
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AmericanNYCap Nut (Acorn Nut)BrassZinc/Clear#4-40acorn cap nut pl50
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AmericanNYCap Nut (Acorn Nut)SteelNickel#4-40 x 1/4acorn cap nut pl80
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ZAL INDUSCACap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 acorn cap nut 18-8stn.1
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EmpireWACap Nut (Acorn Nut)SteelPlain#4-404-40 acorn cap nut1500
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AbabaCACap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 acorn cap nut s/s b18.2.2270
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AbabaCACap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 acorn cap nut s/s b18.2.2150
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LippinCACap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40cap nut stainless 18-861
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Future FastenerTXCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 cap nuts ss206
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JacksonMSCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40nc acorn nut 18-8 s/s200
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OlanderCACap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 acorn nut sst rohs1407
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FastWareSaskCap Nut (Acorn Nut)NylonPlain#4-40acorn nut1,000
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JET FITTINGCACap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40nut acorn 440 ss rohs compliant b18.2.2900
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BrikksenFLCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 cap (acorn) nut 18-8 ss 100 per small bag 5 small bags per master pack-generic brand b18.2.21825
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EBN IndusINCap Nut (Acorn Nut)SteelZinc/Clear#4-404-40 acorn cap nut (2 piece) zinc b18.2.2410
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ACFCACap Nut (Acorn Nut)NylonPlain#4-404-40 nylon acorn cap nut200
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ACFCACap Nut (Acorn Nut)NylonPlain#4-404-40 black nylon acorn cap nut1709
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ACFCACap Nut (Acorn Nut)SteelPlain#4-404-40 nylon locking acorn cap nut794
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DeltaTXCap Nut (Acorn Nut)SteelZinc/Clear#4-40acorn nuts steel zinc 4-40100
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DeltaTXCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40acorn nuts 18-8 sst 4-40154
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DeltaTXCap Nut (Acorn Nut)BrassPlain#4-40acorn nuts brass 4-40290
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AIHAZCap Nut (Acorn Nut)SteelPlain#4-40locking cap nut nylon989
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AIHAZCap Nut (Acorn Nut)SteelPlain#4-40locking cap nut nylon989
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StandardMACap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 cap nut 18-8 stainless steel b18.2.2inquire
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StandardMACap Nut (Acorn Nut)BrassPlain#4-404-40 cap nut brass b18.2.2inquire
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HBBOLTCACap Nut (Acorn Nut)SteelNickel#4-40cap nuts nickle1,000
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HBBOLTCACap Nut (Acorn Nut)BrassPlain#4-40cap nuts900
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HBBOLTCACap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40cap nuts 18-8245
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LibertyILCap Nut (Acorn Nut)SteelNickel#4-40cap nut plate plate1,400
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HewesNYCap Nut (Acorn Nut)NylonPlain#4-40cap nut black100
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MFSKSCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40acorn nut low crown62
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MFSKSCap Nut (Acorn Nut)NylonPlain#4-40slotted cap nut318
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MFSKSCap Nut (Acorn Nut)NylonPlain#4-40acorn nut861
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AFIFLCap Nut (Acorn Nut)NylonPlain#4-404-40 cap nut nylon4000
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AFIFLCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 cap nut ss2800
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CONTAERONJCap Nut (Acorn Nut)SteelZinc/Clear#4-40spcl cap nut blk cap792
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GLFOHCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40acorn nut 18-8 s/s nut1400
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Kanebridge ILCap Nut (Acorn Nut)SteelBlack Oxide#4-404-40 two piece low crown cap nut black oxide50,000
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Kanebridge ILCap Nut (Acorn Nut)SteelNickel#4-404-40 two piece low crown cap nut nickel plated50,000
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Kanebridge ILCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 low crown hex cap nut 18-8 stainless steel, 1 piece12.500
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IRFNCCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40acorn cap nut 18-8 s/s1903
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AccutiteCACap Nut (Acorn Nut)SteelPlain#4-40hex cap nut nylon ( locking ) mpi # 0500440lcn900
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MAINSOURCNHCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40acorn cap nut 18-8 ss530
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Valley NuWACap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40nc 18-8 ss cap nut49
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TimberlineCOCap Nut (Acorn Nut)SteelPlain#4-40hx br cap nut pln 4-4027
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Alma BoltMICap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-4018-8 304 acorn cap nut1008
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