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6 1/2 inch length Square Head Bolts

Square Head Bolts were once the most common form of bolt, until they were replaced by hex head bolts. They are covered under ANSI Standard B18.2.1 and are now most commonly used for aesthetic purposes to provide a rustic look .

37 results, (click on any line for more information)

Buy Square Head Bolts from one of our FCH Network Members
SupplierLocTypeMaterialFinishSizeDescriptionQty 
JacksonMSSquare Head BoltGrade 8Plain1 3/8-6 x 6 1/2nc square bolt gr. 86
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GLFOHSquare Head BoltGrade APlain3/4-10 x 6 1/23/4-10x6-1/2 square hd bolt a307 stl pln b18.2.1 1
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HayesCASquare Head BoltSteelGalvanized1/2-13 x 6 1/21/2-13 x 6 1/2 square hd bolt hdg12
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HayesCASquare Head BoltSteelPlain1 1/4-7 x 6 1/21 1/4-7 x 6 1/2 square hd bolt pln20
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EndriesWISquare Head BoltGrade 2Plain1 1/2-6 x 6 1/21-1/2-6x6-1/2 grade 2 square head machine bolt plain40
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ACCURATEILSquare Head BoltSteelPlain1/2-13 x 6 1/21/2-13x6 1/2 bolt square machine plain80
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ACCURATEILSquare Head BoltSteelPlain3/4-10 x 6 1/2bolt square machine170
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ACCURATEILSquare Head BoltSteelPlain1-8 x 6 1/2bolt square machine14
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LibertyILSquare Head BoltSteelPlain2-4 1/2 x 6 1/2square hd m/b270
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LibertyILSquare Head BoltSteelPlain1/2-13 x 6 1/2square m/b machine bolt262
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XL ScrewGASquare Head BoltSteelPlain1-8 x 6 1/2square m/b std thrd fsb astm a30725
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BIG BOLTILSquare Head BoltGrade 8Plain3/4-16 x 6 1/2bolt & c/s square boltb18.2.11187
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BIG BOLTILSquare Head Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain3/4-10 x 6 1/2bolt & c/s square bolt300 (a1 a2 18-8 304 310 etc.)square b18.2.1200
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BIG BOLTILSquare Head BoltGrade 8Plain1/2-13 x 6 1/2bolt & c/s square boltsquare b18.2.1800
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ISSCOMOSquare Head BoltGrade 2Plain1-14 x 6 1/232
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B & K FASTPASquare Head BoltSteelPlain7/8-9 x 6 1/27/8-9 x 6 1/2 sq. bolts plain b18.2.19
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B & K FASTPASquare Head BoltGrade 5Plain5/8-11 x 6 1/25/8-11 x 6 1/2 square bolts full thread gr 5 plain b18.2.11
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B & K FASTPASquare Head BoltSteelPlain5/8-11 x 6 1/25/8-11 x 6 1/2 square bolts plain b18.2.1600
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ZAL INDUSCASquare Head BoltGrade 2Plain5/8-11 x 6 1/25/8-11 x 6 1/2 sq hd mach bolt grade 210
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LippinCASquare Head BoltSteelPlain1/2-13 x 6 1/2square head bolt plain30
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SRFALSquare Head BoltGrade 2Plain1/2-13 x 6 1/2square hd bolt-
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KBSTNSquare Head BoltGrade 8Plain1-8 x 6 1/21-8 x 6 1/2 square!machbolt gr-8 b18.2.155
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KBSTNSquare Head BoltGrade 8Plain3/4-10 x 6 1/23/4-10 x 6 1/2 square!machbolt gr-8 b18.2.186
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KBSTNSquare Head BoltGrade 8Plain7/8-9 x 6 1/27/8-9 x 6 1/2 square mach bolt gr-8 b18.2.174
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Valley NuWASquare Head BoltGrade 5Plain3/4-10 x 6 1/2nc gr5 square bolt pl10
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Valley NuWASquare Head BoltSteelPlain5/8-11 x 6 1/2nc square hd bolt23
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Valley NuWASquare Head BoltSteelGalvanized3/4-10 x 6 1/2nc square bolt hdg7
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Valley NuWASquare Head BoltGrade 5Plain5/8-11 x 6 1/2nc gr5 square bolt pl12
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Valley NuWASquare Head BoltSteelPlain1/4-20 x 6 1/2nc square bolt pl9
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Valley NuWASquare Head BoltSteelGalvanized7/8 x 6 1/27/8 x 6 1/2 square hd bolt hdg 3nc 60deg semi-cone w/o nut M7064-3S2
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ACCURATEILSquare Head BoltSteelZinc/Clear5/16-18 x 6 1/2square m/b25
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ACCURATEILSquare Head BoltSteelPlain3/4-10 x 6 1/2square m/b110
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ACCURATEILSquare Head BoltSteelZinc/Clear7/16-14 x 6 1/2square m/b350
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ACCURATEILSquare Head BoltSteelZinc/Clear1/4-20 x 6 1/2square m/b100
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ACCURATEILSquare Head BoltSteelPlain1/2-13 x 6 1/2square m/b500
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ACCURATEILSquare Head BoltSteelPlain7/8-9 x 6 1/2square m/b25
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ACCURATEILSquare Head BoltSteelPlain1-8 x 6 1/2square m/b30
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