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3 1/2 inch length Hex Bolts (ASME B18. 2.1)

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

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SupplierLocTypeMaterialFinishSizeDescriptionQty 
BHAMALHex Machine BoltSteelGalvanized3/4-10 x 3 1/23/4-10x3-1/2 hex tower bolt a394 hdg b18.2.120
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BHAMALHex Machine BoltSteelPlain5/8-11 x 3 1/25/8-11x3 1/2 a490 hvy hex bolt b18.2.127
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BHAMALHex Machine BoltGrade BZinc/Clear7/8-9 x 3 1/27/8-9 x 3 1/2 hvy hex bolt a307 gr b zn b18.2.164
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BHAMALHex Machine BoltSteelPlain1 1/4-7 x 3 1/21 1/4-7x3 1/2 a325 hvy bolt dom. b18.2.17
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GLFOHHex Machine BoltGrade AZinc/Clear3/8-16 x 3 1/23/8-16x3-1/2 hex hd bolt a307 stl zc b18.2.1 () () ()221
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GLFOHHex Machine BoltGrade AGalvanized5/16-18 x 3 1/25/16-18x3-1/2 hex hd bolt a307 stl hdg b18.2.1 () () ()725
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GLFOHHex Machine BoltGrade AZinc/Clear5/8-11 x 3 1/25/8-11x3-1/2 hex hd bolt a307 stl zc b18.2.1 () () ()106
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GLFOHHex Machine BoltGrade AGalvanized1/2-13 x 3 1/21/2-13x3-1/2 hex hd bolt a307 stl hdg b18.2.1 () () ()250
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GLFOHHex Machine BoltGrade APlain5/8-11 x 3 1/25/8-11x3-1/2 hex hd bolt a307 stl pln b18.2.1 () () ()17
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BHAMALHex Machine BoltGrade AZinc/Clear5/8-11 x 3 1/25/8-11x3 1/2 hex bolt a307 zinc b18.2.187
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GLFOHHex Machine BoltGrade APlain3/4-10 x 3 1/23/4-10x3-1/2 hex hd bolt a307 stl pln b18.2.1 () () ()10
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GLFOHHex Machine BoltSteelGalvanized3/8-16 x 3 1/23/8-16x3-1/2 hex mach bolt stl hdg b18.2.1 () () ()453
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GLFOHHex Machine BoltGrade B7Plain1/2-13 x 3 1/21/2-13x3-1/2 fin hex hd bolt b-7 stl pln b18.2.1 () () ()175
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AbabaCAHex Machine BoltSteelGalvanized1-8 x 3 1/21-8 x 3 1/2 hex bolt stl hdg b18.2.116
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AbabaCAHex Machine BoltSteelZinc/Clear1-8 x 3 1/21-8 x 3 1/2 hex bolt stl znc b18.2.115
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AbabaCAHex Machine BoltSteelZinc/Clear1/4-20 x 3 1/21/4-20 x 3 1/2 hex bolt stl znc b18.2.1821
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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 BoltSteelGalvanized3/8-16 x 3 1/23/8-16 x 3 1/2 hex bolt stl hdg b18.2.1200
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AbabaCAHex Machine BoltSteelZinc/Clear3/8-16 x 3 1/23/8-16 x 3 1/2 hex bolt stl znc b18.2.1119
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AbabaCAHex Machine BoltSteelGalvanized1/2-13 x 3 1/21/2-13 x 3 1/2 hex bolt stl hdg b18.2.1160
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AbabaCAHex Machine BoltSteelZinc/Clear1/2-13 x 3 1/21/2-13 x 3 1/2 hex bolt stl znc b18.2.1199
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AbabaCAHex Machine BoltSteelGalvanized5/8-11 x 3 1/25/8-11 x 3 1/2 hex bolt stl hdg b18.2.164
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AbabaCAHex Machine BoltSteelZinc/Clear5/8-11 x 3 1/25/8-11 x 3 1/2 hex bolt stl znc b18.2.1151
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AbabaCAHex Machine BoltSteelGalvanized3/4-10 x 3 1/23/4-10 x 3 1/2 hex bolt stl hdg b18.2.164
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AbabaCAHex Machine BoltSteelZinc/Clear3/4-10 x 3 1/23/4-10 x 3 1/2 hex bolt stl znc b18.2.1320
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AbabaCAHex Machine BoltSteelPlain7/8-9 x 3 1/27/8-9 x 3 1/2 hex bolt stl pln b18.2.16
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AbabaCAHex Machine BoltSteelZinc/Clear7/8-9 x 3 1/27/8-9 x 3 1/2 hex bolt stl znc b18.2.1145
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AbabaCAHex Machine BoltSteelZinc/Clear1 1/8-7 x 3 1/21 1/8-7 x 3 1/2 hex bolt stl znc b18.2.130
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AbabaCAHex Machine BoltSteelZinc/Clear1/4-20 x 3 1/21/4-20 x 3 1/2 hex bolt stl znc b18.2.1200
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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 BoltSteelGalvanized3/8-16 x 3 1/23/8-16 x 3 1/2 hex bolt stl hdg b18.2.150
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AbabaCAHex Machine BoltSteelZinc/Clear3/8-16 x 3 1/23/8-16 x 3 1/2 hex bolt stl znc b18.2.1300
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AbabaCAHex Machine BoltSteelGalvanized1/2-13 x 3 1/21/2-13 x 3 1/2 hex bolt stl hdg b18.2.150
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Alma BoltMIHex Machine BoltGrade 2Zinc/Clear1/4-20 x 3 1/21/4-20 x 3 1/2 hex hd blt gr2 zp b18.2.14025
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SIIINHex Machine BoltGrade AZinc/Clear3/8-16 x 3 1/23/8-16 x 3-1/2 astm a307 grade a zinc finish hex bolt b18.2.125
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Wink FastVAHex Machine Bolt316, 317, A4 StainlessPlain5/8-11 x 3 1/2316l ss (s31603) hex bolt 5/8-11x3-1/2 per asme b18.2.140
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JET FITTINGCAHex Machine BoltGrade AZinc/Clear5/16-18 x 3 1/25/16-18x3 1/2 hex bolt a307 gr a zn 494036 b18.2.1315
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JET FITTINGCAHex Machine BoltGrade AZinc/Clear1/4-20 x 3 1/21/4-20x3 1/2 hex bolt a307 gr a zn 494015 b18.2.14094
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JET FITTINGCAHex Machine BoltGrade AGalvanized1/2-13 x 3 1/21/2-13x3 1/2 hex bolt a307 gr a hdg 495061 b18.2.1250
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JET FITTINGCAHex Machine BoltGrade AGalvanized5/16-18 x 3 1/25/16-18x3 1/2 hex bolt a307 gr a hdg 495023 b18.2.1150
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StandardMAHex Machine BoltSteelGalvanized3/4-10 x 3 1/23/4-10x3-1/2 machine bolt galvanized b18.2.143
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QFCTXHex Machine BoltASTM A449Galvanized1/2-13 x 3 1/21/2-13x3 hex head bolt a449 hdg 1 1/2 thd b18.2.123
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B & K FASTPAHex Machine BoltGrade B7Zinc/Clear1/2-13 x 3 1/21/2-13 x 3 1/2 a193 b7 hex bolts zinc b18.2.18
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BHAMGAHex Machine BoltDuplex Stainless (2205, Ferralium etc.)Plain3/4-10 x 3 1/23/4-10x3 1/2 z100 super duplex stainless hex bolt std thread b18.2.14
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BHAMGAHex Machine BoltSuperalloy (Inconel, Hastelloy, Alloy 20)Plain5/8-11 x 3 1/25/8-11x3 1/2 hastelloy c276 hex bolt-ft b18.2.166
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BHAMGAHex Machine BoltSuperalloy (Inconel, Hastelloy, Alloy 20)Plain5/8-11 x 3 1/25/8-11x3 1/2 hastelloy c276 hex bolt-ft b18.2.127
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BHAMGAHex Machine BoltSuperalloy (Inconel, Hastelloy, Alloy 20)Plain5/8-11 x 3 1/25/8-11x3 1/2 hastelloy c276 hex bolt-ft b18.2.116
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BHAMGAHex Machine BoltSuperalloy (Inconel, Hastelloy, Alloy 20)Plain5/8-11 x 3 1/25/8-11x3-1/2 hastelloy c276 hex bolt-ft b18.2.12
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BHAMGAHex Machine BoltSuperalloy (Inconel, Hastelloy, Alloy 20)Plain5/8-11 x 3 1/25/8-11x3-1/2 hastelloy c276 hex bolt-ft b18.2.17
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OSSCORIHex Machine BoltGrade BPlain3/4-10 x 3 1/23/4-10x3 1/2 a307 gr b bolt b18.2.194
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OSSCORIHex Machine BoltGrade BZinc/Clear3/4-10 x 3 1/23/4-10x3 1/2 a307 gr b bolt plated b18.2.1256
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QFCTXHex Machine BoltSteelPlain1 1/8 x 3 1/21 1/8x3 1/2nc plain #2 hex blt b18.2.11305
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QFCTXHex Machine BoltGrade 5Galvanized3/4-10 x 3 1/23/4-10 x 3 1/2 hex head bolt gr. 5 hdg b18.2.110
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QFCTXHex Machine BoltASTM A449Galvanized7/8-9 x 3 1/27/8-9 x 3 1/2 hex head bolt a449 hdg b18.2.14
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JET FITTINGCAHex Machine BoltGrade 2Zinc/Clearx 3 1/2bolt hex 1-1/8 12x3-1/2 grade 2 steel zinc plated b18.2.128
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JET FITTINGCAHex Machine BoltSteelZinc/Clear5/16-18 x 3 1/2bolt hex 5/16-18x3-1/2 steel zinc plated b18.2.185
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JET FITTINGCAHex Machine BoltGrade 5Zinc/Clear5/16-18 x 3 1/2bolt hex 5/1618x3-1/2 grade 5 steel zinc plated b18.2.1350
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JET FITTINGCAHex Machine BoltGrade 8Zinc/Yellow5/16-18 x 3 1/2bolt hex 5/1618x3-1/2 grade 8 steel zinc plated yellow b18.2.1230
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JET FITTINGCAHex Machine BoltGrade 2Zinc/Clear1/2-13 x 3 1/21/2-13x3-1/2 hex bolt steel grade-2 zinc b18.2.150
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JET FITTINGCAHex Machine BoltGrade 8Zinc/Yellow1/2-13 x 3 1/2bolt hex 1/213x3-1/2 grade 8 steel zinc plated yellow b18.2.150
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JET FITTINGCAHex Machine BoltGrade AZinc/Clear1/4-20 x 3 1/2bolt hex 1/4-20x3-1/2 steel a307 zinc plated b18.2.125
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JET FITTINGCAHex Machine BoltGrade AZinc/Clear1/2-13 x 3 1/21/2-13x3 1/2 (pt) bolts hex bolts a307 grade a hex bolt zinc cr+3 (inch) b18.2.125
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JET FITTINGCAHex Machine BoltGrade AGalvanized1/4-20 x 3 1/21/4-20x3 1/2 (pt) bolts hex bolts a307 grade a hex bolt hdg (inch) b18.2.150
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NBSILHex Machine BoltGrade AZinc/Clear1/4-20 x 3 1/21/4-20 x 3-1/2 307a hex machine bolt zinc b18.2.112.6
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NBSILHex Machine BoltGrade AZinc/Clear3/8-16 x 3 1/23/8-16 x 3-1/2 307a hex machine bolt zinc b18.2.12.25
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NBSILHex Machine BoltGrade AZinc/Clear5/16-18 x 3 1/25/16-18 x 3-1/2 307a hex machine bolt zinc b18.2.17.2
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NBSILHex Machine BoltGrade AZinc/Clear7/16-14 x 3 1/27/16-14 x 3-1/2 307a hex machine bolt zinc b18.2.12.25
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NBSILHex Machine BoltGrade AZinc/Clear1/2-13 x 3 1/21/2-13 x 3-1/2 307a hex machine bolt zinc b18.2.12.25
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NBSILHex Machine BoltGrade AZinc/Clear5/8-11 x 3 1/25/8-11 x 3-1/2 307a hex machine bolt zinc b18.2.10.8
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JET FITTINGCAHex Machine BoltGrade 2Zinc/Clear5/8-11 x 3 1/2bolt hex 5/8-11x3-1/2 grade 2 steel zinc plated b18.2.161
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JET FITTINGCAHex Machine BoltGrade 5Zinc/Yellow5/8-11 x 3 1/2bolt hex 5/8-11x3-1/2 grade 5 steel zinc plated yellow b18.2.150
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JET FITTINGCAHex Machine BoltGrade 2Zinc/Clear3/8-16 x 3 1/2bolt hex 3/816x3-1/2 grade 2 steel zinc plated b18.2.166
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THRDFASTFLHex Machine BoltGrade AGalvanized1/4-20 x 3 1/2a307a h/b hdg b18.2.1454
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THRDFASTFLHex Machine BoltGrade AGalvanized7/8-9 x 3 1/2a307a h/b hdg b18.2.1100
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THRDFASTFLHex Machine BoltGrade AGalvanized1-8 x 3 1/2a307a h/b hdg b18.2.128
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THRDFASTFLHex Machine BoltGrade AGalvanized3/8-16 x 3 1/2a307a h/b hdg b18.2.119
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THRDFASTOKHex Machine BoltGrade AGalvanized5/8-11 x 3 1/2a307a h/b hdg b18.2.19
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THRDFASTTNHex Machine BoltGrade AGalvanized1-8 x 3 1/2a307a h/b hdg b18.2.112
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THRDFASTALHex Machine BoltGrade AGalvanized1/4-20 x 3 1/2a307a h/b hdg b18.2.1754
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THRDFASTMSHex Machine BoltGrade AGalvanized1 1/8-7 x 3 1/2a307a h/b hdg b18.2.13
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THRDFASTMSHex Machine BoltGrade AGalvanized5/16-18 x 3 1/2a307a h/b hdg b18.2.1450
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THRDFASTALHex Machine BoltGrade AGalvanized1/2-13 x 3 1/2a307a h/b hdg b18.2.118335
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THRDFASTALHex Machine BoltGrade AGalvanized5/8-11 x 3 1/2a307a h/b hdg b18.2.1961
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THRDFASTALHex Machine BoltGrade AGalvanized3/4-10 x 3 1/2a307a h/b hdg b18.2.11400
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THRDFASTOKHex Machine BoltGrade AGalvanized7/8-9 x 3 1/2a307a h/b hdg b18.2.111
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THRDFASTALHex Machine BoltGrade AGalvanized1 1/4-7 x 3 1/2a307a h/b hdg b18.2.112
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THRDFASTALHex Machine BoltGrade AGalvanized5/16-18 x 3 1/2a307a h/b hdg b18.2.1104
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THRDFASTMSHex Machine BoltGrade AGalvanized7/8-9 x 3 1/2a307a h/b hdg b18.2.15
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THRDFASTOKHex Machine BoltGrade AGalvanized1-8 x 3 1/2a307a h/b hdg domestic b18.2.13
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All SizeTXHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain7/8-9 x 3 1/27/8-9 x 3 1/2 hex bolt s/s b18.2.135
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All SizeTXHex Machine BoltGrade AGalvanized3/8-16 x 3 1/23/8-16 x 3 1/2 a307 hex bolt galv b18.2.1416
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All SizeTXHex Machine BoltGrade 5Plain7/16-20 x 3 1/27/16-20 x 3 1/2 gr. 5 hex bolt b18.2.125
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All SizeTXHex Machine BoltGrade AGalvanized3/4 x 3 1/23/4 x 3-1/2 hex bolt a307 galv b18.2.16
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All SizeTXHex Machine BoltGrade 8Plain9/16-18 x 3 1/29/16-18 x 3 1/2 gr. 8 hex bolt b18.2.177
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All SizeTXHex Machine BoltGrade 8Plain3/8-24 x 3 1/23/8-24 x 3 1/2 gr. 8 hex bolt b18.2.1180
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All SizeTXHex Machine BoltGrade 8Plain5/16-18 x 3 1/25/16-18 x 3 1/2 gr. 8 hex bolt domestic b18.2.191
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All SizeTXHex Machine BoltGrade 8Plain1/4-20 x 3 1/21/4-20 x 3 1/2 gr. 8 hex bolt domestic b18.2.1590
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All SizeTXHex Machine BoltGrade 8Plain1 1/8-7 x 3 1/21 1/8-7 x 3 1/2 gr. 8 hex bolt b18.2.117
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All SizeTXHex Machine BoltGrade 5Plain1-14 x 3 1/21-14 x 3 1/2 gr. 5 hex bolt b18.2.110
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All SizeTXHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1-8 x 3 1/21-8 x 3 1/2 hex bolt s/s b18.2.151
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All SizeTXHex Machine BoltGrade 5Plain7/8-14 x 3 1/27/8-14 x 3 1/2 gr. 5 hex bolt b18.2.140
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All SizeTXHex Machine BoltGrade 8Plain5/16-24 x 3 1/25/16-24 x 3 1/2 gr. 8 hex bolt b18.2.1344
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All SizeTXHex Machine BoltGrade 5Plain1 1/2-6 x 3 1/21 1/2-6 x 3 1/2 gr. 5 hex bolt b18.2.124
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All SizeTXHex Machine BoltGrade 8Plain3/4-16 x 3 1/23/4-16 x 3 1/2 gr. 8 hex bolt plain b18.2.114
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