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ASTM A193 B7 Stud Bolt A194 2H Heavy Hex Nut for B16.5 Flanges
ASTM A193 B7 Stud Bolt A194 2H Heavy Hex Nut for B16.5 Flanges
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A193 B7M has a minimum tensile strength of 100 KSI for diameters under 4. The minimum tensile strength for A193B7 is 125 KSI for diameters under 2-1/2, and 115 KSI for 2-1/2 diameter. Hardness is probably the most significant difference between A193B7M & A193B7. The maximum hardness of ASTM A193B7M is 235 HB or 99 HRB, while the maximum hardness of A193 B7 is 321 HB or 35 HRC. The most notable difference from a manufacturing perspective is that when providing A193B7M bolts, every individual bolt or stud in the lot must be hardness tested. A193B7M fasteners will also require a different grade of heavy hex nut than A193B7, which would be ASTM A194 Grade 2HM.


Product Description 

Product NameStud Bolt A193 B7M
MaterialStainless Steel, Carbon Steel, Alloy Steel, Duplex Stainless Steel
SizeM6-M100, 3/8"-4"  Length: Up to 3000mm
Standard  GB, DIN, JIS, ANSI, BS                                                 
Heat TreatmentTempering,Quench,Solution etc 
PackageGeneral export package, or according to customer's requirement