Hex bolt, nut and washer for ANSI flange connection includes heavy hex bolt, heavy hex nut and (or without) plain washer, and they form the bolting mainly..
General description of Stud Bolts and Hex Bolts used in Petro and
DIN6921 Hex Flange Bolt M10X30 for Silos with Rubber Washer
Pipe flange and accessories - TPMCSTEEL
ASTM A453 Grade 660 ASME B16.5 Stud Bolts Class 150 - Boltport
Types of Valve End Connections
Hex bolt, nut and washer for ANSI flange connection
Wholesale stud bolt, nut and washer for flange connect
Tank Gaskets & Bolt Kits - Hawkeye Industries
Thread Protrusion of a bolted assembly - J C Gupta & Sons
Nuts, Bolts & Washers, Fixings & Fasteners
Class 8.8 Bright Zinc Plated M8 Hex Flange Washer Head Bolt with
Bolts & Nuts,Olets, pipe olets, Olets Manufacturers