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1/2-13 Machine Screws

Machine Screws are uniformly threaded screws which are designed to be screwed into pre-drilled, pre-threaded holes, or in conjunction with a nut, usually with a diameter less than 1/4inch. Larger diameter machine screws with a hex head are usually referred to as machine bolts.

199,663 Machine Screw, showing 200, (click on any line for more information)

Search Results Sponsored by ISSCO, Inc., your source for Machine Screws. For more results, visit   isscoinc.com
SupplierLocTypeMaterialFinishSizeDescriptionQty 
ISSCOMOMachine ScrewSteelZinc/Clear1/2-13 x 3 1/2slotted flat200
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ISSCOMOMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 4 1/2slotted flat 18-8 stainless880
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ISSCOMOMachine ScrewSteelZinc/Clear1/2-13 x 1mach phillips flat z/p400
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ISSCOMOMachine ScrewSteelZinc/Clear1/2-13 x 1 1/4mach slotted flat z/p2150
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HayesCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 91/2-13 x 9 slotted flat m/s 18-8ss6
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HayesCAMachine ScrewSteelZinc/Clear1/2-13 x 11/2-13 x 1 phil flat m/s zinc180
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HayesCAMachine ScrewBrassPlain1/2-13 x 11/2-13 x 1 slotted flat m/s brass60
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HayesCAMachine ScrewBrassPlain1/2-13 x 1 3/41/2-13 x 1 3/4 slotted flat m/s brass18
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HayesCAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 3/41/2-13 x 1 3/4 slotted round m/s 18-8ss56
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HayesCAMachine Screw316, 317, A4 StainlessPlain1/2-13 x 1 1/21/2-13 x 1 1/2 slotted flat m/s 316ss4
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HayesCAMachine ScrewNi-Cu Alloy (Monel, K-Monel, etc.)Plain1/2-13 x 1 1/41/2-13 x 1 1/4 slotted flat m/s monel3
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SWACOOHMachine ScrewSteelZinc/Clear1/2-13 x 1 1/21/2-13x1 1/2 slotted flat ms stl zinc1250
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NAPPCOTXMachine ScrewSteelZinc/Clear1/2-13 x 1 1/4flat slotted m/s stl zinc 1/2-13x1-1/4 100
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Alma BoltMIMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 3st. st. flat slotted246
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LibertyILMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 3/4slotted flat m/s 18-81
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LibertyILMachine ScrewSteelZinc/Clear1/2-13 x 2 1/2slotted flat w zinc160
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LibertyILMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 1/2slotted flat m/s 18-813
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LibertyILMachine ScrewSteelZinc/Clear1/2-13 x 1 1/4slotted flat w zinc14
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LibertyILMachine ScrewSteelPlain1/2-13 x 1slotted flat w307
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LibertyILMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 2 1/2slotted flat m/s 18-814
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LibertyILMachine ScrewSteelZinc/Clear1/2-13 x 2slotted flat w zinc667
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LibertyILMachine ScrewSteelZinc/Clear1/2-13 x 3slotted flat w zinc222
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LibertyILMachine ScrewSteelPlain1/2-13 x 2slotted flat special w special690
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LibertyILMachine ScrewSteelPlain1/2-13 x 2 1/4flat m/s450
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LibertyILMachine ScrewSteelZinc/Clear1/2-13 x 2 3/4slotted flat w zinc66
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LibertyILMachine ScrewSteelZinc/Clear1/2-13 x 2slotted round w95
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LibertyILMachine ScrewSteelZinc/Clear1/2-13 x 6slotted round w zinc75
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LibertyILMachine ScrewSteelPlain1/2-13 x 2 1/4slotted round w1,050
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LibertyILMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 3/4slotted round m/s 18-8270
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LibertyILMachine ScrewSteelZinc/Clear1/2-13 x 2 1/2slotted round w zinc50
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HayesCAMachine ScrewSteelPlain1/2-13 x 31/2-13 x 3 slotted round m/s pln20
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Fastener OHMachine ScrewSteelZinc/Clear1/2-13 x 2 1/2slotted flat head machine screw 1/2-13x2-1/2 zinc20
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Fastener OHMachine ScrewBrassPlain1/2-13 x 2phillips flat machine screw 1/2-13x2 brass6
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Fastener OHMachine ScrewBrassPlain1/2-13 x 2 1/2slotted flat machine screw1/2-13x2-1/2 brass3
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Fastener OHMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 3/4slotted flat machine screw 1/2-13x1-3/4 18.8 75
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HayesCAMachine ScrewSteelGalvanized1/2-13 x 21/2-13 x 2 slotted flat m/s hdg19
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XL ScrewGAMachine ScrewSteelZinc/Clear1/2-13 x 6slotted round ms & clear chromate100
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XL ScrewGAMachine ScrewSteelZinc/Clear1/2-13 x 2slotted flat ms & clear chromate400
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XL ScrewGAMachine ScrewSteelZinc/Clear1/2-13 x 3slotted flat ms & clear chromate250
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XL ScrewGAMachine ScrewSteelZinc/Clear1/2-13 x 1 1/4slotted flat ms & clear chromate600
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XL ScrewGAMachine ScrewSteelZinc/Clear1/2-13 x 1slotted flat ms & clear chromate700
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XL ScrewGAMachine ScrewSteelZinc/Clear1/2-13 x 2 1/2slotted flat ms & clear chromate300
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XL ScrewGAMachine ScrewSteelZinc/Clear1/2-13 x 3 1/2slotted flat ms & clear chromate200
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XL ScrewGAMachine ScrewSteelZinc/Clear1/2-13 x 4slotted flat ms & clear chromate180
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XL ScrewGAMachine ScrewSteelZinc/Clear1/2-13 x 1 1/2slotted flat ms & clear chromate500
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XL ScrewGAMachine ScrewSteelZinc/Clear1/2-13 x 5slotted flat ms & clear chromate150
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XL ScrewGAMachine ScrewSteelZinc/Clear1/2-13 x 4 1/2slotted flat ms & clear chromate150
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XL ScrewGAMachine ScrewSteelZinc/Clear1/2-13 x 6slotted flat ms & clear chromate120
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Fastener OHMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 1/4slotted flat machine screw 1/2-13x1-1/4 18.8125
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MidStatesMIMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 3/41/2-13 x 1 3/4 slotted flat m/s 18-82
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MidStatesMIMachine ScrewSteelZinc/Clear1/2-13 x 3/4flat slotted undercut m/s znc3282
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IPCVAMachine ScrewSteelZinc/Clear1/2-13 x 11/2-13x1 f.h. slotted. m/s steel cr3 zinc-rohs758
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IPCVAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 1/21/2-13x1 1/2 f.h. slotted. m/s 18-8 ss235
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IPCVAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 31/2-13x3 f.h. slotted. m/s 18-8 ss255
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NorthernMNMachine ScrewSteelZinc/Clear1/2-13 x 3/4m/s flat slotted pk zc304
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NorthernMNMachine ScrewSteelZinc/Clear1/2-13 x 3m/s flat slotted pk zc64
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NorthernMNMachine ScrewSteelZinc/Clear1/2-13 x 1 1/4m/s round slotted pk zc29
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NorthernMNMachine ScrewSteelZinc/Clear1/2-13 x 3m/s round slotted311
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NorthernMNMachine ScrewSteelZinc/Clear1/2-13 x 6m/s round slotted825
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NorthernMNMachine ScrewSteelPlain1/2-13 x 3m/s flat slotted stain8
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HBBOLTCAMachine ScrewSteelZinc/Clear1/2-13 x 1flat slotted75
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HBBOLTCAMachine ScrewSteelZinc/Clear1/2-13 x 1 1/2flat mach scws84
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HBBOLTCAMachine ScrewSteelZinc/Clear1/2-13 x 6flat slotted mach4
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HBBOLTCAMachine ScrewSteelZinc/Clear1/2-13 x 1 3/4flat mach scws185
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HBBOLTCAMachine ScrewSteelZinc/Clear1/2-13 x 2 1/2flat mach scws370
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HBBOLTCAMachine ScrewSteelZinc/Clear1/2-13 x 1 1/4flat mach scws30
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HBBOLTCAMachine ScrewBrassPlain1/2-13 x 2flat19
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HBBOLTCAMachine ScrewBrassPlain1/2-13 x 1 1/2flat14
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HBBOLTCAMachine ScrewBrassPlain1/2-13 x 3/4flat slotted8
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HBBOLTCAMachine ScrewBrassPlain1/2-13 x 3flat25
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HBBOLTCAMachine ScrewBrassPlain1/2-13 x 2round6
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HBBOLTCAMachine ScrewSteelZinc/Clear1/2-13 x 1 1/2round500
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HBBOLTCAMachine ScrewSteelZinc/Clear1/2-13 x 1round246
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HBBOLTCAMachine ScrewSteelZinc/Clear1/2-13 x 2round mach80
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HBBOLTCAMachine ScrewSteelZinc/Clear1/2-13 x 1 1/4slotted round zp300
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HBBOLTCAMachine ScrewSteelZinc/Clear1/2-13 x 2 1/2round mach scws8
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HBBOLTCAMachine ScrewSteelZinc/Clear1/2-13 x 6round mach76
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HBBOLTCAMachine ScrewSteelZinc/Clear1/2-13 x 3round mach55
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HBBOLTCAMachine ScrewSteelZinc/Clear1/2-13 x 5round mach13
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BuckeyeOHMachine ScrewSteelPlain1/2-13 x 3/41/2-13 x 3/4 mod rh screwinquire
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GUIDONNJMachine ScrewSilicon BronzePlain1/2-13 x 3slotted flat head3,000
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HodellOHMachine ScrewSteelZinc/Clear1/2-13 x 11/2-13x1 slotted round m/s zinc6
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HodellOHMachine ScrewSteelPlain1/2-13 x 1 1/21/2-13x1 1/2 slotted flat machine screw94
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HodellOHMachine ScrewSteelGalvanized1/2-13 x 1 1/41/2-13 x1 1/4 slotted flat machine screw mech galv13
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HodellOHMachine ScrewSteelGalvanized1/2-13 x 1 3/41/2-13 x1 3/4 slotted flat machine screw hdg nc 50c175msfg6
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HodellOHMachine ScrewSteelZinc/Clear1/2-13 x 1 1/21/2-13x1 1/2 slotted flat machine screw zinc48
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J&L INMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 21/2-13 X 2 STAINLESS FLAT HD M/S SLOTTED b18.6.3209
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Kanebridge ILMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 11/2-13x1 slotted flat machine screw fully threaded 18-8 stainless steel2.500
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Kanebridge ILMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 1/21/2-13x1 1/2 slotted flat machine screw fully threaded 18-8 stainless steel2.500
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Kanebridge ILMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 2 1/41/2-13x2 1/4 slotted flat machine screw fully threaded 18-8 stainless steel2.500
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Kanebridge ILMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 3/41/2-13x1 3/4 slotted flat machine screw fully threaded 18-8 stainless steel2.500
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Kanebridge ILMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 1/41/2-13x1 1/4 slotted flat machine screw fully threaded 18-8 stainless steel2.500
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Kanebridge ILMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 51/2-13x5 slotted flat machine screw fully threaded 18-8 stainless steel1.250
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Kanebridge ILMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 4 1/21/2-13x4 1/2 slotted flat machine screw fully threaded 18-8 stainless steel1.250
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Kanebridge ILMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 2 3/41/2-13x2 3/4 slotted flat machine screw fully threaded 18-8 stainless steel2.500
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Kanebridge ILMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 41/2-13x4 slotted flat machine screw fully threaded 18-8 stainless steel1.250
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Kanebridge ILMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 3 1/21/2-13x3 1/2 slotted flat machine screw fully threaded 18-8 stainless steel2.500
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Kanebridge ILMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 31/2-13x3 slotted flat machine screw fully threaded 18-8 stainless steel2.500
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Kanebridge ILMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 61/2-13x6 slotted flat machine screw fully threaded 18-8 stainless steel1.250
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Kanebridge ILMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 5 1/21/2-13x5 1/2 slotted flat machine screw fully threaded 18-8 stainless steel1.250
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Kanebridge ILMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 3/41/2-13x3/4 slotted round machine screw fully threaded 18-8 stainless steel2.500
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Kanebridge ILMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 21/2-13x2 slotted round machine screw fully threaded 18-8 stainless steel2.500
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Kanebridge ILMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 11/2-13x1 slotted round machine screw fully threaded 18-8 stainless steel2.500
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Kanebridge ILMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 1/21/2-13x1 1/2 slotted round machine screw fully threaded 18-8 stainless steel2.500
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Kanebridge ILMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 1/41/2-13x1 1/4 slotted round machine screw fully threaded 18-8 stainless steel2.500
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Kanebridge ILMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 2 1/41/2-13x2 1/4 slotted round machine screw fully threaded 18-8 stainless steel2.500
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Kanebridge ILMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 3/41/2-13x1 3/4 slotted round machine screw fully threaded 18-8 stainless steel2.500
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BHAMALMachine ScrewSteelZinc/Clear1/2-13 x 31/2-13x3 round slotted m/s zinc b18.6.38
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GUIDONNJMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 3 1/21/2-13 x 3 1/2 slotted flat machine screw8500
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OSSCORIMachine ScrewSteelZinc/Clear1/2-13 x 11/2-13x1 slotted round m/s plated b18.6.357
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OSSCORIMachine ScrewSteelZinc/Clear1/2-13 x 1 1/41/2-13x1 1/4 slotted flat m/s plated b18.6.3232
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OSSCORIMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 1/21/2-13x1 1/2 slotted flat m/s 18-8 304 b18.6.320
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OSSCORIMachine ScrewSteelZinc/Clear1/2-13 x 41/2-13x4 slotted round m/s plated b18.6.32
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OSSCORIMachine ScrewSteelZinc/Clear1/2-13 x 61/2-13x6 slotted round m/s plated b18.6.321
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OSSCORIMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 21/2-13x2 slotted flat m/s 18-8 304 b18.6.323
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THRDFASTOKMachine ScrewSteelZinc/Clear1/2-13 x 2slotted flat m/s domestic b18.6.3339
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THRDFASTALMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 3/418-8 ss slotted flat m/s b18.6.39
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THRDFASTOKMachine ScrewSteelGalvanized1/2-13 x 1 1/4slotted flat m/s hdg b18.6.311
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THRDFASTMSMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 318-8 ss slotted round m/s b18.6.39
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THRDFASTMSMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 3 1/218-8 ss slotted flat m/s b18.6.310
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Wurth IndD.F.Machine ScrewSteelZinc/Yellow1/2-13 x 1 3/41/2-13 x 1 3/4 slot flat m/s yz-
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Valley NuWAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 2nc 18-8 ss flat slotted43
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Valley NuWAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 3/4nc 18-8 ss flat slotted50
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Valley NuWAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1nc 18-8 ss flat slotted2
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Valley NuWAMachine ScrewSteelZinc/Black1/2-13 x 5nc round slotted zb28
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ACCURATEILMachine ScrewSteelZinc/Clear1/2-13 x 3/4flat slotted50,000
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ACCURATEILMachine ScrewBrassPlain1/2-13 x 1flat slotted10,000
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ACCURATEILMachine ScrewSteelPlain1/2-13 x 2 1/4fillister slotted100
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ACCURATEILMachine ScrewSteelZinc/Clear1/2-13 x 3round slotted1,000
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ACCURATEILMachine ScrewBrassPlain1/2-13 x 1 1/2flat slotted10,000
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ACCURATEILMachine ScrewSteelZinc/Clear1/2-13 x 6round slotted100
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ACCURATEILMachine ScrewSilicon BronzePlain1/2-13 x 1 1/4flat slotted silbrz100
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ACCURATEILMachine ScrewSteelZinc/Clear1/2-13 x 2 1/2fillister slotted175
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ACCURATEILMachine ScrewSteelPlain1/2-13 x 2 3/4fillister slotted50
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ACCURATEILMachine ScrewBrassPlain1/2-13 x 1 1/4flat slotted6,000
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ACCURATEILMachine ScrewSteelZinc/Clear1/2-13 x 4round slotted100
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ACCURATEILMachine ScrewSteelPlain1/2-13 x 3flat slotted500
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ACCURATEILMachine ScrewSteelZinc/Clear1/2-13 x 2 1/2round slotted800
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ACCURATEILMachine ScrewSteelZinc/Clear1/2-13 x 7/8flat slotted600
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SeattleNBWAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 1 1/2phil flat ms 18-8 ss1640
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SeattleNBWAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 4phil flat ms 18-8 ss520
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SeattleNBWAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 3phil flat ms 18-8 ss825
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SeattleNBWAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 2phil flat ms 18-8 ss1190
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SeattleNBWAMachine Screw300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 2 1/2phil flat ms 18-8 ss930
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