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NutsDimensionsMechanical and Performance RequirementsDimensionsMechanical and Performance RequirementsMachine Screw NutsHex . 110Square . 110Small Pattern Hex . 111FLEXLOC NutsLight Hex, Full Height . 132Light Hex, Thin Height . 133Heavy Hex, Full Height . 134Heavy Hex, Thin Height . 135Finished Hex NutsGrade 2 .Hot Dip Galvanized .Stainless, 18-8 & 316 .Grade 5 .Grade 8 .112-113112-113112-113114-115114-115Slotted Hex Nuts . 136Heavy Hex, Steel & Stainless . 116-117Tee Nuts . 139Hex Jam, Steel & Stainless . 118Wing NutsCold Forged . 140Stamped . 141Washer Based . 142K-Lock . 119Hex Castle Nuts . 137Hex Panel Nuts . 138Automation Style LockGrade GT . 120Grade C . 120-121Conduit Lock Nut . 143Serrated Hex Flange Lock . 122Square NutsHeavy . 144Regular . 145Large Flange, Grade F . 123Hex Cap NutsOne Piece, Low Crown . 124Two Piece . 124Open Ended . 125Spring NutsFlat Type . 146“J” Type . 147“U” Type . 148Self Clinching . 149Two Way Reversible Lock . 126Hex Coupling . 150Nylon Insert Stop NutsLight Hex, Grade 8 . 127Standard Pattern . 128Thin Pattern . 129Heavy Hex . 130Heavy Hex, Thin Pattern . 131Internal Thread Dimensions . 151-152 FLEXLOC is a registered trademark of SPS Technologies, Inc. Kanebridge’s lock nuts are not manufactured by or connected with the producers of FLEXLOC nuts.109
NutsHex &SquareMachine Screw NutsFHHGGFSQUAREANDHEX MACHINE SCREW NUTSFNominal Size or BasicThread DiameterANSI/ASME B18.6.3GG1HWidth Across CornersWidth Across 330.7220.6920.2570.239110DescriptionHex Machine Screw Nut: A six-sided internally threaded fastener with flat tops and chamfered corners. Threads shall beUnified Standard, Class 2B.Square Machine Screw Nut: A four-sided, internally threaded fastener, tops and bottoms flat, without chamfer. Threads shallbe Unified coarse thread, Class 2B.Applications/AdvantagesHex Machine Screw Nut: Designed to be used specifically with machine screws. Stainless nuts are used with stainlessmachine screws where parts are subject to corrosive conditions.Square Machine Screw Nut: Offers a greater bearing surface for wrenching.MaterialSteel: Any low carbon steelStainless: 18-8 stainless steelPlatingSee Appendix-A for plating information.
SmallPatternNutsMachine Screw NutsFHG1ANSI/ASMEB18.6.3SMALL PATTERN HEX MACHINE SCREW NUTSNominal Size or BasicThread DiameterFG1HWidth Across FlatsWidth Across .3020.3610.3440.1140.102DescriptionSimilar in design to standard hex machine screw nuts but with smaller widths across the flats and across the corners.Applications/AdvantagesDesigned to be used with machine screws in areas where there is limited space for wrenching. Stainless nuts are used withstainless machine screws where parts are subject to corrosive conditions.MaterialSteel: Any low carbon steelStainless: 18-8 stainless steelPlatingSee Appendix-A for information about the plating of steel machine screw nuts.111
NutsDimensionalInformationFinished HexFHGF INISHED HEX NUTSNominal or Basic MajorDiameter of ThreadANSI/ASME B18.2.2FGHWidth Across FlatsWidth Across CornersThickness of Hex .1964.9592-19/322.6542.534112
Grade-2, Steel Hot-DipGalvanized & StainlessFinished HexNutsGRADE-2DescriptionA six-sided internally threaded fastener whose thickness is .875 D where D is the nominal nut size and 1.5D is their width across the flats,made from low carbon steel.Applications/AdvantagesThe most versatile and widely used nut design. Grade-2 nuts are for use with any low carbon bolt or screw that is not heat-treated, with aspecified minimum tensile strength of 74,000 psi or less.MaterialGrade-2 nuts shall be made from a low carbon steel which conforms to the following chemical composition requirements-- Carbon: 0.47%maximum; Phosphorus: 0.12% maximum; Sulfur: 0.23% maximum.HardnessRockwell B68 - C32Proof LoadCoarse thread: 90,000 psi.; Fine thread: 80,000 psi.PlatingSee Appendix-A for information on the plating of steel finished hex nuts.STEEL HOT-DIP GALVANIZEDDescriptionA six-sided internally threaded fastener whose thickness is .875 D where D is the nominal nut size and 1.5D is their width across the flats,made from low carbon steel with a galvanic zinc coating.Applications/AdvantagesDesigned for use with low carbon bolts and screws with a specified minimum tensile strength of 74,000 psi or less, which are subjectedto moisture, salt and other such corrosive conditions.MaterialNuts shall be made from a low carbon steel which conforms to the following chemical composition requirements-- Carbon: 0.47%maximum; Phosphorus: 0.12% maximum; Sulfur: 0.23% maximum.HardnessRockwell B68 - C32Proof LoadCoarse thread: 68,000 psi.; Fine thread: 60,000 psi.PlatingSee Appendix-A for information on the plating of steel finished hex nuts.STAINLESS STEEL, 18-8 & 316DescriptionSix-sided internally threaded fasteners whose thickness is .875 D where D is the nominal nut size and 1.5D is their width across the flats,made from austenitic alloys as described below.Applications/AdvantagesDesigned for use with stainless steel bolts and screws with a specified minimum tensile strength equal to or less than the specified proofstress of the mating nut. Both types of stainless are corrosion resistant with 316 stainless having greater such resistance as well assuperior strength at raised temperatures.Material18-8: Nuts shall be made from one of the following austenitic alloys: 303, 303Se, 304, XM7, all of which are characterized as having achromium content of 18% and nickel content of 8-10%.316: Nuts shall be made from 316 stainless steel, an austenitic alloy which differs from 18-8 by its molybdenum content (2-3%) and ahigher nickel content (10-14%).HeatTreatmentThe austenitic alloys develop their strength through work hardening during the fastener manufacturing process, as seen from the hardnessproperties below. The only heat treatment normally available on austenitic stainless alloys is annealing, which is done at approximately19000F to a dead soft condition and is not normally thermally reversible.Hardness1/4 through 5/8": Rockwell B95 - C32; 3/4 through 1": Rockwell B80 - C32Proof Load1/4 through 5/8": 100,000 psi.; Fine thread: 85,000 psi.113
NutsDimensionalInformationFinished HexFHGANSI/ASMEB18.2.2GRADE-5 & GRADE-8 FINISHED HEX NUTSNominal or Basic MajorDiameter of ThreadFGHWidth Across FlatsWidth Across CornersThickness of Hex 01-9/321.3171.245114
Grade-5 &Grade-8NutsFinished Hex*These styles of grade markings wereused on products manufactured priorto July 1999.x*Approved style of grade markingas issued by SAE J995, revisedJuly 1999.x*xGRADE-5DescriptionA finished hex nut made from steel with a maximum carbon content of 0.55%, a minimum manganese content of 0.30%, and amaximum sulfur content of 0.15%.Applications/AdvantagesFor use with bolts with a minimum tensile strength equal to or less than the specified proof stress of the nut.MaterialAISI 1008 - 1026 or equivalent steelCore HardnessRockwell C32 maximumProof Load1/4 through 1 in. Coarse thread: 120,000 psi.; Fine thread: 109,000 psi.1-1/8 through 1-1/2 in. Coarse thread: 105,000 psi.; Fine thread: 94,000 psi.PlatingSee Appendix-A for plating information.*xThese styles of grade markings wereused on products manufactured priorto July 1999.*Approved style of grade markingas issued by SAE J995, revisedJuly 1999.*xGRADE-8DescriptionA finished hex nut made from steel with a maximum carbon content of 0.55%, a minimum manganese content of 0.30% and amaximum sulfur content of 0.05%. The purchaser and producer of the nuts may agree to allow a sulfur content of 0.33%maximum provided that the manganese content is at least 1.35%.Applications/AdvantagesFor use with bolts with a minimum tensile strength equal to or less than 150,000 psi.MaterialAISI 1021 - 1045 or equivalent steelCore Hardness1/4 through 5/8 in.: Rockwell C24 - C323/4 through 1 in.: Rockwell C26 - C34Over 1 in. through 1-1/2 in.: Rockwell C26 - C36Proof Load1/4 through 1-1/2 in.: 150,000 psi.PlatingSee Appendix-A for plating information.*Product standards require all grade-marked nuts 1/4” diameter and larger to have a raised or depressed insignia identifying its manufacturer. “X” represents onelocation such an insignia may appear.115
NutsDimensionalInformationHeavy HexFHGANSI/ASMEB18.2.2H EAVY HEX NUTSNominal Size or BasicMajor Diameter of ThreadFGHWidth Across FlatsWidth Across 01.9382.3092.2091-7/321.2511.1871-3/8
ANSI/ASME B18.2.2 Nominal or Basic Major Diameter of Thread FG H Width Across Flats Width Across Corners Thickness of Hex Nuts Basic Max Min Max Min Basic Max Min. Nuts * * * * * * Nuts NUTS. Nuts Stainless 0 * * * * Nuts Stainless: Stainless: NUTS ANSI/ASME. Nuts NUTS. Nuts NUTS * 0. NUTS RB&W Corp. OCK NUTS RB&W Corp. * OCK NUTS 18-8 stainless steel . Nuts * LANGE NUT. AP
