Jiangsu Zhenya Special Screw Co.,Ltd is one of the leading China heavy cap screw or hex bolts manufacturers and suppliers,Website:http://www.zhenyafastener.com, as a professional company, our productive factory is able to produce CE certification heavy cap screw or hex bolts at both high quality and low price. Welcome to buy discount and cheap, or wholesale products from us. these bolts have shorter thread lengths than standard heavy hex bolts.hex head that is larger than a standard hex head. These specifications include: A193, A320 and A307B also A325 and A490 Heavy hex bolts can be used for many different applications that include construction materials for projects such as docks, bridges, highway structures, and buildings, fastening wood, steel, IT’S with forged heads are also commonly used as headed anchor bolts. Heavy Hex Screws, ASTM A193 B7, Plain The information below lists the required dimensional, chemical and physical characteristics of the fasteners in this purchase order. If the order received does not meet these requirements, it may result in a supplier corrective action request, which could jeopardize your status as an approved vendor. Unless otherwise specified, all referenced consensus standards must be adhered to in their entirety. E F H Nominal Size or Full-Size Body Basic Product Width Across Flats Head Height Diameter Diameter Max. Min. Max. Min. Max. Min. 3/8 0.3750 0.375 0.360 0.688 0.669 0.243 0.226 1/2 0.5000 0.500 0.482 0.875 0.850 0.323 0.302 5/8 0.6250 0.625 0.605 1.062 1.031 0.403 0.378 3/4 0.7500 0.750 0.729 1.250 1.212 0.483 0.455 7/8 0.8750 0.875 0.852 1.438 1.394 0.563 0.531 1 1.0000 1.000 0.976 1.625 1.575 0.627 0.591 1-1/8 1.1250 1.125 1.098 1.812 1.756 0.718 0.658 1-1/4 1.2500 1.250 1.223 2.000 1.938 0.813 0.749 1-3/8 1.3750 1.404 1.345 2.188 2.119 0.878 0.81 1-1/2 1.5000 1.531 1.470 2.375 2.300 0.974 0.902 1-3/4 1.7500 1.785 1.716 2.750 2.662 1.134 1.054 2 2.0000 2.039 1.964 3.125 3.025 1.263 1.175 2-1/4 2.2500 2.305 2.214 3.500 3.388 1.423 1.327 2-1/2 2.5000 2.559 2.461 3.875 3.750 1.583 1.479 2-3/4 2.7500 2.827 2.711 4.250 4.112 1.744 1.632 3 3.0000 3.081 2.961 4.625 4.475 1.935 1.815 Specification Requirements: • Dimensions: 3/8” see dimensions above 1/2” to 1-1/4” shall be Heavy Hex Cap Screw- ASME B18.2.1 Larger diameters – Heavy hex cap screws with the following exception per ASTM A193, the maximum body diameter and radius of fillet may be the same as for heavy hex bolt series. For sizes larger than 1-1/4” nominal diameter. • Material & Mechanical Properties:ASTM A193/A193M and ASME SA193/SA193M
