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3 1/4 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 
GLFOHHex Machine BoltGrade AZinc/Clear3/4-10 x 3 1/43/4-10x3-1/4 hex hd bolt a307 stl zc b18.2.1 () () ()104
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GLFOHHex Machine BoltGrade APlain3/4-10 x 3 1/43/4-10x3-1/4 hex hd bolt a307 stl pln b18.2.1 () () ()347
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BHAMALHex Machine BoltGrade B7Plain3/4-10 x 3 1/43/4-10x3 1/4 hvy hex bolt a193-b7 b18.2.18
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BHAMALHex Machine BoltSteelPlain1-8 x 3 1/41-8x3 1/4 a490 hvy hex bolt ft b18.2.14
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BHAMALHex Machine BoltSteelPlain5/8-11 x 3 1/45/8-11x3 1/4 a325 hvy bolt dom. pln b18.2.1101
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BHAMALHex Machine BoltGrade AGalvanized1/2-13 x 3 1/41/2-13x3 1/4 hex bolt a307 hdg b18.2.175
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BHAMALHex Machine BoltSteelPlain1-8 x 3 1/41-8x3 1/4 a490 hvy hex bolt b18.2.1113
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BHAMALHex Machine BoltSteelPlain1-8 x 3 1/41-8x3 1/4 a490 hvy hex bolt dom. ty 3 b18.2.143
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GLFOHHex Machine BoltGrade AZinc/Clear1/4-20 x 3 1/41/4-20x3-1/4 hex hd bolt a307 stl zc b18.2.1 () () ()437
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GLFOHHex Machine BoltGrade B7Plain3/4-10 x 3 1/43/4-10x3-1/4 fin hex hd bolt b-7 stl pln b18.2.1 () () ()50
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AbabaCAHex Machine BoltSteelZinc/Clear1-8 x 3 1/41-8 x 3 1/4 hex bolt stl znc b18.2.17
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AbabaCAHex Machine BoltSteelPlain1/2-13 x 3 1/41/2-13 x 3 1/4 hex bolt stl pln b18.2.120
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AbabaCAHex Machine BoltSteelZinc/Clear1/2-13 x 3 1/41/2-13 x 3 1/4 hex bolt stl znc b18.2.1305
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AbabaCAHex Machine BoltSteelZinc/Clear5/8-11 x 3 1/45/8-11 x 3 1/4 hex bolt stl znc b18.2.145
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AbabaCAHex Machine BoltSteelZinc/Clear3/4-10 x 3 1/43/4-10 x 3 1/4 hex bolt stl znc b18.2.1110
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AbabaCAHex Machine BoltSteelZinc/Clear5/16-18 x 3 1/45/16-18 x 3 1/4 hex bolt stl znc b18.2.1112
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AbabaCAHex Machine BoltSteelZinc/Clear3/8-16 x 3 1/43/8-16 x 3 1/4 hex bolt stl znc b18.2.1150
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AbabaCAHex Machine BoltSteelZinc/Clear1/2-13 x 3 1/41/2-13 x 3 1/4 hex bolt stl znc b18.2.150
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AbabaCAHex Machine BoltSteelZinc/Clear3/4-10 x 3 1/43/4-10 x 3 1/4 hex bolt stl znc b18.2.146
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Alma BoltMIHex Machine BoltGrade 2Zinc/Clear3/4-10 x 3 1/43/4-10 x 3 1/4 hex hd blt gr2 zp b18.2.1575
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JET FITTINGCAHex Machine BoltGrade AZinc/Clear1/4-20 x 3 1/41/4-20x3 1/4 hex bolt a307 gr a zn 494014 b18.2.11550
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JET FITTINGCAHex Machine BoltGrade AGalvanized5/16-18 x 3 1/45/16-18x3 1/4 hex bolt a307 gr a hdg 495264 b18.2.1180
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JET FITTINGCAHex Machine BoltGrade AZinc/Clear3/8-16 x 3 1/43/8-16x3 1/4 hex bolt a307 gr a zn 494056 b18.2.150
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QFCTXHex Machine BoltGrade 5Galvanized3/8 x 3 1/4.375x3.25 grade 5 hdg hex bolt nut&lw b18.2.1103
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JET FITTINGCAHex Machine BoltGrade 2Plain5/818 x 3 1/4bolt hex 5/818x3-1/4 grade 2 b18.2.150
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JET FITTINGCAHex Machine BoltGrade AZinc/Clear5/16-18 x 3 1/4bolt hex 5/1618x3-1/4 a307 steel zinc plated b18.2.1103
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JET FITTINGCAHex Machine BoltGrade AZinc/Clear3/8-16 x 3 1/4bolt hex 3/816x3-1/4 a307 steel zinc plated b18.2.11275
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JET FITTINGCAHex Machine BoltGrade 8Zinc/Yellow1/4-20 x 3 1/4bolt hex 1/420x3-1/4 grade 8 steel zinc plated yellow b18.2.1250
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JET FITTINGCAHex Machine BoltGrade AGalvanized5/16-18 x 3 1/45/16-18x3 1/4 (pt) bolts hex bolts a307 grade a hex bolt hdg (inch) b18.2.1280
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NBSILHex Machine BoltGrade 5Zinc/Yellow1/2-13 x 3 1/41/2-13 x 3-1/4 gr.5 hex machine bolt zinc yellow b18.2.114
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JET FITTINGCAHex Machine BoltGrade 5Zinc/Yellow5/8-11 x 3 1/4bolt hex 5/8-11x3-1/4 grade 5 steel zinc plated yellow b18.2.150
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JET FITTINGCAHex Machine BoltGrade 2Zinc/Clear1/4-20 x 3 1/4bolt hex 1/420x3-1/4 grade 2 steel zinc plated b18.2.1106
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JET FITTINGCAHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 3 1/4bolt hex 1/213x3-1/4 stainless steel b18.2.1118
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THRDFASTFLHex Machine BoltGrade AGalvanized5/8-11 x 3 1/4a307a h/b hdg b18.2.1579
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THRDFASTFLHex Machine BoltGrade AGalvanized1-8 x 3 1/4a307a h/b hdg b18.2.146
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THRDFASTFLHex Machine BoltGrade AGalvanized3/8-16 x 3 1/4a307a h/b hdg b18.2.115
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THRDFASTFLHex Machine BoltGrade AGalvanized5/8-11 x 3 1/4a307a h/b hdg b18.2.110
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THRDFASTFLHex Machine BoltGrade AGalvanized3/8-16 x 3 1/4a307a h/b hdg b18.2.16
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THRDFASTALHex Machine BoltGrade AGalvanized3/8-16 x 3 1/4a307a h/b hdg b18.2.1104
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THRDFASTOKHex Machine BoltGrade AGalvanized5/8-11 x 3 1/4a307a h/b hdg b18.2.122
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THRDFASTOKHex Machine BoltGrade AGalvanized3/4-10 x 3 1/4a307a h/b hdg b18.2.15
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All SizeTXHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/4-10 x 3 1/43/4-10 x 3 1/4 hex bolt s/s b18.2.110
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All SizeTXHex Machine BoltGrade 5Plain5/16-24 x 3 1/45/16-24 x 3 1/4 gr. 5 hex bolt b18.2.1450
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All SizeTXHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 3 1/41/4-20 x 3 1/4 hex bolt s/s b18.2.1278
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All SizeTXHex Machine BoltGrade 5Plain7/16-14 x 3 1/47/16-14 x 3 1/4 gr. 5 hex bolt b18.2.1495
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All SizeTXHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/8-11 x 3 1/45/8-11 x 3 1/4 hex bolt s/s b18.2.146
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All SizeTXHex Machine BoltGrade 8Plain3/8-24 x 3 1/43/8-24 x 3 1/4 gr. 8 hex bolt plain b18.2.144
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All SizeTXHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/8-16 x 3 1/43/8-16 x 3 1/4 hex bolt s/s b18.2.120
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All SizeTXHex Machine BoltGrade 8Plain1 1/4-12 x 3 1/41 1/4-12 x 3 1/4 gr. 8 hex bolt plain b18.2.152
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All SizeTXHex Machine BoltGrade 5Plain1/4-20 x 3 1/41/4-20 x 3 1/4 gr. 5 hex bolt b18.2.1105
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All SizeTXHex Machine BoltGrade 5Plain3/4-16 x 3 1/43/4-16 x 3 1/4 gr. 5 hex bolt b18.2.123
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All SizeTXHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/2-13 x 3 1/41/2-13 x 3 1/4 hex bolt s/s b18.2.182
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All SizeTXHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1-8 x 3 1/41-8 x 3 1/4 hex bolt s/s b18.2.13
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All SizeTXHex Machine BoltGrade 5Plain9/16-18 x 3 1/49/16-18 x 3 1/4 gr. 5 hex bolt b18.2.1125
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All SizeTXHex Machine BoltGrade 5Zinc/Clear5/8-11 x 3 1/45/8-11 x 3 1/4 gr. 5 hex bolt zinc domestic b18.2.1150
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All SizeTXHex Machine BoltGrade 8Plain3/4-10 x 3 1/43/4-10 x 3-1/4 grade 8 hex bolt domestic plain b18.2.136
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All SizeTXHex Machine Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain7/8-9 x 3 1/47/8-9 x 3 1/4 hex bolt s/s b18.2.13
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