Black UNC Heavy Full Thread Hex Bolts ASTM A193 Grade B7

Heavy hex bolts black surface UNC full thread ASTM A193 Grade B7

High strength bolts or structural bolts are made to be used with heavy hex nuts to connect structural members. To be considered a structural connection, it has to conform to specific ASTM standards; specifically, ASTM A563 or ASTM A194.

Structural bolts are also categorized by grades. The grading system takes into consideration the bolt’s material, its size range, its proof load, the minimum yield strength, and the minimum tensile strength.

A193 Grade B7: Alloy steel, AISI 4140 / 4142 quenched and tempered.

A193 Grade B8, Class 1: Stainless steel, AISI 304, carbide solution treated.

A193 Grade B8, Class 2: Stainless steel, AISI 304, carbide solution treated, strain hardened.

A193 Grade B8M, Class 1: Stainless steel, AISI 316, carbide solution treated.

A193 Grade B8M, Class 2: Stainless steel, AISI 316, carbide solution treated, strain hardened.

A193 Grade B16: Alloy steel, chromium-molybdenum-vanadium, quenched and tempered.

NOTE: There are other grades of A193. Those listed here are the ones we receive the most requests for.For information on other types, please contact us.

SIZE: 1/4" - 5", M6 -M100. And 600mm Max length.

THREAD: ASME B1.1 , UNC, UNF, CLASS 2A

FINISHED: Plain, Zinc Plated(Clear/Blue/Yellow/Black), Black oxide, Nickel, Dacromet, H.D.G.

Shanghai Powermax Fastener co. Ltd was established in 2008, located in Shanghai China,. For many years of export experience, our products has been best-selling in Europe, the United States, the Middle East and Southeast Asia. The products are manufactured by more functions machine, which is brought in domestic and foreign well-known enterprises. The products made are fully compatible with the international standards, well received by domestic and foreign customers. Through scientific management, Shanghai Powermax Fastener co. Ltd has been obtained ISO9000 certificate of Quality Managerment System, SGS and BV international certificate system of Make in China.

Product standards including DIN, ISO, GB and ASME/ANSI, BS, JIS AS. Main levels of carbon steel: 4.8, 4.8, 6.8, 8.8, 10.9, and 12.9 grade, the main material of stainless steel SS201, SS304, SS316 and various kinds of special stainless steel.

The width range of our products can be divided into auto fasteners, mechanical fasteners, construction fasteners, power fasteners, railway fasteners, household electrical appliances fasteners and chemical fasteners,

We have first-class service team, so we can meet the different requests for a set of customers. We solemnly commitment, first-grade quality, timely delivery guaranteed

Reasonable price and service paramount, forward to the operation principle of quality first and customer first, pursuit of excellence to create first-class brand, our aim is brand promoting development, management promoting earnings, warmly greeting home and abroad new and old customers to communicate and cooperate to seek greater success and brilliant future.