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SupplierLocTypeMaterialFinishSizeDescriptionQty 
Cal FastenrsCALock Nut, Nylon InsertSteelZinc/Clear#4-40hex nylon insert l/n low profile Cr3+450
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Cal FastenrsCALock Nut with Tooth L/W (K-Lock, Keps, etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40kep nut 18-8 3043,361
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Cal FastenrsCASquare NutBrassPlain#4-40 1/24-40 square nut 1/2 hard brass rev a .187 a.f. x .075 thk 4-40 thread unc-2b nut | nut | nut404
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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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R&S IndusORLock Nut with Tooth L/W (K-Lock, Keps, etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40#4-40 external tooth kep hex locknuts coarse stain a2 (18-8) kep11,893
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EndriesWILock Nut with Tooth L/W (K-Lock, Keps, etc.)SteelZinc/Clear#4-404-40 conical kep nut stl/zinc rohs500
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EndriesWIMachine Screw NutBrassPlain#4-404-40 brass hex machine nut900
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EndriesWILock Nut, Top Locking, All Metal (Automation style, etc.)Cadmium#4-404-40 microsize flexloc cad 32fm-44060
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EndriesWISelf-Clinching NutSteelZinc/Clear#4 x 0.7cm4-2 self clinching nut zinc 4x0.7800
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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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LibertyILMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40small pattern hex machine screw nut 18-8 s/s 3/16 afx1/16 thick 3/16 afx1/16 thick2,650
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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 pl2550
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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 pl12175
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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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MESAFASTCALock Nut, Nylon InsertSteelPlain#4-40hex nut400.0
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MESAFASTCALock Nut, Nylon Insert300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40nylon insert lock nut 18-8 s/s20.0
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MESAFASTCAMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40hex m/s nut 18-8 s/s12,268.0
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MESAFASTCAMachine Screw NutSteelZinc/Clear#4-40machine screw hex nut600.0
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MESAFASTCALock Nut, Nylon InsertSteelZinc/Clear#4-40nylon insert lock nut3,250.0
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MESAFASTCALock Nut with Tooth L/W (K-Lock, Keps, etc.)SteelZinc/Black#4-40keps nut black4,130.0
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MESAFASTCALock Nut with Tooth L/W (K-Lock, Keps, etc.)SteelZinc/Clear#4-40keps nut2,000.0
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MESAFASTCASquare NutSteelZinc/Clear#4-40square nut1,380.0
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EndriesWILock Nut, Nylon InsertSteelZinc/Clear#4-404-40 nm series machine nylon insert locknut hex chromium free 96 hr salt spray zinc4800
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EndriesWIMachine Screw NutSteelZinc/Clear#4-404-40 finished hex machine nut hex chromium free 96 hr salt spray zinc9000
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EndriesWISelf-Clinching Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40sp-440-2 4-40 stainless steel self-clinching nut40000
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HewesNYSelf-Clinching NutSteelPlain#4-404-40 slf-clh nut c440-3 captive9975
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HewesNYMachine Screw NutSteelBlack Oxide#4-40hex m/s nut8800
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HewesNYMachine Screw Nut316, 317, A4 StainlessPlain#4-40hex mach scr nut316 s/s8309
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HewesNYMachine Screw NutSteelBlack Oxide#4-40hex mach scr nutsmall ptn.-ide27776
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EmpireWALock Nut, Nylon Insert300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 nylon insert l/n ss2179
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Irwin IndOntLock Nut with Tooth L/W (K-Lock, Keps, etc.)SteelZinc/Clear#4-404-40 unc k locknuts steel zinc trivalent clear 69500
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Irwin IndOntLock Nut with Tooth L/W (K-Lock, Keps, etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 keps locknut 18.8 stainless steel 16156
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Irwin IndOntMachine Screw NutNylon (Polyamide)Plain#4-404-40 hex nylon m/screw nut # 0400440hn b18.2.2 b18.6.3 4761
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Irwin IndOntMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 unc hex machine screw nuts stainless stl b18.2.2 b18.6.3 33000
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Irwin IndOntMachine Screw NutSteelZinc/Clear#4-404-40 unc hex machine screw nuts steel zinc trivalent clr b18.2.2 b18.6.3 43395
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Irwin IndOntMachine Screw NutSteelZinc/Black#4-404-40 hex m/s nut steel .0002 min zinc trivalent black b18.2.2 b18.6.37267
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Irwin IndOntLock Nut, Nylon Insert300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 nylon insert l/nuts stainless steel b18.2.2 2600
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Irwin IndOntLock Nut, Nylon InsertSteelZinc/Clear#4-404-40 unc steel nylon insert locknuts zinc trivalent clear b18.2.2 13500
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Irwin IndOntLock Nut, Nylon Insert300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 nylon insert jam nut stainless steel b18.2.21900
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Irwin IndOntFinished Hex NutSteelZinc/Clear#4-404-40 hex nut #2 pattern steel trivalent zinc clear b18.2.2 415
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Irwin IndOntMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 on #2 hex machine screw nuts small pattern s/s b18.2.2 b18.6.3 475
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MESAFASTCAFinished Hex NutSteelZinc/Clear#4-40 .0544-40 (.054) pem nut NTPEM00421,000.0
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MESAFASTCALock Nut with Tooth L/W (K-Lock, Keps, etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40keps nut 18-8 s/s63.0
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OlanderCAWing NutSteelZinc/Clear#4-404-40 wing nut stl zn cr3 () ()339
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Fort DearILMachine Screw NutSteelPlainhex nuts 4-40 m/s |480
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MESAFASTCALock Nut, Nylon InsertSteelZinc/Clear#4-40thin pattrn nylon insert hex nut zc3,000.0
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SunPackFLMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40#4-40 18-8 ss machine screw hex nut75
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Purchase MOMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 hex m/s nut 18-8 sta stl (013009-3401)855
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Purchase MOFinished Hex NutNylon (Polyamide)Plain#4-404-40 hex nut nylon natural3000
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Purchase MOLock Nut, Nylon InsertSteelZinc/Clear#4-404-40 nylon insert l/n stl zn8000
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Purchase MOMachine Screw NutSteelZinc/Clear#4-404-40 hex m/s nut (3/16 across flats) stl zn14730
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Purchase MOMachine Screw NutSteelZinc/Clear#4-40 1/44-40 hex m/s nut stl zinc 1/4 across flats29000
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Purchase MOSelf-Clinching NutSteelZinc/Clear#4-404-40 self clinch nut stl zinc4450
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Purchase MOLock Nut with Tooth L/W (K-Lock, Keps, etc.)SteelZinc/Clear#4-404-40 hex keps nut steel zinc5000
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HBBOLTCAFinished Hex NutSteelZinc/Clear#4-48fin hex nuts400
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HBBOLTCAFinished Hex Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40flex nuts 18-83
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WDMBIAMachine Screw NutSteelPlain#4-40nut hex machine screw st (zf) 4-40 (W0S0)38,195
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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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Bryce FastenerAZTamper-Proof Security Nut (Tri-Groove, Penta-Nut, Slot-Lok, etc.)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404/40 key-rex nut ss m/s x29{x29-11bd}12
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WesternCAMachine Screw NutSteelZinc/Clear#4-404-40 small pattern machine screw nut steel zinc plated25,000
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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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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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ACFCALock Nut with Tooth L/W (K-Lock, Keps, etc.)SteelZinc/Clear#4-404-40 shakeproof keps z/p 501-041800-00-0251-055145200
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ACFCASelf-Clinching NutSteelZinc/Clear#4-404-40 steel self clinching nut z/p rohs600
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ACFCALock Nut with Tooth L/W (K-Lock, Keps, etc.)SteelZinc/Clear#4-404-40 conical kep nut z/p rohs compliant82
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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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ACFCASelf-Clinching Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 s/s self clinching nut193
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ACFCASelf-Clinching Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 s/s self clinching nut819
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ACFCASelf-Clinching Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 s/s self clinching nut1000
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ACFCASelf-Clinching Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 s/s non-locking self clinching nut537
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ACFCAMachine Screw NutSteelPlain#4-404-40 hex m/s nut plain1100
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ACFCAMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 s/s extra thin small pattern hex m/s nut975
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ACFCAMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Black Oxide#4-404-40 s/s hex machine screw nut black oxide1588
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ACFCAMachine Screw NutSteelBlack Oxide#4-404-40 (3/16) m/s hex nut black oxide350
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ACFCAMachine Screw NutSteelNickel Plated#4-404-40 hex m/s nut nickel350
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ACFCAMachine Screw NutSteelZinc/Clear#4-404-40 hex machine screw nut z/p rohs compliant16770
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ACFCAMachine Screw NutBrassPlain#4-404-40 brass hex m/s nut362
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ACFCAMachine Screw NutSteelZinc/Yellow#4-404-40 small pattern hex machine screw nut zinc yellow rohs (3/16 af)14845
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ACFCAMachine Screw NutSteelZinc/Clear#4-404-40 small pattern hex machine screw nut z/p (3/16 af) rohs300
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ACFCALock Nut, Nylon Insert300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 s/s ( nm ) nylon insert locknut6390
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ACFCALock Nut, Nylon Insert300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-404-40 ( ntm ) s/s thin height nylon insert locknut2570
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ACFCALock Nut, Nylon InsertSteelZinc/Clear#4-404-40 ( ntm ) thin height nylon insert locknut z/p rohs compliant385
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WurthOntMachine Screw NutGrade 2Zinc/Clear#4-40nut hx ms gr2 (zn) 4-40 b18.2.2 b18.6.33600
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WurthOntMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#4-40nut hx ms sst (18-8) (pl) 4-40 b18.2.2 b18.6.32907
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Wurth AdaMNMachine Screw NutGrade 2Zinc/Clear#4-40nut hex m/s grade 2 (zt) 4-4021,150
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Wurth AdaMNLock Nut, Nylon InsertGrade AZinc/Clear#4-40nut hex nyl/insert nm grade a (zt) 4-402,000
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MetricThrdCALock Nut, Nylon InsertSteelPlain#4-40# 4-40 st/zn nylon insert locknutsstock
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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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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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