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3/4 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 .

36 results, (click on any line for more information)
Buy Square Head Bolts from one of our FCH Network Members
SupplierLocTypeMaterialFinishSizeDescriptionQty 
Future FastenerTXSquare Head BoltSteelGalvanized3/8-16 x 3/43/8-16 x 3/4 square head bolt galv1600
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CenturyFLSquare Head BoltGrade 2Plain5/16-18 x 3/45/16-18 x 3/4 square head bolt grade 2 (STEEL ZINC CLEAR) (STEEL ZINC CLEAR) 1776
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ASMCILSquare Head BoltSteelZinc/Clear5/16-18 x 3/4coarse square hd m/b low carb zp2,600
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ASMCILSquare Head BoltGrade AGalvanized1/4-20 x 3/4a307 gra square hd m/b low carb hdg550
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ASMCILSquare Head BoltGrade AGalvanized5/16-18 x 3/4a307 gra square hd m/b low carb hdg b18.2.11,400
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ASMCILSquare Head BoltGrade AZinc/Clear1/4-20 x 3/4a307 gra square hd m/b low carb zp2,750
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ASMCILSquare Head BoltGrade AGalvanized3/8-16 x 3/4a307 gra square hd m/b low carb hdg104
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ASMCILSquare Head BoltGrade AZinc/Clear3/8-16 x 3/4a307 gra square hd m/b low carb zp1,750
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ACCURATEILSquare Head BoltSteelPlain5/16-18 x 3/4bolt square machine50
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ACCURATEILSquare Head BoltSteelPlain1/2-13 x 3/4bolt square machine50
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ACCURATEILSquare Head BoltSteelZinc/Clear7/16-14 x 3/4bolt square machine3200
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CenturyNYSquare Head BoltGrade 2Zinc/Clear5/16-18 x 3/4 square head bolt grade 2 steel zinc clear1776
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LibertyILSquare Head BoltGrade 5Zinc/Yellow5/16-18 x 3/4square m/b300
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KomarILSquare Head BoltSteelPlain3/8-16 x 3/43/8-16x3/4 square hd machine bolt1500
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AmericanNYSquare Head BoltSteelBlack Oxide1/4-20 x 3/4square m/b black ox5150
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Alma BoltMISquare Head BoltGrade 2Plain1/4-20 x 3/4square bolt3710
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Alma BoltMISquare Head BoltGrade 2Plain5/16-18 x 3/4square bolt1313
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XL ScrewGASquare Head BoltSteelPlain5/16-18 x 3/4f/t square hd m/b astm a3071,500
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SWACOOHSquare Head BoltGrade APlain5/16-18 x 3/45/16-18x3/4 a307 gr a square hd bolt pl600
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KomarILSquare Head BoltSteelPlain3/8-16 x 3/4square hd m/b1500
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BIG BOLTILSquare Head BoltGrade 5Plain5/16-18 x 3/4bolt & c/s square boltsquare b18.2.15500
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JET FITTINGCASquare Head BoltGrade APlain5/16-18 x 3/45/16-18x3/4 a307 gr a square hd bolt pl 747046 b18.2.1600
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WDMBIASquare Head BoltSteelPlain5/16 x 3/4e/key mach sqr st (pl) 5/16x3/4 drw (W030)356
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QFCTXSquare Head BoltGrade AGalvanized3/8-16 x 3/43/8-16x3/4 square head bolt a307 hdg b18.2.1987
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ISSCOMOSquare Head BoltGrade 2Zinc/Clear1/4-20 x 3/46800
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ArdenWISquare Head BoltGrade 5Zinc/Yellow5618 x 3/45618x3/4 square hd bolt gr5 w/chmfr zyinquire
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Kanebridge ILSquare Head BoltSteelPlain5/16-18 x 3/45/16-18x3/4 square machine bolt plain20,000
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ZAL INDUSCASquare Head BoltGrade 2Zinc/Clear5/16-18 x 3/45/16-18 x 3/4 sq hd mach bolt grade 2 pltd100
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JET FITTINGCASquare Head BoltSteelPlain5/16-18 x 3/4bolt square 5/1618x3/4 s b18.2.1600
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SRFALSquare Head BoltGrade 2Plain5/16-18 x 3/4square hd bolt66
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SRFALSquare Head BoltGrade 2Plain3/8-16 x 3/4square hd bolt-
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JET FITTINGCASquare Head BoltSteelBlack Oxide5/16-18 x 3/4bolt square 5/16-18x3/4 steel black oxide and wax b18.2.12000
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THRDFASTMSSquare Head BoltSteelPlain5/16-18 x 3/4square hd bolt b18.2.180
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ACCURATEILSquare Head BoltSteelZinc/Clear7/16-14 x 3/4square m/b3,100
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ACCURATEILSquare Head BoltSteelPlain1/2-13 x 3/4square m/b150
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QFSMISquare Head Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 3/4Square head set screw cup point12
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