ASTM A193 Grade B7 Fasteners -Stud, Bolt & Nuts

The alloy steel fasteners come in different dimensions, grades and types. There are fasteners ranging from 3mm to 200mm in length and the types differ such as studs, bolts, nuts washers and so on. The Grade B7 Alloy Steel Bolts are manufactured in a chromium molybdenum alloy and are heat treated by quenched and tempered methods. This production method improves the strength of the ASTM A193 B7 Nuts. The applications of these fasteners include power plants, petrochemical industries, oil drilling applications, oil and gas pipe lines and many others.

ASTM A193 Grade B7 specification covers requirements for high tensile alloy steel bolting material for use in high temperature or high-pressure service and other special purpose applications. It is a standard specification defining typical chemical composition, hardness requirement, preferred heat treatment, product marking, mechanical properties, certification and other requirements, suitable for bolting used in pressure vessel service, valves, flanges and fittings. ASTM A193 defines both SI and inch-pound units.

Grade B7 is a heat-treated chromium-molybdenum low-alloy steel with minimum tensile strength requirement and maximum hardness. Regal Sales Corporation uses Alloy Steel bar stock or forging stock to produce B7 headed and non-headed bolts. A193 Grade B7 is the most commonly used Bolt specification coupled with A194 Nuts for Bolting Carbon Steel pipeline. A193 B7 bolting is available in both metric sizes and imperial sizes.

AISI 4140 is heat treatable low alloy steel with chromium and molybdenum as strengthening elements, able to achieve high strength through quenching and tempering. It is a versatile alloy with overall combination of atmospheric corrosion resistance, toughness, wears resistance and fatigue strength, widely used for producing industrial fasteners such as a193 grade b7 specification.

There are several grades within the A193 specification. Each grade possesses unique chemical requirements, strength requirements, testing requirements, and applications. Material for Grade B7 may be heat-treated by the Furnace, the Induction or the Electrical Resistance method. Regal Sales Corporation is a manufacturer and supplier of ASTM A193 B7 fasteners in form of Stud Bolts, Hex Bolts, Heavy Hex Bolts, Hex Screws, Socket Head Cap Screws, Threaded Rods, Double End Studs, Eye Bolts, Galvanized Hex Bolts, Anchor Bolts, etc.