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3/8 Thumb Screws

Plain Thumb Screws can either have a round knurled head or a spade head and are designed to be tightened by hand. Plain thumb screws are also referred to as Type P Thumb Screws.

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
AmericanNYThumb Screw (Plain)SteelZinc/Clear3/8-16 x 2thumb pl575
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AmericanNYThumb Screw (Plain)SteelPlain3/8-16 x 1 1/23/8-16 x 1-1/2 thumb screw plain steel300
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AmericanNYThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1 1/43/8-16 x 1 1/4 thumb screw zinc pl4
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NutsBoltsNEThumb Screw (Plain)SteelPlain3/8-16 x 3/83/8-16 x 3/8 knurl set screw4714
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NutsBoltsNEThumb Screw (Plain)SteelPlain3/8-16 x 3/83/8-16x3/8 knurled cup set screw30000
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MidStatesMIThumb Screw (Plain)SteelPlain3/8-16 x 1/2square set sc knurled point942
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Fastener OHThumb Screw (Plain)SteelPlain3/8-16 x 1/2knurled cup point set screw 3/8-16x1/2 alloy steel domestic 24
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NationalOntThumb Screw (Plain)SteelPlain3/8-16 x 1/23/8-16x1/2 thumb screw nyl1000
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MidStatesMIThumb Screw (Plain)SteelPlain3/8-16 x 5/8square set sc knurled point412
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NutsBoltsNEThumb Screw (Plain)SteelZinc/Clear3/8-16 x 3/43/8-16 x 3/4 thumb screw type p zp9
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MidStatesMIThumb Screw (Plain)SteelPlain3/8-16 x 3/4thumb19
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BHAMALThumb Screw (Plain)SteelZinc/Clear3/8-16 x 3/4thumb zn40
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DeltaTXThumb Screw (Plain)SteelZinc/Clear3/8-16 x 3/4thumb screw steel zinc 3/8-16 x 3/4551
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FMPMAThumb Screw (Plain)SteelZinc/Clear3/8-16 x 3/4thumb plain pattern300
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FastWareSaskThumb Screw (Plain)SteelZinc/Clear3/8-16 x 3/4nc thumb type-b33
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KBSTNThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 3/43/8-16 x 3/4 type p or b thumbscrew s/s b18.6.8100
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Kanebridge ILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 3/43/8-16x3/4 thumb screw plain fully thread zinc5,000
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LibertyILThumb Screw (Plain)SteelPlain3/8-16 x 3/43/8-16x3/4 square set knurled cup pt nylok knurled cup pt nylok700
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LibertyILThumb Screw (Plain)SteelPlain3/8-16 x 3/4thumb typt p465
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LibertyILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 3/4thumb type p plate type p plate380
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NorthernMNThumb Screw (Plain)SteelZinc/Clear3/8-16 x 3/4thumb type-b (no shoulder)6
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Fastener OHThumb Screw (Plain)SteelPlain3/8-16 x 3/4knurled cup point set screw 3/8-16x3/4 alloy steel domestic 61
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BuckeyeOHThumb Screw (Plain)SteelPlain3/8-24 x 3/43/8-24 x 3/4 mod st thumb scrinquire
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OSSCORIThumb Screw (Plain)SteelZinc/Clear3/8-16 x 3/43/8-16x3/4 thumb screw plated b18.6.8100
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BuckeyeOHThumb Screw (Plain)SteelZinc/Clear3/8-16 x 3/4 thumb screw type-b steel zinc1000
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THRDFASTALThumb Screw (Plain)SteelZinc/Clear3/8-16 x 3/4thumb b18.6.857
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THRDFASTALThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 3/418-8 ss thumb b18.6.810
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AbabaCAThumb Screw (Plain)SteelZinc/Clear3/8-16 x 13/8-16 x 1 thmb screw stl znc b18.6.8195
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JacksonMSThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1 nc thumb screw plain pattern no shoulder zinc plated (d)492
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WeaverWAThumb Screw (Plain)SteelZinc/Clear3/8-16 x 13/8-16x1 thumb screw zinc46
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ACCURATEILThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 1thumb scr pattern 18-8 s/s50
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ACCURATEILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1thumb scr plain pat6840
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R&S IndusORThumb Screw (Plain)SteelZinc/Clear3/8-16 x 13/8-16x1 thumb screw type-b no shoulder zinc cr+3 595660/100100
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GLFOHThumb Screw (Plain)SteelZinc/Clear3/8-16 x 13/8-16x1 thumb screw type p stl zc b18.6.8 () () ()401
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THRDFASTFLThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1thumb b18.6.882
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UNEEDANJThumb Screw (Plain)SteelPlain3/8-16 x 1thumb type100
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UNEEDANJThumb Screw (Plain)SteelPlain3/8-16 x 1thumb100
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SRFALThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1thumb-
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NutsBoltsNEThumb Screw (Plain)SteelZinc/Clear3/8-16 x 13/8-16 x 1 thumb screw type p zp80
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BHAMALThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1thumb zn23
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StandardMAThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 13/8-16x1 thumb screw 18-8 stainless steel b18.6.81719
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Future FastenerTXThumb Screw (Plain)SteelPlain3/8 x 13/8 x 1 plain thumb screw plt340
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Future FastenerTXThumb Screw (Plain)SteelFluoropolymer-Based (Xylan, Fluorokote, Teflon)3/8-16 x 13/8-16 x 1 thumb screw xylan red176
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JacksonMSThumb Screw (Plain)SteelPlain3/8 x 1nc thumb24
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LippinCAThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1thumb screw zinc plated434
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DeltaTXThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1thumb screw steel zinc 3/8-16 x 11021
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All SizeTXThumb Screw (Plain)SteelPlain3/8-16 x 13/8-16 x 1 thumb screw b18.6.899
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WDMBIAThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1screw thumb b regular st (zt) spade 3/8-16x1585
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WDMBIAThumb Screw (Plain)SteelZinc/Yellow3/8-16 x 1screw thumb st (zy) 3/8-16x1121
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IRFNJThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1thumb no shoulder fully thread type-b1,000
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ISSCOMOThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1regular type-b630
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QFCTXThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 13/8-16x1 type p thumb screw 18-8 b18.6.85
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Kanebridge ILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 13/8-16x1 thumb screw plain fully thread zinc5,000
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LibertyILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1thumb type p zinc300
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HBBOLTCAThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1p thumb145
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ACCURATEILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1200601128011150000
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ACCURATEILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1thumb , plain50,000
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HayesCAThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 13/8-16 x 1 thumb screw (plain) 18-8ss31
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EndriesWIThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 13/8-16x1 18-8 stainless steel type-b no shoulder thumb screw242
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FACCAOntThumb Screw (Plain)SteelZinc/Yellow3/8-16 x 1thumb screw spade head without shoulder 3/8-16 unc x 1 lg low carb steel cold forged yellow zinc chromate b18.6.86,828
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EndriesWIThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 13/8-16x1 18-8 stainless steel type-b no shoulder thumb screw242
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OSSCORIThumb Screw (Plain)SteelPlain3/8-16 x 13/8-16x1 thumb screw b18.6.8305
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CIFILThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 13/8-16x1 knurled head slotted thumb screw 18-8ss (30) ()30
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GLFOHThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 13/8-16x1 thumb screw type p 18-8 s/s b18.6.8 () () ()280
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Valley NuWAThumb Screw (Plain)SteelZinc/Black3/8 x 1type p thumb zb10
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ACCURATEILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1 1/4thumb scr plain8243
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SISAZThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 1 1/43/8-16x1-1/4 thumb screw s/s50
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AmericanNYThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1 1/43/8-16 x 1 1/4 thumb screw zinc pl4
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MidStatesMIThumb Screw (Plain)Silicon BronzePlain3/8-16 x 1 1/4thumb sil brz30
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DeltaTXThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1 1/4thumb screw steel zinc 3/8-16 x 1 1/41500
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FMPMAThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1 1/4thumb plain pattern100
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Kanebridge ILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1 1/43/8-16x1 1/4 thumb screw plain fully thread zinc5,000
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HBBOLTCAThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1 1/4thumb scr zi ty-p490
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ACCURATEILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1 1/4200601129004350000
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ACCURATEILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1 1/4thumb , plain50,000
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ACCURATEILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1 1/2thumb scr plain140
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MESAFASTCAThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1 1/2thumb type p210.0
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THRDFASTFLThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 1 1/218-8 ss thumb b18.6.875
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AmericanNYThumb Screw (Plain)SteelPlain3/8-16 x 1 1/23/8-16 x 1-1/2 thumb screw plain steel300
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ISSCOMOThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1 1/2regular f/t type-b1145
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NutsBoltsNEThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1 1/23/8-16 x 1 1/2 thumb screw type p zp22
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StandardMAThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 1 1/23/8-16x1-1/2 thumb screw 18-8 stainless steel b18.6.82
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LippinCAThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1 1/2thumb screw zinc plated575
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DeltaTXThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1 1/2thumb screw steel zinc 3/8-16 x 1 1/2226
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WurthINThumb Screw (Plain)SteelCadmium3/8-16 x 1 1/23/8-16 x 1 1/2 thumb screw s cad 1427 pack 250 per poly bag300
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Kanebridge ILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1 1/23/8-16x1 1/2 thumb screw plain fully thread zinc3.750
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LibertyILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1 1/2thumb type p type p49
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HBBOLTCAThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1 1/2thumb scr zi ty-p1,335
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ACCURATEILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1 1/2thumb , plain50,000
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ACCURATEILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1 1/2200601129007350000
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NorthernMNThumb Screw (Plain)SteelZinc/Clear3/8-16 x 1 1/2thumb type-b (no shoulder)550
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DeltaTXThumb Screw (Plain)BrassPlain3/8-16 x 1 1/2thumb screw brass 3/8-16x1 1/275
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OlanderCAThumb Screw (Plain)SteelPlain3/8-16 x 1 3/43/8-16 x 1 3/4 torq thumb scr () ()10
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AbabaCAThumb Screw (Plain)SteelZinc/Clear3/8-16 x 23/8-16 x 2 thmb screw stl znc b18.6.8495
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AmericanNYThumb Screw (Plain)SteelZinc/Clear3/8-16 x 2thumb pl575
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THRDFASTFLThumb Screw (Plain)SteelZinc/Clear3/8-16 x 2thumb b18.6.817
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Cal FastenrsCAThumb Screw (Plain)SteelZinc/Clear3/8-16 x 2thumb type p type p50
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BHAMALThumb Screw (Plain)SteelZinc/Clear3/8-16 x 2thumb zn86
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OBRIENOHThumb Screw (Plain)SteelZinc/Clear3/8-16 x 2thumb type p12
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DeltaTXThumb Screw (Plain)BrassPlain3/8-16 x 2thumb screw brass 3/8-16 x 2125
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ASMCILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 2coarse thumb type-b no shoulder low carb zp117
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Kanebridge ILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 23/8-16x2 thumb screw plain fully thread zinc3.750
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LibertyILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 2thumb type p plate plate170
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HBBOLTCAThumb Screw (Plain)SteelZinc/Clear3/8-16 x 2thumb scr type p32
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ACCURATEILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 220060084201105000
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OSSCORIThumb Screw (Plain)Nylon (Polyamide)Plain3/8-16 x 23/8-16x2 knurled thumb screw nylon b18.6.82,988
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Valley NuWAThumb Screw (Plain)SteelZinc/Black3/8 x 2type p thumb zb100
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StandardMAThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 23/8-16x2 thumb screw type p no shoulder 18-8 s/s steel300
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ACCURATEILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 2 1/2thumb scr plain3975
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Kanebridge ILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 2 1/23/8-16x2 1/2 thumb screw plain fully thread zinc3.750
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ACCURATEILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 2 1/2thumb , plain2,200
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ACCURATEILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 2 1/220060094200322200
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Valley NuWAThumb Screw (Plain)SteelZinc/Black3/8 x 2 1/2type p thumb zb26
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Kanebridge ILThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 33/8-16x3 thumb screw plain full thread 18-8 stainless steel2.500
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Kanebridge ILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 33/8-16x3 thumb screw plain fully thread zinc3.750
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HBBOLTCAThumb Screw (Plain)SteelZinc/Clear3/8-16 x 3thumb scr type p150
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ACCURATEILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 320060084300331350
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ACCURATEILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 3thumb , plain1,350
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OSSCORIThumb Screw (Plain)SteelPlain3/8-16 x 33/8-16x3 thumb screw b18.6.86
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Kanebridge ILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 3 1/23/8-16x3 1/2 thumb screw plain fully thread zinc3.750
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Kanebridge ILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 43/8-16x4 thumb screw plain fully thread zinc3.750
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LibertyILThumb Screw (Plain)SteelZinc/Clear3/8-16 x 4thumb type p zinc30
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LibertyILThumb Screw (Plain)SteelPlain3/8-16 x 4thumb type p40
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ACFCAThumb Screw (Plain)SteelPlain3/8 x 1/43/8x1/4 10-32 thumb screw25
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EndriesWIThumb Screw (Plain)SteelZinc/Clear3/8-16 x 23/8-16x2 type-b no shoulder thumb screw trivalent clear zinc1200
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Raw ProduNJThumb Screw (Plain)BrassPlain3/8-16knurled thumb nuts brass 3/8-16411
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Raw ProduNJThumb Screw (Plain)300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16knurled thumb nuts 304 ss 3/8-16498
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