The Grade 5 bolt can be distinguished by the 3 dashes (l) on top of the head of the bolt, please see photo below. Hex head cap screws are common threaded fasteners with hexagonal heads, which are six-sided tops without indentations. The American Institute of Steel Construction (AISC) references the Research Council on Structural Connections (RCSC) "specification of structural joints using ASTM A325 or A490 bolts" to describe correct installation and tightening methods for joints using structural bolts. Specifications: A325, A490. Hex Head Screw Threaded Fastener OptionsHex head cap screws with standard thread pitch are available fully threaded to DIN 933 and partially threaded to DIN 931. A variation, ASTM A307 Grade B hex bolts have a heavy hex head and are commonly used for flanged joints in piping systems with cast iron flanges and structural applications. Threads Per Inch (TPI) 13. Structural Bolts - 1/2" - 1 1/2" Diameter. As a General Hex Cap Screw Rule: Thread Length is: 2X The Diameter Plus 1/2". A Grade 5 hex bolt has greater tensile strength than a Grade 2 hex bolt, and its yield to tensile ratio is the lowest of all heat treated steels. Heavy hex head bolts, cap screws, and heavy hex nuts are common in industrial flange bolting and structural bolting.
Hex bolts are typically manufactured using a hot-forging process and have a flat end. They are commonly used in general construction, marine applications, refineries, and the power and energy industry. Hex lag screws (lag bolts) are used in wood construction. Coarse / Fine Coarse. Grade B7 heavy hex bolts are typically used in flange bolting applications with high temperature requirements or in high pressure service. Lengths: Up to 240". Zinc Plated Hex Head Bolts and Cap Screws. For instance, all A325 hex fasteners are bolts. Brass fasteners are commonly used by electrical and communications industries, builders hardware and some marine applications. 6 bolts have an ultimate material strength of 400N/mm2.
ASTM A193 Grade B7 Heavy Hex Head Bolts. Inch series fasteners meeting SAE J429 Grade 8 specifications are general use fasteners commonly used in automotive and construction related industries. Rarely do you have a choice when selecting a fastener. Threads per inch: 13. 3/8" -16 x 4" Hex Head Full Thread Bolt, 18-8 SS.
The most common type of bolt used in structural connections offering a larger diameter hex head. Hex head cap screws are designed to secure objects within or against other objects for a non-loosening hold. And the yield (or proof) stress is 60% of the ultimate strength. They are available in a choice of types, sizes, materials and finishes, providing the freedom and flexibility to select the bolt best suited to your particular task or application. Or call (630) 833-0300. ASTM F3125 Grade A325 Type 1 Heavy Hex Bolts. Hex Bolts Full Thread 304 Stainless Steel Features: - Manufactured to European DIN 933 standard. Grade A307 bolts have a finished head and are used for general purpose applications. Hex Bolts and Cap Screws Basics. Fastening & Joining.
Silicon Bronze Hex Head Cap Screws. These bolts have machine threads for use with nuts or a tapped hole with same size and thread pitch. Hex Lag Screws - 1/2" - 1 1/2" Diameter. Our extensive inventory is immediately available through same-day shipping, with most orders fulfilled within two business days. Non-magnetic and electrically conductive, these fasteners are best known for their corrosion resistance. Pressure & Temperate Control. Cap screws are commonly manufactured by a cold-heading process or a turned CNC operation and have a chamfered end. Black fasteners offer near zero corrosion resistance, though black oxide coatings or oiled coatings do offer increased corrosion resistance over an unfinished plain black fastener. Type 1 and Type 3 A325 bolts are intended for use in steel to steel structural connections. Hex Head Cap Bolts are a Primary Fastener Type For Many Thru-Bolting Applications. For Fully Threaded Hex Bolts Please View Our FULL THREAD Tap Bolt Category.
High-strength fasteners manufactured from heat-treated medium carbon alloy steel and are also quenched and tempered. Bolts with hexagonal heads and machine threads for use with a nut or in a tapped hole. Black fasteners are commonly referred to as plain finish, black, black oxide, black phosphate, bare or light oil coated. ASTM A307 Hex Bolts. Brass hex head cap screws are electrically conductive, non-magnetic, and have good corrosion resistance. The main difference is that a hex bolt is meant to have a hex nut tightened onto it, while a cap screw is meant to be threaded into a tapped hole and tightened by turning its head. Hex bolts have an external hex head and drive with a socket. These screws may be fully or partially threaded.
Grade 8 hex cap screws are high strength alloy steel fasteners that have a minimum tensile strength of 150, 000 psi. Austenitic grade steels are high in chromium, with varying amounts of nickel, manganese, nitrogen and some carbon. Galvanized Finished Hex Head Fasteners. 316 Stainless Steel Hex Head Cap Screws.
Call us today so we can find the best hex bolt for your application. Hot Forged Bolt and Nut. Cap screws have a washer face under the head, while hex bolts do not. Length 25mm to 500mm.