5/8-18 Heavy Hex Nuts

Heavy Hex Nuts are larger and thicker than standard (finished) hex nuts.The heavy hex pattern is typically used for large diameter and high strength bolts, and with certain high-strength grades of steel can be used with structural bolts in structural applications.

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

Buy Heavy Hex Nuts from one of our FCH Network Members
SupplierLocTypeMaterialFinishSizeDescriptionQty 
B & K FASTPAHeavy Hex NutBrassPlain5/8-185/8-18 brass heavy hex nuts b18.2.2 b18.2.62
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TSFTXHeavy Hex NutGrade 2HPlain5/8-18heavy hex nut a194-2h pl. 5/8-1842
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YANKEENHHeavy Hex NutGrade 2HPlain5/8-182h astm a194 heavy hex nut200
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ACCURATEILHeavy Hex Nut300 Stainless (A1,A2, 18-8,304,310 etc.)Plain5/8-18hex nut heavy 18-8 s/s44
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JacksonMSHeavy Hex NutGrade 2HPlain5/8-18nf 2h heavy hex nut612
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Future FastenerTXHeavy Hex NutGrade 2HBlack Oxide5/8-185/8-18 2h heavy hex nut blk17
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PerigeeMIHeavy Hex NutSteelPhosphate5/8-18 x 1 1/16 x 39/64heavy hex slotted nut b18.2.2 b18.2.6408
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DeltaTXHeavy Hex NutGrade 2HPlain5/8-18hvy hex nut nf a194-2h plain 5/8-18123
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Spring BoTXHeavy Hex NutNi-Cu Alloy (Monel, K-Monel, etc.)Plain5/8-185/8(18-nf) heavy hex nut monel 400 b18.2.2 b18.2.6 b18.2.2 b18.2.6 usainquire
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Spring BoTXHeavy Hex NutNi-Cu Alloy (Monel, K-Monel, etc.)Plain5/8-185/8(18-nf) heavy hex nut monel 400 b18.2.2 b18.2.6 usainquire
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LibertyILHeavy Hex NutSteelPlain5/8-18heavy hex nut plain235
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LibertyILHeavy Hex NutSteelZinc/Clear5/8-18heavy hex nut plate plate40
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GLFOHHeavy Hex NutGrade 2HPlain5/8-18hvy hex nut a194 2h stl471
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Kanebridge ILHeavy Hex NutSteelZinc/Clear5/8-185/8-18 heavy hex nut zinc10,000
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Kanebridge ILHeavy Hex NutSteelBlack Oxide5/8-185/8-18 heavy hex nut black oxide10,000
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LightningLAHeavy Hex NutGrade 2HPlain5/8-18astm a194 gr. 2h heavy hex nut fine thread267
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