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4 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 BoltGrade APlain1-8 x 4 1/21-8 x 4 1/2 hex bolt a307a b18.2.112
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BHAMALHex Machine BoltSteelGalvanized1 1/8-7 x 4 1/21 1/8-7x4 1/2 a325 hvy bolt ft hdg b18.2.123
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BHAMALHex Machine BoltGrade BPlain3/4-10 x 4 1/23/4-10x4 1/2 hvy hex bolt a307 gr b b18.2.1360
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BHAMALHex Machine BoltSteelPlain1 1/2-6 x 4 1/21 1/2-6x4 1/2 hex bolt b18.2.160
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BHAMALHex Machine BoltGrade AZinc/Clear7/8-9 x 4 1/27/8-9x4 1/2 hex bolt a307 zn b18.2.111
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BHAMALHex Machine BoltSteelGalvanized1-8 x 4 1/21-8x4 1/2 a325 hvy bolt dom. mechgalv b18.2.1481
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AbabaCAHex Machine BoltSteelZinc/Clear1-8 x 4 1/21-8 x 4 1/2 hex bolt stl znc b18.2.140
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AbabaCAHex Machine BoltSteelZinc/Clear1/4-20 x 4 1/21/4-20 x 4 1/2 hex bolt stl znc b18.2.1907
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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 BoltSteelGalvanized3/8-16 x 4 1/23/8-16 x 4 1/2 hex bolt stl hdg b18.2.1300
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AbabaCAHex Machine BoltSteelZinc/Clear3/8-16 x 4 1/23/8-16 x 4 1/2 hex bolt stl znc b18.2.1625
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AbabaCAHex Machine BoltSteelGalvanized1/2-13 x 4 1/21/2-13 x 4 1/2 hex bolt stl hdg b18.2.1396
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AbabaCAHex Machine BoltSteelZinc/Clear1/2-13 x 4 1/21/2-13 x 4 1/2 hex bolt stl znc b18.2.1246
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AbabaCAHex Machine BoltSteelGalvanized5/8-11 x 4 1/25/8-11 x 4 1/2 hex bolt stl hdg b18.2.165
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AbabaCAHex Machine BoltSteelPlain5/8-11 x 4 1/25/8-11 x 4 1/2 hex bolt stl pln b18.2.140
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AbabaCAHex Machine BoltSteelZinc/Clear5/8-11 x 4 1/25/8-11 x 4 1/2 hex bolt stl znc b18.2.156
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AbabaCAHex Machine BoltSteelPlain3/4-10 x 4 1/23/4-10 x 4 1/2 hex bolt stl pln b18.2.110
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AbabaCAHex Machine BoltSteelZinc/Clear3/4-10 x 4 1/23/4-10 x 4 1/2 hex bolt stl znc b18.2.147
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AbabaCAHex Machine BoltSteelZinc/Clear7/8-9 x 4 1/27/8-9 x 4 1/2 hex bolt stl znc b18.2.141
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GLFOHHex Machine BoltGrade AZinc/Clear1/4-20 x 4 1/21/4-20x4-1/2 hex hd bolt a307 stl zc b18.2.1 () () ()70
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GLFOHHex Machine BoltGrade AZinc/Clear3/4-10 x 4 1/23/4-10x4-1/2 hex hd bolt a307 stl zc b18.2.1 () () ()80
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GLFOHHex Machine BoltGrade AGalvanized3/8-16 x 4 1/23/8-16x4-1/2 hex hd bolt a307 stl hdg b18.2.1 () () ()29
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GLFOHHex Machine BoltGrade APlain3/4-10 x 4 1/23/4-10x4-1/2 hex hd bolt a307 stl pln b18.2.1 () () ()235
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GLFOHHex Machine BoltGrade AGalvanized1/2-13 x 4 1/21/2-13x4-1/2 hex hd bolt a307 stl hdg b18.2.1 () () ()67
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GLFOHHex Machine BoltGrade APlain1-8 x 4 1/21-8x4-1/2 hex hd bolt a307 stl pln b18.2.1 () () ()8
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AbabaCAHex Machine BoltSteelZinc/Clear1/4-20 x 4 1/21/4-20 x 4 1/2 hex bolt stl znc b18.2.1300
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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 BoltSteelGalvanized3/8-16 x 4 1/23/8-16 x 4 1/2 hex bolt stl hdg b18.2.1150
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AbabaCAHex Machine BoltSteelZinc/Clear3/8-16 x 4 1/23/8-16 x 4 1/2 hex bolt stl znc b18.2.1100
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AbabaCAHex Machine BoltSteelGalvanized1/2-13 x 4 1/21/2-13 x 4 1/2 hex bolt stl hdg b18.2.150
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AbabaCAHex Machine BoltSteelGalvanized5/8-11 x 4 1/25/8-11 x 4 1/2 hex bolt stl hdg b18.2.115
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AbabaCAHex Machine BoltSteelZinc/Clear5/8-11 x 4 1/25/8-11 x 4 1/2 hex bolt stl znc b18.2.120
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AbabaCAHex Machine BoltSteelZinc/Clear3/4-10 x 4 1/23/4-10 x 4 1/2 hex bolt stl znc b18.2.120
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SIIINHex Machine BoltGrade AZinc/Clear3/8-16 x 4 1/23/8-16 x 4-1/2 astm a307 grade a zinc finish hex bolt b18.2.1175
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Wink FastVAHex Machine Bolt316, 317, A4 StainlessPlain7/8-9 x 4 1/2316l ss (s31603) hex bolt 7/8-9x4-1/2 per asme b18.2.17
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Wink FastVAHex Machine Bolt316, 317, A4 StainlessPlain3/4-10 x 4 1/2316l stainless steel (s31603) hex bolt 3/4-10x4-1/2 per asme b18.2.120
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JET FITTINGCAHex Machine BoltGrade AGalvanized3/8-16 x 4 1/23/8-16x4 1/2 hex bolt a307 gr a hdg 495042 b18.2.150
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JET FITTINGCAHex Machine BoltGrade AZinc/Clear5/16-18 x 4 1/25/16-18x4 1/2 hex bolt a307 gr a zn 494039 b18.2.1200
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JET FITTINGCAHex Machine BoltGrade AZinc/Clear3/8-16 x 4 1/23/8-16x4 1/2 hex bolt a307 gr a zn 494060 b18.2.186
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JET FITTINGCAHex Machine BoltGrade AGalvanized5/8-11 x 4 1/25/8-11x4 1/2 hex bolt a307 gr a hdg 495092 b18.2.15
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JET FITTINGCAHex Machine BoltGrade AGalvanized1/2-13 x 4 1/21/2-13x4 1/2 hex bolt a307 gr a hdg 495063 b18.2.125
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JET FITTINGCAHex Machine BoltGrade AZinc/Clear1/2-13 x 4 1/21/2-13x4 1/2 hex bolt a307 gr a zn 494096 b18.2.1110
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JET FITTINGCAHex Machine BoltGrade AZinc/Clear1/4-20 x 4 1/21/4-20x4 1/2 hex bolt a307 gr a zn 494018 b18.2.1700
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StandardMAHex Machine BoltSteelGalvanized5/8-11 x 4 1/25/8-11x4-1/2 machine bolt galvanized b18.2.124
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QFCTXHex Machine BoltGrade 5Galvanized3/8 x 4 1/2.375x4.50 grade 5 hdg hex bolt nut&lw b18.2.12
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QFCTXHex Machine BoltSteelZinc/Clear1 1/4-7 x 4 1/21 1/4-7x4 1/2 hex bolt zinc b18.2.116
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BHAMGAHex Machine Bolt316, 317, A4 StainlessPlain3/4-10 x 4 1/23/4-10x4 1/2 316 fin hex bolt b18.2.11200
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BHAMGAHex Machine BoltSuperalloy (Inconel, Hastelloy, Alloy 20)Plain5/8-11 x 4 1/25/8-11x4 1/2 hastelloy c276 hex bolt-ft b18.2.133
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BHAMGAHex Machine BoltSuperalloy (Inconel, Hastelloy, Alloy 20)Plain1-8 x 4 1/21-8x4 1/2 hastelloy c276 hex bolt-ft b18.2.118
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BHAMGAHex Machine BoltGrade BPlain1 1/8-8 x 4 1/21 1/8-8x4 1/2 a193 grade b16 hex bolt b18.2.181
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BHAMGAHex Machine BoltGrade BPlain1-8 x 4 1/21-8x4 1/2 a307b hex bolt b18.2.1900
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QFCTXHex Machine BoltGrade AZinc/Clear3/8-16 x 4 1/23/8-16 x 4 1/2 hex bolt gr a307 zinc b18.2.1660
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QFCTXHex Machine BoltSteelGalvanized5/8-11 x 4 1/25/8-11 x 4 1/2 hex machine bolt hdg b18.2.156
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JET FITTINGCAHex Machine BoltGrade AZinc/Clear5/16-18 x 4 1/2bolt hex 5/16-18x4-1/2 steel a307 zinc plated b18.2.1300
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JET FITTINGCAHex Machine BoltGrade AZinc/Clear3/8-16 x 4 1/2bolt hex 3/816x4 1/2 a307 steel zinc plated b18.2.1584
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JET FITTINGCAHex Machine BoltGrade 5Zinc/Clear1/2-13 x 4 1/2bolt hex 1/213x4-1/2 grade 5 steel zinc plated b18.2.155
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JET FITTINGCAHex Machine BoltGrade 5Zinc/Clear1/2-13 x 4 1/2bolt hex 1/213x4-1/2 grade 5 steel zinc plated b18.2.125
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JET FITTINGCAHex Machine BoltGrade AZinc/Clear1/4-20 x 4 1/2bolt hex 1/420x4-1/2 a307 steel zinc plated b18.2.175
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JET FITTINGCAHex Machine BoltGrade AGalvanized3/8-16 x 4 1/23/8-16x4-1/2 (pt) hex bolt steel a307 hot dip galvanized b18.2.1300
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JET FITTINGCAHex Machine BoltGrade AGalvanized1/2-13 x 4 1/21/2-13x4-1/2 (pt) hex bolt steel a307 hot dip galvanized b18.2.1150
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NBSILHex Machine BoltGrade AZinc/Clear1/4-20 x 4 1/21/4-20 x 4-1/2 307a hex machine bolt zinc b18.2.124.5
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NBSILHex Machine BoltGrade AZinc/Clear5/16-18 x 4 1/25/16-18 x 4-1/2 307a hex machine bolt zinc b18.2.11.6
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NBSILHex Machine BoltGrade AZinc/Clear3/8-16 x 4 1/23/8-16 x 4-1/2 307a hex machine bolt zinc b18.2.112.9
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NBSILHex Machine BoltGrade AZinc/Clear1/2-13 x 4 1/21/2-13 x 4-1/2 307a hex machine bolt zinc b18.2.14.32
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NBSILHex Machine BoltGrade AZinc/Clear5/8-11 x 4 1/25/8-11 x 4-1/2 307a hex machine bolt zinc b18.2.12.3
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NBSILHex Machine BoltGrade AZinc/Clear3/4-10 x 4 1/23/4-10 x 4-1/2 307a hex machine bolt zinc b18.2.11.84
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JET FITTINGCAHex Machine BoltGrade 8Zinc/Yellow3/4-10 x 4 1/2bolt hex 3/410x4-1/2 grade 8 steel zinc plated yellow b18.2.130
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JET FITTINGCAHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain7/8-14 x 4 1/2bolt hex 7/814x4-1/2 stainless steel b18.2.115
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JET FITTINGCAHex Machine BoltGrade 2Zinc/Clear1/2-13 x 4 1/2bolt hex 1/213x4-1/2 grade 2 steel zinc plated b18.2.14
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THRDFASTFLHex Machine BoltGrade AGalvanized1/4-20 x 4 1/2a307a h/b hdg b18.2.1442
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THRDFASTFLHex Machine BoltGrade AGalvanized1-8 x 4 1/2a307a h/b hdg b18.2.168
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THRDFASTFLHex Machine BoltGrade AGalvanized1 1/8-7 x 4 1/2a307a h/b hdg b18.2.18
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THRDFASTOKHex Machine BoltGrade AGalvanized1/2-13 x 4 1/2a307a h/b hdg b18.2.19
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THRDFASTALHex Machine BoltGrade AGalvanized1 1/2-6 x 4 1/2a307a h/b hdg b18.2.15
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THRDFASTMSHex Machine BoltGrade AGalvanized1/4-20 x 4 1/2a307a h/b hdg b18.2.150
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KBSTNHex Machine BoltGrade 2Plain7/8-9 x 4 1/27/8-9 x 4 1/2 hex bolt 307a orgr2 b18.2.1420
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THRDFASTALHex Machine BoltGrade AGalvanized3/8-16 x 4 1/2a307a h/b hdg b18.2.11110
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THRDFASTALHex Machine BoltGrade AGalvanized1/2-13 x 4 1/2a307a h/b hdg b18.2.17952
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THRDFASTALHex Machine BoltGrade AGalvanized5/8-11 x 4 1/2a307a h/b hdg b18.2.18000
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THRDFASTALHex Machine BoltGrade AGalvanized3/4-10 x 4 1/2a307a h/b hdg b18.2.11580
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THRDFASTALHex Machine BoltGrade AGalvanized7/8-9 x 4 1/2a307a h/b hdg b18.2.11032
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THRDFASTALHex Machine BoltGrade AGalvanized1 1/8-7 x 4 1/2a307a h/b hdg b18.2.125
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THRDFASTOKHex Machine BoltGrade AGalvanized5/8-11 x 4 1/2a307a h/b hdg domestic b18.2.11
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THRDFASTOKHex Machine BoltGrade AGalvanized5/16-18 x 4 1/2a307a h/b hdg b18.2.1101
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THRDFASTALHex Machine BoltGrade AGalvanized7/8-9 x 4 1/2a307a h/b hdg b18.2.16
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THRDFASTOKHex Machine BoltGrade AGalvanized3/4-10 x 4 1/2a307a h/b hdg b18.2.19
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All SizeTXHex Machine BoltGrade BPlain1 1/8-8 x 4 1/21 1/8-8 x 4 1/2 hex bolt gr. b7 plain b18.2.119
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All SizeTXHex Machine BoltGrade 5Plain7/16-20 x 4 1/27/16-20 x 4 1/2 gr. 5 hex bolt b18.2.125
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All SizeTXHex Machine BoltGrade 2Plain3/8-16 x 4 1/23/8-16 x 4 1/2 grade 2 hex bolt b18.2.1242
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All SizeTXHex Machine BoltGrade 5Plain1 1/4-7 x 4 1/21 1/4-7 x 4 1/2 gr. 5 hex bolt b18.2.132
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All SizeTXHex Machine BoltGrade 8Plain2-4 1/2 x 4 1/22-4.5 x 4 1/2 gr. 8 hex bolt b18.2.14
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All SizeTXHex Machine BoltGrade 8Plain1 1/4-7 x 4 1/21 1/4-7 x 4 1/2 gr. 8 hex bolt plain b18.2.19
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All SizeTXHex Machine BoltGrade 5Plain1/4-20 x 4 1/21/4-20 x 4 1/2 gr. 5 hex bolt b18.2.157
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All SizeTXHex Machine BoltGrade 5Plain7/16-14 x 4 1/27/16-14 x 4 1/2 gr. 5 hex bolt b18.2.1125
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All SizeTXHex Machine BoltGrade 8Plain1 1/8-7 x 4 1/21 1/8-7 x 4 1/2 gr. 8 hex bolt plain b18.2.110
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All SizeTXHex Machine BoltGrade 5Plain9/16-12 x 4 1/29/16-12 x 4 1/2 gr. 5 hex bolt b18.2.1178
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All SizeTXHex Machine BoltGrade 8Plain3/4-10 x 4 1/23/4-10 x 4 1/2 gr. 8 hex bolt w/ 1/8 drilled hole in head b18.2.1144
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All SizeTXHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain7/16-14 x 4 1/27/16-14 x 4 1/2 hex bolt s/s b18.2.187
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All SizeTXHex Machine BoltGrade 8Plain7/8-9 x 4 1/27/8-9 x 4 1/2 gr. 8 hex bolt plain b18.2.157
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All SizeTXHex Machine BoltGrade 8Plain1/4-28 x 4 1/21/4-28 x 4 1/2 gr. 8 hex bolt b18.2.1334
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OptimasILHex Machine BoltSteelPlain1/2-20 x 4 1/21/2-20 x 4-1/2 asme b18.2.1 hex bolt1,000
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OptimasILHex Machine BoltSteelPlain1/2-20 x 4 1/21/2-20 x 4-1/2 asme b18.2.1 hex bolt1,000
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OptimasILHex Machine BoltSteelPlain1/2-20 x 4 1/21/2-20 x 4-1/2 asme b18.2.1 hex machine bolt1000
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