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SupplierLocTypeMaterialFinishSizeDescriptionQty 
EndriesWILock Nut, Top Locking, All Metal (Automation style, etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 flexloc microsize 18-8ss1446
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EndriesWIFinished Hex Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 3/164-40 3/16 width across flats 18-8 s/s steel 1/16 thick small pattern hex machine nut384
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EndriesWIKnurled Nut (Thumb Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x 1/44-40x1/4 18-8 s/s steel knurled thumb nut50
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EndriesWISelf-Clinching Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 s/s self-clinching flush nut1000
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EndriesWIMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 small pat hex m/s nut 18-8ss4423
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EndriesWIPlate Nut (Nutplate, Floating Anchor Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40 x .0404-40x.040 floating clinnch nut 18-8 304300
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Cal FastenrsCACap Nut (Acorn Nut)Nylon (Polyamide)Plain#4-404-40 hex cap nut nylon3,152
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NAPPCOTXSelf-Clinching Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40pem bs-440-2 blind self-clinching ss 232
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NAPPCOTXWeld Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Passivated#4-40pem wns-440-0 ss projection weld nut 8
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NAPPCOTXSelf-Clinching NutSteelPlainpem s-440-2 ci (special)self clinching nut 14445
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NAPPCOTXSelf-Clinching Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40pem ac-440-1 floating self-clinch nonlock ss 375
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NAPPCOTXLock Nut, Nylon Insert300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40#4-40 hex miniature l/n nylon insert s/s 86
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NAPPCOTXSelf-Clinching Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40pem cls-440-3 self clinching nut ss 500
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NAPPCOTXSelf-Clinching Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40pem smps-440 selfclinch for ultra thin sheet 725
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NAPPCOTXSelf-Clinching NutSteelPlainpem s-440-3 zi self clinching nut 238
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NAPPCOTXMachine Screw NutSteelZinc/Clear#4-40hexm/s nutsteelzincpltsmallpattern 4-40 7885
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NAPPCOTXSelf-Clinching NutAluminumPlain#4-40pem cla-440-1 aluminum self clinching nut 751
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NAPPCOTXLock Nut with Tooth L/W (K-Lock, Keps, etc.)SteelZinc/Clear#4-40k locknut steel zinc pltd 4-40 450
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UNEEDANJLock Nut with Tooth L/W (K-Lock, Keps, etc.)SteelBrass Plated#4-40kep nuts9500
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UNEEDANJMachine Screw NutSteelPlain#4-40 x 3/16(af) m/s hex nut1140
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UNEEDANJMachine Screw NutSteelPlain#4-36 x 1/4(af) m/s hex nut1100
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UNEEDANJMachine Screw NutSteelPlain#4-40 x 1/4(af) m/s hex nut10000
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UNEEDANJMachine Screw NutSteelPlain#4-40 x 1/4(af) m/s hex nut1900
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UNEEDANJMachine Screw NutSteelPlain#4-36 x 3/16(af) m/s hex nut10000
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UNEEDANJLock Nut with Tooth L/W (K-Lock, Keps, etc.)SteelBlack Oxide#4-40kep nuts1000
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UNEEDANJLock Nut, Nylon InsertSteelPlain#4-40nylon insert l/n4000
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EndriesWILock Nut with Tooth L/W (K-Lock, Keps, etc.)SteelZinc/Clear#4-40 x 1/44-40x1/4 width across flats keps nut trivalent clear zinc6602
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CNBILMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 hex machine screw nut 18.8 ss400
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CNBILLock Nut, Nylon InsertSuperalloy (Inconel, Hastelloy, Alloy 20)Plain#4-404-40 nylon insert lock nut hastelloy c276 per print 406208-2 plain+aco-15
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CNBILMachine Screw NutBrassTin Plated#4-404-40 hex machine screw nut unc 2b 0.1875 a/f 0.0625 thick double chamfer brass material tin plate per 50-80-9+aco-2015
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OneMonroeMISelf-Clinching Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40pem alternative kps6-440-4 captive ckt440-4 positive contact pcb nut ss thread-4-40865
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LibertyILMachine Screw NutSteelZinc/Clear#4-404-40 small pattern hex machine screw nut zinc rohs20
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LibertyILLock Nut, Nylon InsertSteelZinc/Black#4-40ne nylon insert lock nut black1,293
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EndriesWIFinished Hex NutSteelZinc/Clear#4-404-40 finished hex machine nut trivalent clear zinc3000
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EndriesWICap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Black Oxide#4-404-40 18-8 s/s steel low crown acorn black oxide nut 1/4 width across flatsx1/4 height2119
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AmericanNYAluminum#4-40fiber esna l/n ALNS-.04F275
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AmericanNYFinished Hex NutAluminumPlain#4-40red nly insert hex l/n2800
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AmericanNYNylon (Polyamide)#4-40nyl esna l/n aluminum ALNS-.042578
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AmericanNYSelf-Clinching NutAluminumPlain#4-40c5 m2 clinch nut alum700
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AmericanNYLock Nut, Nylon InsertSteelPlain#4-40 x 1/4 x 3/32nyl insdert l/n alum3600
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AmericanNYCap Nut (Acorn Nut)BrassNickel Plated#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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AmericanNYKnurled Nut (Thumb Nut)BrassNickel Plated#4-36 x 1/4 x 13/64knurled nut pl6550
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AmericanNYMachine Screw NutBrassNickel Plated#4-36 x 3/16 x 1/16m/s nut pl1840
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AmericanNYMachine Screw NutBrassCadmium#4-36 x 1/4 x .080m/s nut cad pl10000
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AmericanNYMachine Screw NutBrassCadmium#4-36 x 1/4 x 3/32m/s nut cad pl6200
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AmericanNYMachine Screw NutBrassPlain#4-36 x 1/4 x 3/32m/s nut6700
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AmericanNYMachine Screw NutBrassNickel Plated#4-36 x 1/4 x 3/32m/s nut pl13175
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AmericanNYMachine Screw NutBrassBlack Oxide#4-40 x 3/16 x 1/16m/s nut blk ox2500
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AmericanNYMachine Screw NutBrassNickel Plated#4-40 x 7/32 x 3/32ms nut pl1200
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AmericanNYMachine Screw NutBrassNickel Plated#4-40 x 1/4 x 5/64m/s nut pl1500
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AmericanNYMachine Screw NutBrassZinc/Yellow#4-40 x 1/4m/s nut1000
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AmericanNYMachine Screw NutBrassCadmium#4-40 x 1/4 x .085m/s nut cad pl1600
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AmericanNYMachine Screw NutBrassPlain#4-40 x 1/4 x 3/32m/s nut500
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AmericanNYMachine Screw NutBrassPlain#4-40 x 1/4 x 3/32m/s nut black1000
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EndriesWILock Nut, Nylon Insert300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 nylon insert l/n nm 18-8/a2150
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EndriesWISelf-Clinching NutSteelPlain#4-404-40 self-clinching nut .030 thk1000
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EndriesWILock Nut with Tooth L/W (K-Lock, Keps, etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 keps nut 18-8/a2145
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AztechILLock Nut, Nylon InsertSteelPlain#4-40nyl ins l/n (wht714,000
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AztechILLock Nut, Nylon InsertSteelPlain#4-40nylon insert889,095
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AztechILLock Nut with Tooth L/W (K-Lock, Keps, etc.)SteelGalvanized#4-40#4-40 k-lok (keps) nut g407,330
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AztechILLock Nut, Nylon InsertSteelGalvanized#4-40nyl ins l/n (nm) g34,000
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AztechILLock Nut, Nylon InsertSteelPlain#4-40nyl ins l/n (nm)32,228
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AztechILLock Nut with Tooth L/W (K-Lock, Keps, etc.)SteelGalvanized#4-40#4-40 k-lok (keps) nut g23,820
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AztechILLock Nut with Tooth L/W (K-Lock, Keps, etc.)SteelGalvanized#4-40#4-40 k-lok (keps) nut g5,807
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AztechILLock Nut, Nylon InsertSteelPlain#4-40nyl ins l/n (wht ring4,800
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AztechILSelf-Clinching NutSteelPlain#4-40clinch nuts-ncfma112,000
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AztechILLock Nut with Tooth L/W (K-Lock, Keps, etc.)SteelGalvanized#4-40#4-40 k-lok (keps) nut g9,397
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ManscoMILock Nut, Nylon InsertSteelZinc/Black#4-40hex m/s nylon insert locknut nm pattern triv blk znc 100/box3960
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MFSKSFinished Hex Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40hex nut192
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MFSKSMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Zinc/Yellow#4-40small pattern hex nut6788
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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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MFSKSFinished Hex Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-48hex nut492
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MFSKSLock Nut, Top Locking, All Metal (Automation style, etc.)Nylon (Polyamide)Plain#4-40lock nut763
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MFSKSCap Nut (Acorn Nut)Nylon (Polyamide)Plain#4-40slotted cap nut318
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MFSKSCap Nut (Acorn Nut)Nylon (Polyamide)Plain#4-40acorn nut861
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IRFNJMachine Screw NutBrassPlain#4-40hex machine screw nut53,773
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IRFNJMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40machine screw hex nut 18-8 s/s24,970
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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/s1,903
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SunPackFLMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-4018-8 ss machine screw hex nut75
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ISSCOMOSelf-Clinching NutSteelZinc/Clear#4-404-40 self clinching nut pem (pem eng & mfg) s-440-3zi800
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OneMonroeMISelf-Clinching NutSteelZinc/Clear#4-40pem alternative as-440-2 captive cfas440-2 floating nut crs thread - 4-40 cfas440-2 A004402D182
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OneMonroeMISelf-Clinching NutSteelZinc/Clear#4-40pem alternative as-440-1 captive cfas440-1 floating nut crs thread - 4-40 cfas440-1 A004401D820
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OneMonroeMISelf-Clinching Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40pem alternative ac-440-1 captive cfac440-1 floating nut ss thread - 4-40 cfac440-1 A004401C1090
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OneMonroeMISelf-Clinching Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40pem alternative ac-440-2 captive cfac440-2 floating nut ss thread - 4-40 cfac440-2 A004402C2455
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OneMonroeMISelf-Clinching Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40pem alternative lks-440-1 captive lks-440-1md self-locking self-clhing nut ss thread-4-40505
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OneMonroeMISelf-Clinching NutSteelZinc/Clear#4-40pem alternative pl-440 captive cpl440 self-locking nut crs thread-4-401280
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OneMonroeMISelf-Clinching Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40pem alternative feox-440 captive cfeox440 miniture nut non-locking ss thread - 4-40 cfeox440 M004401C5664
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OneMonroeMISelf-Clinching Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Phosphate#4-40pem alternative fe-440 captive cfe440 miniture nut self-locking ss blk dry film lube thread-4-401320
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OneMonroeMISelf-Clinching Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40pem alternative bs-440-1 captive cfbs440-1 blind nut ss thread-4-401180
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OneMonroeMISelf-Clinching NutSteelZinc/Clear#4-40pem alternative b-440-1 captive cfb440-1 blind nut crs thread-4-404292
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OneMonroeMISelf-Clinching Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40pem alternative bs-440-3 captive cfbs440-3 blind nut ss thread-4-4086
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OneMonroeMISelf-Clinching Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40pem alternative bs-440-2 captive cfbs440-2 blind nut ss thread-4-40870
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OneMonroeMISelf-Clinching NutSteelZinc/Clear#4-40pem alternative b-440-2 captive cfb440-2 blind nut crs thread-4-40576
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OneMonroeMISelf-Clinching Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40pem alternative cls-440-1 captive cs440-1 self-clhing nut ss thread-4-4019615
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OneMonroeMISelf-Clinching NutSteelZinc/Clear#4-40pem alternative s-440-0 captive c440-0 self-clhing nut crs thread-4-4011600
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OneMonroeMISelf-Clinching Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40pem alternative cls-440-2 captive cs440-2 self-clhing nut ss thread-4-4025870
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OneMonroeMISelf-Clinching NutAluminumPlain#4-40pem alternative cla-440-1 captive ca440-1 self-clhing nut alum thread-4-40509
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OneMonroeMISelf-Clinching Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40pem alternative cls-440-0 captive cs440-0 self-clhing nut ss thread-4-404730
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OneMonroeMISelf-Clinching NutSteelZinc/Clear#4-40pem alternative s-440-2 captive c440-2 self-clhing nut crs thread-4-4020192
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OneMonroeMISelf-Clinching NutSteelZinc/Clear#4-40pem alternative s-440-1 captive c440-1 self-clhing nut crs thread-4-4011974
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SISAZSelf-Clinching NutSteelPlain#4-404-40 pcb clinch nut200
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SISAZSelf-Clinching Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 self clinching nut s/s (kfse440-4 ss)700
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SISAZSelf-Clinching Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40equivalent to pem cls-440-11250
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SISAZSelf-Clinching Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40equivalent to pem feox-4401500
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SISAZSelf-Clinching NutSteelZinc/Clear#4-40equivalent to pem as-440-22540
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SISAZLock Nut, Nylon InsertSteelZinc/Clear#4-40 x 1/44-40x1/4 widthx7/64 ht nylon insert thin hex locknuts steel zinc350
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SISAZLock Nut, Flange, w/o serrationsSteelCadmium#4-404-40 double hex flange lock nut alloy steel cadmium nas1804100
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SISAZHigh Hex NutSteelPlain#4-404-40 hex nylon nut 1/4 widthx7/64 high black3100
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SISAZSquare NutSteelZinc/Clear#4-404-40 square m/s nut steel zinc463
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SISAZLock Nut, Nylon Insert300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 nylon insert locknut 18-8 304 steel nm6000
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SISAZLock Nut, Nylon InsertSteelZinc/Clear#4-404-40 nylon insert lock nut steel zinc per print3980
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SISAZMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 small pattern hex machine screw nut 18-8 s/s steel6000
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IRFNJCap Nut (Acorn Nut)PlasticPlain#4-40nut acorn 4-40 black microplastics # 0500440cnb 500-003707,150
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IRFNJCap Nut (Acorn Nut)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 acorn cap nut 18-8 s/s pln n04cap3p1,903
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IRFNJMachine Screw NutSteelZinc/Clear#4-404-40 hex machine screw nut stl znc rohs6,260
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IRFNJFinished Hex Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 hex finish nut 18-8 s/s small pattern 3/16 af898
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IRFNJLock Nut, Nylon Insert300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 nylon insert lock nut 18-8 s/s steel10,000
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IRFNJLock Nut with Tooth L/W (K-Lock, Keps, etc.)SteelZinc/Clear#4-40#4-40 keps nut steel zinc plated rohs compliant 500-002767,233
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BCSBCAFinished Hex NutNylon (Polyamide)Plain#4-404-40 hex nut nylon glass filled b18.2.28,200
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LippinCACoupling NutSteelZinc/Clear#4-40#4-40 coupling nut zinc50
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LippinCALock Nut with Tooth L/W (K-Lock, Keps, etc.)SteelZinc/Clear#4-40#4-40 keps lock nut zinc6800
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SRFALFinished Hex NutBrassPlain#4-40hex finish nut353
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SRFALSelf-Clinching NutSteelZinc/Clear#4-40self-clinching nut-
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BAYFASTCOFLLock Nut, Nylon InsertSteelZinc/Clear#4-40nylon insert lock nut3070
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OBRIENOHMachine Screw NutSteelPlain#4-40nut MS35649-4318785,000
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OBRIENOHLock Nut, Nylon InsertSteelPlain#4-40hex nut3900
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OBRIENOHWing NutSteelZinc/Clear#4-40stamped wing nut1740
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OBRIENOHFinished Hex NutSteelPlain#4-40nas671-4240,000
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THRDFASTFLLock Nut with Tooth L/W (K-Lock, Keps, etc.)SteelZinc/Clear#4-404-40 keps nut2,435
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THRDFASTFLLock Nut, Nylon Insert316, 317, A4 StainlessPlain#4-40t-316 ss nylon ins m/s lock nut b18.2.228
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THRDFASTFLLock Nut, Nylon Insert300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-4018-8 ss nylon ins m/s lock nut b18.2.2451
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GUIDONNJMachine Screw NutBrassNickel Plated#4-40543
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LightningLAMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40hex machine screw nut 18-8 ss8792
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LightningLAMachine Screw NutSteelZinc/Clear#4-40hex machine screw nut1500
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LightningLALock Nut, Nylon InsertSteelZinc/Clear#4-40nylon insert lock nut500
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SeattleNBWAFinished Hex NutBrassPlain#4-40fin hex nut2,000
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SeattleNBWAMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40hex machine screw nut 18-8 ss840
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QFSMIMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40hex machine screw nut (18-8)700
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