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5/16-18 Hex Bolts

Hex Machine Bolts are threaded bolts with a hexagonal head on one end, with no washer face on the bearing surface and a threaded shaft on the other end. Hex bolts are tightened with a wrench and are used to connect metal parts. The body tolerances of hex machine bolts are not as close as those of hex cap screws. Hex machine bolts are covered under ASME Standard B18.2.1

22,751 Hex Machine Bolt, showing 200, (click on any line for more information)

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
SunPackFLHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 1 3/45/16-18x1-3/4 18-8 ss fin hex bolt934
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SunPackFLHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 5 1/25/16-18x5-1/2 18-8 ss fin hex bolt255
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SunPackFLHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 65/16-18x6 18-8 ss fin hex bolt3
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SunPackFLHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 1 3/85/16-18x1-3/8 18-8 ss fin hex bolt125
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SunPackFLHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 45/16-18x4 18-8 ss fin hex bolt14
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SunPackFLHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 3/45/16-18x3/4 18-8 ss fin hex bolt230
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SunPackFLHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 2 1/45/16-18x2-1/4 18-8 ss fin hex bolt364
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SunPackFLHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 25/16-18x2 18-8 ss fin hex bolt125
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SunPackFLHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 2 3/45/16-18x2-3/4 18-8 ss fin hex bolt19
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SunPackFLHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 3 1/25/16-18x3-1/2 18-8 ss fin hex bolt227
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Set ScrewILHex Machine BoltGrade 2Zinc/Clear5/16-18 x 3/4hex m/binquire
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Set ScrewILHex Machine BoltGrade 2Zinc/Clear5/16-18 x 7/8hex boltinquire
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Set ScrewILHex Machine Bolt316, 317, A4 StainlessPlain5/16-18 x 1 1/4316 stainless hex boltinquire
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Set ScrewILHex Machine BoltGrade 2Zinc/Clear5/16-18 x 3/4hex m/binquire
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Set ScrewILHex Machine BoltGrade 2Zinc/Clear5/16-18 x 1.0hex m/binquire
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Set ScrewILHex Machine BoltGrade 2Plain5/16-18 x 2hex m/binquire
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Set ScrewILHex Machine BoltSilicon BronzePainted5/16-18 x 1 3/4bronze 60 000 psi min tensile strength hex m/binquire
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Set ScrewILHex Machine BoltSilicon BronzePainted5/16-18 x 1 3/4bronze 60 000 psi min tensile strength hex m/b tininquire
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AmericanNYHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 1/25/16-18 x 1/2 hex head bolt stainless steel1200
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AmericanNYHex Machine BoltGrade 5Plain5/16-18 x 3 1/2h/b30
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AmericanNYHex Machine BoltSteelZinc/Clear5/16-18 x 7h/b plate200
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AbabaCAHex Machine BoltSteelGalvanized5/16-18 x 15/16-18 x 1 hex bolt stl hdg b18.2.1950
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AbabaCAHex Machine BoltSteelZinc/Clear5/16-18 x 15/16-18 x 1 hex bolt stl znc b18.2.13175
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AbabaCAHex Machine BoltSteelZinc/Clear5/16-18 x 1 1/45/16-18 x 1 1/4 hex bolt stl znc b18.2.11600
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AbabaCAHex Machine BoltSteelGalvanized5/16-18 x 1 1/25/16-18 x 1 1/2 hex bolt stl hdg b18.2.11010
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AbabaCAHex Machine BoltSteelZinc/Clear5/16-18 x 1 1/25/16-18 x 1 1/2 hex bolt stl znc b18.2.1475
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AbabaCAHex Machine BoltSteelGalvanized5/16-18 x 25/16-18 x 2 hex bolt stl hdg b18.2.1949
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AbabaCAHex Machine BoltSteelZinc/Clear5/16-18 x 25/16-18 x 2 hex bolt stl znc b18.2.11207
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AbabaCAHex Machine BoltSteelZinc/Clear5/16-18 x 2 1/45/16-18 x 2 1/4 hex bolt stl znc b18.2.1400
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AbabaCAHex Machine BoltSteelGalvanized5/16-18 x 2 1/25/16-18 x 2 1/2 hex bolt stl hdg b18.2.1275
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AbabaCAHex Machine BoltSteelZinc/Clear5/16-18 x 2 1/25/16-18 x 2 1/2 hex bolt stl znc b18.2.1663
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AbabaCAHex Machine BoltSteelZinc/Clear5/16-18 x 2 3/45/16-18 x 2 3/4 hex bolt stl znc b18.2.1280
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AbabaCAHex Machine BoltSteelZinc/Clear5/16-18 x 35/16-18 x 3 hex bolt stl znc b18.2.1995
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AbabaCAHex Machine BoltSteelZinc/Clear5/16-18 x 3 1/25/16-18 x 3 1/2 hex bolt stl znc b18.2.1196
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AbabaCAHex Machine BoltSteelGalvanized5/16-18 x 45/16-18 x 4 hex bolt stl hdg b18.2.1105
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AbabaCAHex Machine BoltSteelZinc/Clear5/16-18 x 45/16-18 x 4 hex bolt stl znc b18.2.1225
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AbabaCAHex Machine BoltSteelGalvanized5/16-18 x 4 1/25/16-18 x 4 1/2 hex bolt stl hdg b18.2.1397
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AbabaCAHex Machine BoltSteelZinc/Clear5/16-18 x 4 1/25/16-18 x 4 1/2 hex bolt stl znc b18.2.1312
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AbabaCAHex Machine BoltSteelGalvanized5/16-18 x 55/16-18 x 5 hex bolt stl hdg b18.2.1187
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AbabaCAHex Machine BoltSteelZinc/Clear5/16-18 x 55/16-18 x 5 hex bolt stl znc b18.2.1125
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AbabaCAHex Machine BoltSteelZinc/Clear5/16-18 x 1/25/16-18 x 1/2 hex bolt stl znc b18.2.11570
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Jay-CeeMIHex Machine BoltSteelGalvanized5/16-18 x 3 1/25/16-18x3 1/2 hex machine bolt galvanized hot dip galvanized182
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Jay-CeeMIHex Machine BoltSteelGalvanized5/16-18 x 4 1/25/16-18x4 1/2 hex machine bolt galvanized hot dip galvanized300
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AbabaCAHex Machine BoltSteelGalvanized5/16-18 x 15/16-18 x 1 hex bolt stl hdg b18.2.1300
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AbabaCAHex Machine BoltSteelZinc/Clear5/16-18 x 15/16-18 x 1 hex bolt stl znc b18.2.1100
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AbabaCAHex Machine BoltSteelZinc/Clear5/16-18 x 1 1/45/16-18 x 1 1/4 hex bolt stl znc b18.2.1900
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AbabaCAHex Machine BoltSteelGalvanized5/16-18 x 1 1/25/16-18 x 1 1/2 hex bolt stl hdg b18.2.1200
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AbabaCAHex Machine BoltSteelZinc/Clear5/16-18 x 1 1/25/16-18 x 1 1/2 hex bolt stl znc b18.2.1300
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AbabaCAHex Machine BoltSteelZinc/Clear5/16-18 x 25/16-18 x 2 hex bolt stl znc b18.2.1300
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AbabaCAHex Machine BoltSteelGalvanized5/16-18 x 2 1/25/16-18 x 2 1/2 hex bolt stl hdg b18.2.1300
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AbabaCAHex Machine BoltSteelZinc/Clear5/16-18 x 2 1/25/16-18 x 2 1/2 hex bolt stl znc b18.2.1300
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AbabaCAHex Machine BoltSteelZinc/Clear5/16-18 x 35/16-18 x 3 hex bolt stl znc b18.2.1300
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AbabaCAHex Machine BoltSteelZinc/Clear5/16-18 x 3 1/25/16-18 x 3 1/2 hex bolt stl znc b18.2.1200
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AbabaCAHex Machine BoltSteelZinc/Clear5/16-18 x 45/16-18 x 4 hex bolt stl znc b18.2.1150
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AbabaCAHex Machine BoltSteelGalvanized5/16-18 x 4 1/25/16-18 x 4 1/2 hex bolt stl hdg b18.2.1300
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AbabaCAHex Machine BoltSteelZinc/Clear5/16-18 x 4 1/25/16-18 x 4 1/2 hex bolt stl znc b18.2.1150
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AbabaCAHex Machine BoltSteelGalvanized5/16-18 x 55/16-18 x 5 hex bolt stl hdg b18.2.1150
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AbabaCAHex Machine BoltSteelZinc/Clear5/16-18 x 55/16-18 x 5 hex bolt stl znc b18.2.150
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AbabaCAHex Machine BoltSteelZinc/Clear5/16-18 x 1/25/16-18 x 1/2 hex bolt stl znc b18.2.1300
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AbabaCAHex Machine BoltSteelZinc/Clear5/16-18 x 5 1/25/16-18 x 5 1/2 hex bolt stl znc b18.2.150
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AbabaCAHex Machine BoltSteelZinc/Clear5/16-18 x 5/85/16-18 x 5/8 hex bolt stl znc b18.2.1200
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AbabaCAHex Machine BoltSteelZinc/Clear5/16-18 x 75/16-18 x 7 hex bolt stl znc b18.2.1100
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AbabaCAHex Machine BoltSteelZinc/Clear5/16-18 x 3/45/16-18 x 3/4 hex bolt stl znc b18.2.1400
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ExpressCAHex Machine BoltSteelZinc/Clear5/16-18 x 45/16-18x4 hex bolt zinc140
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ExpressCAHex Machine BoltSteelZinc/Clear5/16-18 x 1/25/16-18x1/2 hex bolt zinc5275
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ExpressCAHex Machine BoltSteelZinc/Clear5/16-18 x 3/45/16-18x3/4 hex bolt zinc200
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ExpressCAHex Machine BoltSteelZinc/Clear5/16-18 x 15/16-18x1 hex bolt zinc1500
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ExpressCAHex Machine BoltSteelZinc/Clear5/16-18 x 1 1/25/16-18x1-1/2 hex bolt zinc770
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ExpressCAHex Machine BoltSteelZinc/Clear5/16-18 x 1 3/45/16-18x1-3/4 hex bolt zinc98
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ExpressCAHex Machine BoltSteelZinc/Clear5/16-18 x 25/16-18x2 hex bolt zinc252
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ExpressCAHex Machine BoltSteelZinc/Clear5/16-18 x 2 1/25/16-18x2-1/2 hex bolt zinc700
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ExpressCAHex Machine BoltSteelZinc/Clear5/16-18 x 35/16-18x3 hex bolt zinc88
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ExpressCAHex Machine BoltSteelZinc/Clear5/16-18 x 3 1/45/16-18x3-1/4 hex bolt zinc775
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ExpressCAHex Machine BoltSteelZinc/Clear5/16-18 x 4 1/25/16-18x4-1/2 hex bolt zinc380
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ExpressCAHex Machine BoltSteelZinc/Clear5/16-18 x 55/16-18x5 hex bolt zinc209
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ExpressCAHex Machine BoltGrade 5Zinc/Clear5/16-18 x 1/25/16-18x1/2 hex bolt grade 5 zinc1840
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ExpressCAHex Machine BoltGrade 5Zinc/Clear5/16-18 x 3/45/16-18x3/4 hex bolt grade 5 zinc399
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ExpressCAHex Machine BoltGrade 5Zinc/Clear5/16-18 x 1 1/45/16-18x1-1/4 hex bolt grade 5 zinc46
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ExpressCAHex Machine BoltGrade 5Zinc/Clear5/16-18 x 1 1/25/16-18x1-1/2 hex bolt grade 5 zinc1060
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ExpressCAHex Machine BoltGrade 5Zinc/Clear5/16-18 x 25/16-18x2 hex bolt grade 5 zinc581
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ExpressCAHex Machine BoltGrade 5Zinc/Clear5/16-18 x 2 1/25/16-18x2-1/2 hex bolt grade 5 zinc270
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ExpressCAHex Machine BoltGrade 5Zinc/Clear5/16-18 x 2 3/45/16-18x2-3/4 hex bolt grade 5 zinc266
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ExpressCAHex Machine BoltGrade 5Zinc/Clear5/16-18 x 3 1/25/16-18x3-1/2 hex bolt grade 5 zinc155
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SIIINHex Machine BoltGrade AZinc/Clear5/16-18 x 3/45/16-18 x 3/4 astm a307 grade a zinc finish hex bolt b18.2.11350
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SIIINHex Machine BoltGrade AZinc/Clear5/16-18 x 1 1/25/16-18 x 1-1/2 astm a307 grade a zinc finish hex bolt b18.2.11171
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SIIINHex Machine BoltGrade AZinc/Clear5/16-18 x 1 3/45/16-18 x 1-3/4 astm a307 grade a zinc finish hex bolt b18.2.1625
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SIIINHex Machine BoltGrade AZinc/Clear5/16-18 x 2 1/45/16-18 x 2-1/4 astm a307 grade a zinc finish hex bolt b18.2.1650
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SIIINHex Machine BoltGrade AZinc/Clear5/16-18 x 45/16-18 x 4 astm a307 grade a zinc finish hex bolt b18.2.1625
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RePneu ToMIHex Machine BoltSteelPlain5/16-18 x 15/16-18x1 hex bolt650
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QFCTXHex Machine BoltGrade 5Plain5/16-18 x 6 1/45/16-18x6 hex bolt grade 5 1-1/4 min thread plain b18.2.1405740
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QFCTXHex Machine BoltGrade 5Dip-Spin, Spray-Spin Basecoat + Topcoats (Dacromet, Doerken, Geomet, Magni, etc.)5/16-18 x 6 1/45/16-18x6 hex bolt gr5 1-1/4 thread min magni astm f2833 gr1 cof=0.15 b18.2.138058
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QFCTXHex Machine BoltGrade ADip-Spin, Spray-Spin Basecoat + Topcoats (Dacromet, Doerken, Geomet, Magni, etc.)5/16-18 x 85/16-18x8 hex bolt 4 thread (a307) gr2 magni 565 b18.2.19046
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QFCTXHex Machine BoltGrade 5Galvanized5/16-18 x 6 1/45/16-18x6 hex bolt grade 5 1-1/4 min thread hdg b18.2.1900
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QFCTXHex Machine BoltSteelPlainbracket 3/16x2 x 3 7/8 (a572-65) w/one hole drill & tap for 5/16-18 unc bolt b18.2.15380
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TSFTXHex Machine BoltGrade AZinc/Clear5/16-18 x 1 1/4hex hd bolt a307 grade a coarse zinc cr+3(ft) 5/16-18 x 1 1/4 unc1800
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JET FITTINGCAHex Machine BoltGrade AZinc/Clear5/16-18 x 5/8bolt hex 5/1618x5/8 a307 steel zinc plated b18.2.1346
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JET FITTINGCAHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 5/8bolt hex 5/1618x5/8 stainless steel b18.2.1100
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JET FITTINGCAHex Machine BoltGrade 5Zinc/Clear5/16-18 x 5/8bolt hex 5/1618x5/8 grade 5 steel zinc plated b18.2.1615
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JET FITTINGCAHex Machine BoltSteelBlack Oxide5/16-18 x 3/4bolt hex 5/16-18x3/4 steel black oxide b18.2.11050
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JET FITTINGCAHex Machine BoltGrade AZinc/Clear5/16-18 x 3/45/16-18x3/4 (pt) hex bolt steel a307 zinc plated b18.2.1500
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JET FITTINGCAHex Machine BoltSteelZinc/Clear5/16-18 x 3/4bolt hex 5/1618x3/4 steel zinc plated standard patch lock b18.2.14000
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JET FITTINGCAHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 3/4bolt hex 5/1618x3/4 stainless steel b18.2.1500
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JET FITTINGCAHex Machine BoltGrade 5Zinc/Clear5/16-18 x 3/4bolt hex 5/1618x3/4 grade 5 steel zinc plated b18.2.150
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JET FITTINGCAHex Machine BoltGrade AZinc/Clear5/16-18 x 7/8bolt hex 5/1618x7/8 a307 steel zinc plated b18.2.1559
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JET FITTINGCAHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 7/8bolt hex 5/1618x7/8 stainless steel b18.2.1275
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JET FITTINGCAHex Machine BoltGrade 5Zinc/Clear5/16-18 x 7/8bolt hex 5/1618x7/8 grade 5 steel zinc plated b18.2.133
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JET FITTINGCAHex Machine BoltGrade 8Zinc/Yellow5/16-18 x 7/8bolt hex 5/1618x7/8 grade 8 steel zinc plated yellow b18.2.1100
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JET FITTINGCAHex Machine BoltGrade AZinc/Clear5/16-18 x 15/16-18x1 (pt) hex bolt steel a307 zinc plated b18.2.1950
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JET FITTINGCAHex Machine Bolt316, 317, A4 StainlessPlain5/16-18 x 1bolt hex 5/1618x1 stainless steel316 b18.2.1200
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JET FITTINGCAHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 1bolt hex 5/1618x1 stainless steel b18.2.11030
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JET FITTINGCAHex Machine BoltGrade 5Zinc/Clear5/16-18 x 1bolt hex 5/1618x1 grade 5 steel zinc plated b18.2.1920
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JET FITTINGCAHex Machine BoltGrade 8Zinc/Yellow5/16-18 x 1bolt hex 5/1618x1 gr8 steel zinc plated yellow b18.2.1300
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JET FITTINGCAHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/16-18 x 1 1/4bolt hex 5/1618x1-1/4 stainless steel b18.2.1550
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JET FITTINGCAHex Machine BoltGrade 5Zinc/Clear5/16-18 x 1 1/4bolt hex 5/1618x1-1/4 grade 5 steel zinc plated b18.2.150
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JET FITTINGCAHex Machine BoltGrade 8Zinc/Yellow5/16-18 x 1 1/4bolt hex 5/1618x1-1/4 grade 8 zinc plated yellow b18.2.1900
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CNBILHex Machine BoltSuperalloy (Inconel, Hastelloy, Alloy 20)Plain5/16-18 x 2hex m/b inconel 601 finish1
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CNBILHex Machine BoltSuperalloy (Inconel, Hastelloy, Alloy 20)Plain5/16-18 x 3hex m/b inconel 601 finish1
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JET FITTINGCAHex Machine BoltGrade AZinc/Black5/16-18 x 3/4bolt hex 5/16-18x3/4 steel a307 zinc plated black b18.2.1200
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JET FITTINGCAHex Machine BoltSteelZinc/Black5/16-18 x 1bolt hex 5/16-18x1 steel zinc plated black b18.2.1300
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JET FITTINGCAHex Machine BoltGrade 5Zinc/Clear5/16-18 x 1 5/8bolt hex 5/1618x1-5/8 grade 5 steel zinc plated b18.2.1785
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JET FITTINGCAHex Machine BoltSteelZinc/Clear5/16-18 x 1 3/4bolt hex 5/16-18x1-3/4 steel zinc b18.2.1581
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