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1 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 .

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

Buy Square Head Bolts from one of our FCH Network Members
SupplierLocTypeMaterialFinishSizeDescriptionQty 
JacksonMSSquare Head BoltGrade 2Zinc/Clear5/16 x 1nc square bolt gr. 282
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JacksonMSSquare Head BoltGrade 5Zinc/Clear1/2-13 x 1nc square bolt gr.546
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JacksonMSSquare Head BoltGrade 2Zinc/Clear1/2-13 x 11/2 square bolt gr. 2772
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Future FastenerTXSquare Head BoltGrade 2Galvanized5/16-18 x 15/16-18 x 1 g2 (sq head mch bolt) galv281
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JacksonMSSquare Head BoltGrade 2Plain1/2-13 x 1nc square bolt gr. 2278
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AFIFLSquare Head BoltSteelPlain5/16-18 x 15/16-18x1 sq hd bolt st () ()2275
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Cal FastenrsCASquare Head BoltSteelZinc/Clear5/16-18 x 1square hd mach bolt square hd bolt700
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ASMCILSquare Head BoltGrade APlain1/2-13 x 1(ft) coarse a307 gra square hd m/b low carb b18.2.1260
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ASMCILSquare Head BoltGrade AGalvanized3/8-16 x 1a307 gra square hd m/b low carb hdg21
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ASMCILSquare Head BoltGrade APlain3/8-16 x 1(ft) coarse a307 gra square hd m/b low carb250
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ASMCILSquare Head BoltGrade AZinc/Clear1/4-20 x 1a307 gra square hd m/b low carb zp2,333
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ASMCILSquare Head BoltGrade AZinc/Clear5/16-18 x 1a307 gra square hd m/b low carb zp650
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ASMCILSquare Head BoltGrade APlain1/4-20 x 1(ft) coarse a307 gra square hd m/b low carb500
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ASMCILSquare Head BoltGrade AGalvanized5/16-18 x 1a307 gra square hd m/b low carb hdg880
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ASMCILSquare Head BoltGrade AZinc/Clear3/8-16 x 1a307 gra square hd m/b low carb zp77
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GLFOHSquare Head BoltGrade APlain5/16-18 x 1 sq hd bolt a307 stl pln | ()1300
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EndriesWISquare Head BoltSteelZinc/Clear5/16-18x1 square head machine bolt zinc27222
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Set ScrewILSquare Head BoltSteelPlain1/2-13 x 1square knurled cup point heat treat r/c-45 per printinquire
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ManscoMISquare Head BoltGrade 8Plain3/8-16 x 13/8-16x1 square hd machine bolt gr8 pln 100/box350
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ManscoMISquare Head BoltSteelZinc/Clear1/4-20 x 11/4-20 x 1 square hd machine bolt triv znc w/nylon patch2175
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ACCURATEILSquare Head BoltSteelZinc/Clear5/16-18 x 1bolt square machine1000
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ACCURATEILSquare Head BoltSteelPlain1/2-13 x 1bolt square machine1750
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ACCURATEILSquare Head BoltSteelZinc/Clear1/2-13 x 1bolt square machine830
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ACCURATEILSquare Head BoltSteelZinc/Clear3/8-16 x 1bolt square machine15056
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LibertyILSquare Head BoltSteelPlain5/8-11 x 1square m/b bolt240
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KomarILSquare Head BoltSteelPlain3/8-16 x 13/8-16x1 square hd machine bolt400
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AmericanNYSquare Head BoltGrade 5Plain5/16-24 x 15/16-24 x 1 square bolt grade 52220
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AmericanNYSquare Head BoltGrade 5Plain5/16-24 x 15/16-24 x 1 square bolt grade 5 plain672
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AmericanNYSquare Head BoltSteelZinc/Yellow5/16-18 x 1square m/s bolt170
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Alma BoltMISquare Head BoltGrade 2Zinc/Clear1/2-13 x 1square bolt5279
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MFSKSSquare Head BoltGrade 2Zinc/Yellow3/8-16 x 1square25
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Alma BoltMISquare Head BoltGrade 2Plain5/16-18 x 1square bolt1086
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Alma BoltMISquare Head BoltGrade 2Plain3/8-16 x 1square bolt693
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XL ScrewGASquare Head BoltSteelPlain1/4-20 x 1f/t square hd m/b astm a3072,000
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XL ScrewGASquare Head BoltSteelPlain3/8-16 x 1f/t square hd m/b astm a307800
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XL ScrewGASquare Head BoltSteelPlain5/16-18 x 1f/t square hd m/b astm a3071,300
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XL ScrewGASquare Head BoltSteelPlain1/4-20 x 1square m/b std thrd fsb astm a3072,000
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XL ScrewGASquare Head BoltSteelPlain1/2-13 x 1square m/b std thrd fsb astm a307460
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XL ScrewGASquare Head BoltSteelZinc/Clear3/8-16 x 1f/t square hd m/b astm a307 zp800
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SWACOOHSquare Head BoltGrade AZinc/Clear3/8-16 x 13/8-16x1 a307 gr a square hd bolt zinc5
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MidStatesMISquare Head BoltGrade 2Plain5/8-11 x 15/8-11 x 1in square hd bolt gr 2 pln160
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KomarILSquare Head BoltSteelPlain3/8-16 x 1square hd m/b400
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HBBOLTCASquare Head BoltSteelPlain1/4-20 x 1square hd mb500
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BIG BOLTILSquare Head BoltGrade 5Plain5/16-18 x 1bolt & c/s square boltsquare b18.2.15000
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BIG BOLTILSquare Head BoltSteelPlain5/8-11 x 1bolt & c/s square boltsquare b18.2.1525
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BIG BOLTILSquare Head BoltGrade 5Plain1/4-20 x 1bolt & c/s square boltsquare b18.2.11200
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BIG BOLTILSquare Head BoltGrade 5Plain3/8-16 x 1bolt & c/s square boltsquare b18.2.15000
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LibertyILSquare Head BoltSteelZinc/Clear3/8-16 x 1square m/b machine bolt330
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HodellOHSquare Head BoltSteelPlain1/2-13 x 11/2-13x1 square hd mach bolt plain368
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HodellOHSquare Head BoltSteelGalvanized5/16-18 x 15/16-18x1 square hd machine bolt hdg426
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HodellOHSquare Head BoltSteelGalvanized5/16-18 x 15/16-18x1 square hd machine bolt hdg426
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HodellOHSquare Head BoltSteelPlain1/2-13 x 11/2-13x1 square hd mach bolt plain368
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ISSCOMOSquare Head BoltGrade 2Plain1/2-13 x 1700
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ISSCOMOSquare Head BoltGrade 2Zinc/Clear7/16-14 x 11025
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Delta SecondaryILSquare Head BoltGrade 2Plain5/16-18 x 13190
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Delta SecondaryILSquare Head BoltGrade 2Plain3/8-16 x 1650
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CascadeORSquare Head BoltSteelPlain1/4-20 x 1square m/b b18.2.1800
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B & K FASTPASquare Head BoltSteelGalvanized1/4-20 x 11/4-20 x 1 galv square bolts b18.2.179
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ACFCASquare Head Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain1/4-20 x 11/4-20x1 s/s square head bolt with groove ( print )33
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ACFCASquare Head BoltGrade 5Zinc/Clear5/16-24 x 15/16-24x1 square head cap screw gr5 z/p rohs200
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Kanebridge ILSquare Head BoltSteelPlain1/4-20 x 11/4-20x1 square machine bolt plain37.500
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Kanebridge ILSquare Head BoltSteelPlain5/16-18 x 15/16-18x1 square machine bolt plain20,000
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Kanebridge ILSquare Head BoltSteelPlain3/8-16 x 13/8-16x1 square machine bolt plain15,000
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Kanebridge ILSquare Head BoltSteelPlain1/2-13 x 11/2-13x1 square machine bolt plain7.500
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BHAMALSquare Head BoltSteelPlain1/2-13 x 11/2-13x1 square hd mach bolt b18.2.125
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QFCTXSquare Head BoltGrade 2Zinc/Clear3/8-16 x 13/8-16x1 sq head bolt gr2 zinc b18.2.170
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IRFNCSquare Head BoltSteelZinc/Clear1/4-20 x 1blt stve trs w sq nut stl9600
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ZAL INDUSCASquare Head BoltGrade 2Plain1/4-20 x 11/4-20 x 1 sq hd mach bolt grade 22,250
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ZAL INDUSCASquare Head BoltSteelPlain1/2-13 x 11/2-13 x 1 sq hd mach bolt50
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ScrewsIncOHSquare Head BoltGrade 2Plain1/2-13 x 1600
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LippinCASquare Head BoltSteelPlain3/8-16 x 1square head bolt plain820
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JET FITTINGCASquare Head BoltSteelPlain1/2-13 x 11/2-13x1 square machine bolts steel plain b18.2.1450
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SRFALSquare Head BoltGrade 2Plain1/4-20 x 1square hd bolt12
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SRFALSquare Head BoltGrade 2Plain5/16-18 x 1square hd bolt-
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SRFALSquare Head BoltGrade 2Galvanized3/8-16 x 1square hd bolt10
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SRFALSquare Head BoltGrade 2Plain7/16-14 x 1square hd bolt25
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SRFALSquare Head BoltGrade 2Plain1/2-13 x 1square hd bolt-
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OBRIENOHSquare Head BoltSteelPlain3/8-16 x 1square hd mach bolt750
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THRDFASTFLSquare Head BoltSteelGalvanized5/8-11 x 1square hd bolt hdg b18.2.1291
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THRDFASTALSquare Head BoltSteelGalvanized1/2-13 x 1square hd bolt hdg b18.2.1194
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THRDFASTALSquare Head BoltSteelGalvanized3/8-16 x 1square hd bolt hdg b18.2.115
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THRDFASTMSSquare Head BoltSteelPlain7/16-14 x 1square hd bolt b18.2.180
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WSBKYSquare Head BoltGrade 2Zinc/Clear1/4-20 x 1blt sqr gr2 (zn) 1/4-20x1 b18.2.17,994
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GUIDONNJSquare Head BoltSteelZinc/Clear1/4-20 x 1square head machine bolt a307a600
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GUIDONNJSquare Head BoltSteelTin5/16-18 x 15/16-18 x 1 square head battery bolt, tin zinc per gmw 320018,000
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FMPMASquare Head BoltSteelPlain1/4-20 x 1square bolt140
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FMPMASquare Head BoltSteelZinc/Clear3/8-16 x 1square bolt455
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Valley NuWASquare Head BoltSteelPlain1/2-13 x 1nc square bolt pl21
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ACCURATEILSquare Head BoltSteelZinc/Clear1/2-13 x 1square m/b5,500
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ACCURATEILSquare Head Bolt300 Stainless (A1,A2, 18-8,304,310 etc.)Plain#10-32 x 1square m/b 18-8ss5,000
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ACCURATEILSquare Head BoltSteelPlain5/8-11 x 1square m/b1,000
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ACCURATEILSquare Head BoltSteelZinc/Clear3/8-16 x 1square m/b21,000
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ACCURATEILSquare Head BoltSteelZinc/Clear7/16-14 x 1square m/b1,650
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ACCURATEILSquare Head BoltSteelZinc/Clear5/16-18 x 1square m/b22,000
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ACCURATEILSquare Head BoltSteelPlain3/4-10 x 1square m/b200
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