5/16-18 Machine Screw Nut

Machine screw nuts are hex and square nuts available in much smaller sizes than regular finished hex nuts and are usually used with machine screws rather than machine bolts.

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
Zoro Tools Inc.Machine Screw NutSteelZinc/Clear5/16-185/16-18 zinc plated finish carbon steel machine screw hex nuts 100 pk.
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Zoro Tools Inc.Machine Screw NutGrade AZinc/Clear5/16-185/16-18 steel zinc plated finish machine screw square nut 100 pk.
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Buy Machine Screw Nut from one of our FCH Network Members
UNEEDANJMachine Screw NutBrassPlain5/16-18square m/s nut300
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IRFNJMachine Screw NutSteelPlain5/16-18machine screw hex nut stl (chamfered bottom)6685
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IRFNJMachine Screw NutSteelPlain5/16-18machine screw hex nut stl (chamfered bottom)6685
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IRFNJMachine Screw NutSteelZinc/Clear5/16-18 x 9/16 x 7/32hex machine screw nut stl nickel clear (chamfered bottom)15340
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IRFNJMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18square machine screw nut 18-8 s/s6514
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IRFNJMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18square machine screw nut 18-8 s/s6514
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IRFNJMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18square machine screw nut 18-8 s/s6514
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IndexFastCAMachine Screw NutSteelZinc/Clear5/16-18rf 516240-214 regular type lock nut 5/16-24 steel/mechanical zinc1000
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GlobalCAMachine Screw NutSteelZinc/Clear5/16-18machine screw nut i900
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GlobalCAMachine Screw NutNylonPlain5/16-18machine screw nut230
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GlobalCAMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18machine screw nut 18-8 ss430
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YANKEENHMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-185/16-18 machine screw nut stainless steel165
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ACFCAMachine Screw NutSteelZinc/Clear5/16-185/16-18 hex machine screw nut z/p rohs compliant95
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ACFCAMachine Screw NutBrassNickel5/16-185/16-18 brass hex m/s nuts nickel pltd50
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ACFCAMachine Screw NutSteelPlain5/16-185/16-18 square m/s nut plain5
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HayesCAMachine Screw NutSteelZinc/Clear5/16-185/16-18 hex machine screw nut zinc1667
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HayesCAMachine Screw NutAluminumPlain5/16-185/16-18 hex machine screw nut alum16
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QCSORMachine Screw NutSteelZinc/Clear5/16-185/16-18 hex m/s nut zinc2764
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QCSORMachine Screw NutSteelZinc/Clear5/16-185/16-18 square m/s nut zinc100
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SJS ProdCAMachine Screw NutSteelZinc/Clear5/16-18 x 1/25/16-18x1/2 af m/s hexnut zp
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SJS ProdCAMachine Screw NutSteelZinc/Yellow5/16-18hexnut machine screw 5/16-18 zy10000
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SJS ProdCAMachine Screw NutSteelZinc/Clear5/16-18hexnut machine screw 5/16-18 zp rohs1000
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VertexDILMachine Screw NutBrassPlain5/16-185/16-18 nc hex machinescr nut brass23520
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VertexDILMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-185/16-18 nc hex machinescr nut 18-8 st/st37700
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AmericanNYMachine Screw NutBrassPlain5/16-18machine screw nut797
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AmericanNYMachine Screw NutSteelNickel5/16-18 x 9/16 x 7/325/16-18 x 9/16 x 7/32 hex m/s nut pl500
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AmericanNYMachine Screw NutSteelPlain5/16-18 x 7 1/2ind hex m/s 2 1/2 thr w nuts200
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AmericanNYMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 9/16 x 7/325/16-18 x 9/16 x 7/32 hex m/s nut 18-8 304600
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ZAL INDUSCAMachine Screw NutSteelZinc/Clear5/16-185/16-18 machine screw nut pltd5,000
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ZAL INDUSCAMachine Screw NutBrassPlain5/16-185/16-18 machine screw nut brass1,100
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ZAL INDUSCAMachine Screw NutSteelPlain5/16-185/16-18 machine screw nut1,250
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General FMIMachine Screw NutNylonPlain5/16-185/16-18 nylon hex m/s nut b18.2.2 b18.6.33,000
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ACCURATEILMachine Screw NutSteelZinc/Clear5/16-18square ms nut5167
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ACCURATEILMachine Screw NutSteelPlain5/16-18square ms nut50
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CenturyFLMachine Screw NutSteelPlain5/16-185/16-18 hex m/s nut9065
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CenturyFLMachine Screw NutSteelPlain5/16-185/16-18 hex m/s nut67
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CenturyFLMachine Screw NutSteelPlain5/16-185/16-18 hex m/s nut3
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CenturyFLMachine Screw NutSteelPlain5/16-18ms35649-2312777
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CenturyFLMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18ms35649-2314853
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CenturyFLMachine Screw NutSteelCadmium/Yellow5/16-18ms51967-52016
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CenturyFLMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18ms51971-24723
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CenturyFLMachine Screw NutSteelPlain5/16-18ms51943-3321
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Purchase MOMachine Screw NutSteelZinc/Clear5/16-185/16-18 hex m/s nut stl zinc54590
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ASMCILMachine Screw NutSteelPlain5/16-18 x 9/16 x 7/32coarse hex machine screw nut low carb b18.2.2 b18.6.351
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ASMCILMachine Screw NutSteelZinc/Clear5/16-18 x 9/16 x 7/325/16-18x9/16x7/32 coarse hex machine screw nut low carb zp clearance unc3,350
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ASMCILMachine Screw NutSteelZinc/Clear5/16-18coarse square machine screw nut low carb zp908
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FTSOHMachine Screw NutSteelCadmium/Yellow5/16-18ms51967-5 nut329
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JacksonMSMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18nc machine screw nut ss99
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JacksonMSMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18nf machine screw nut ss100
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PerigeeMIMachine Screw NutSteelZinc/Clear5/16-18 x 7/16 x 7/32spcl hex machine screw nut b18.2.2 b18.6.3197
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PerigeeMIMachine Screw NutBrassPlain5/16-18 x 9/16 x 5/32hex machine screw nut b18.2.2 b18.6.3265
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PerigeeMIMachine Screw NutGrade ACadmium5/16-18 x 9/16 x 17/64square nut ms27040-11 b18.2.2 b18.6.333
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PerigeeMIMachine Screw NutGrade ACadmium5/16-18 x 9/16 x 17/64square nut ms27040-11 b18.2.2 b18.6.354
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PerigeeMIMachine Screw NutBrassBlack Oxide5/16-18 x 9/16 x 7/32hex machine screw nut ms35649-2315b b18.2.2 b18.6.3805
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PerigeeMIMachine Screw NutGrade ACadmium5/16-18 x 9/16 x 17/64square nut ms27040-11 b18.2.2 b18.6.31579
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WDMBIAMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18nut sq ms sst (18 8) (pl) 5/16-183000
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WDMBIAMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18nut sq ms sst (18 8) (pl) 5/16-183,000
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ACFCAMachine Screw NutSteelZinc/Clear5/16-185/16-18 hex machine screw nut z/p rohs5997
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ACFCAMachine Screw NutSteelZinc/Clear5/16-185/16-18 square m/s nut z/p rohs5585
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MSBNnullMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18Stainless steel with wax 24612
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CertifiedILMachine Screw NutSteelPlain5/16-185/16-18 square machine screw nut-zps. b18.2.2 b18.6.31,396
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RCFastAZMachine Screw NutBrassPlain5/16-18hex machine screw nutinquire
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RCFastAZMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-185/16-18 hex mach sc nut 18-8 304 (9/16x7/32) 304ss MS35649-2314inquire
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RCFastAZMachine Screw NutSteelZinc/Clear5/16-18square machine screw nut stl cr+3inquire
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RCFastAZMachine Screw NutSteelZinc/Clear5/16-18hex machine screw nut stl cr+3 (9/16x7/32)inquire
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CenturyFLMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18ms16228-5c10
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AIHAZMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-185/16-18 9/16x7/32 ss hex m/s nut 304ss MS35649-2314100
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OlanderCAMachine Screw NutSteelPlain5/16-185/16-18 mach hex nut ms stl cad 238
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SISAZMachine Screw NutSteelZinc/Clear5/16-18hex mach scr nut plate4400
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SISAZMachine Screw NutSteelPlain5/16-185/16-18 non-locking nut cad ii MS35649-2312400
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LibertyILMachine Screw NutSteelZinc/Clear5/16-18hex machine screw nut zinc1,700
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LibertyILMachine Screw NutSteelZinc/Yellow5/16-18square m/s nut & &1,087
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LibertyILMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18hex machine screw nut 18-8 s/s 18-8 s/s100
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LibertyILMachine Screw NutSteelZinc/Clear5/16-18square machine screw square nut rohsflat top and bottom400
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LibertyILMachine Screw NutBrassPlain5/16-18hex machine screw nut30
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ISSCOMOMachine Screw NutGrade 2Zinc/Clear5/16-18hex mach screw nut .562-.545 waf x.225-.208thk57400
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SASCOORMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18machine screw nut 18-8 sst500
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AFIFLMachine Screw NutBrassPlain5/16-185/16-18 hex ms nut brass1000
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AFIFLMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-185/16-18 hex ms nut ss1078
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XL ScrewGAMachine Screw NutSteelPlain5/16-18 x 9/16 x 7/32hex ms nuts dc-dc3,500
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XL ScrewGAMachine Screw NutSteelZinc/Clear5/16-18 x 9/16 x 7/32hex ms nuts dc-dc zp3,500
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ASMCILMachine Screw NutSteelZinc/Clear5/16-18 x 7/16 x 7/32coarse hex machine screw nut low carb zp3,400
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MasFasCorpNVMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18hex machine screw nut 18-8 s/sinquire
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GLFOHMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-185/16-18 (9/16x7/32) ss hex m/s nut 304ss MS35649-2314232
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GLFOHMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18hex m/s nut 18-8 s/s nut1905
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GLFOHMachine Screw NutSteelZinc/Clear5/16-18hex m/s nut zc nut2805
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GLFOHMachine Screw NutAluminumPlain5/16-18hex m/s nut alum nut44
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SJS ProdCAMachine Screw NutSteelPlain5/16-18machine screw hexnut 5/16-18350
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Kanebridge ILMachine Screw NutSteelBlack Oxide5/16-185/16-18x9/16x7 standard pattern hex machine screw nut black oxide75,000
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Kanebridge ILMachine Screw NutSteelCadmium5/16-185/16-18 , military hex machine screw nuts cadmium ms35649-231225,000
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Kanebridge ILMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-185/16-18x9/16x7 standard pattern hex machine screw nut 18-8 stainless steel37.500
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Kanebridge ILMachine Screw NutSteelZinc/Clear5/16-185/16-18x9/16x7 coarse thread standard pattern hex machine screw nut zinc75,000
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Kanebridge ILMachine Screw NutSteelZinc/Clear5/16-185/16-18 square machine screw nut zinc50,000
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Kanebridge ILMachine Screw NutSteelZinc/Yellow5/16-185/16-18x9/16x7 hex machine screw nut zinc yellow75,000
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Kanebridge ILMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-185/16-18 military hex machine screw nuts 300 series stainless steel dfar ms35649-23146.250
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Kanebridge ILMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-185/16-18 square machine screw nut 18-8 stainless steel25,000
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IRFNCMachine Screw NutSteelPlain5/16-18machine screw hex nut stl6780
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FMPMAMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18hex m/s nut (9/16 x 7/32)21000
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FMPMAMachine Screw NutBrassNickel5/16-18hex m/s nut (9/16 x 7/32)500
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FMPMAMachine Screw NutBrassPlain5/16-18hex m/s nut (9/16 x 7/32)550
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FMPMAMachine Screw NutBrassTin5/16-18hex m/s nut (9/16 x 7/32)3500
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FMPMAMachine Screw NutAluminumPlain5/16-18hex m/s nut (9/16 x 7/32)41
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MAINSOURCNHMachine Screw NutSteelPlain5/16-18machine screw nut stl z/clr156
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MAINSOURCNHMachine Screw Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18ms35649-2314 (m/s nut 5/16-18 ss) 304ss50
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Valley NuWAMachine Screw NutSteelZinc/Black5/16-18nc hex machine screw nut zb73
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TimberlineCOMachine Screw NutSteelZinc/Clear5/16-18sq st m/s nut zn 5/16-183961
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TimberlineCOMachine Screw NutSteelPlain5/16-18sq m/s nut 5/16-181193
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