Hex head bolts have hexagonal heads for firm wrench tightening. These bolts securely fasten infrastructure that requires high-tensile strength. They are most frequently used in confined spaces because wrenches can access the hex heads from all angles.
Heavy hex head structural bolts:
Heavy hex head structural bolts have shorter shanks and thread lengths than standard hex bolts. Structural bolts secure steel-to-steel parts and connections. They have hex heads that tighten with ratchets or spanner torque wrenches. These rugged steel bolts come in galvanized, yellow zinc, and black oxide finishes. Standard heavy hex bolts have larger, thicker heads than regular hex bolts and are most often used in high-temperature, high-strength industrial applications. Heavy hex bolts with forged heads are also commonly used as headed anchor bolts. All are designed to be used with hex nuts for a secure fit.
A325 Structural Bolts: ASTM A325 bolts are heavy hex bolts made of medium carbon steel with a flat bearing surface, washer faced, and chamfered point. These bolts are one of the most common heavy hex fasteners, usually used for structural support in steel construction.
A490 Structural Bolts: – The A490 structural bolts are heated-treated alloy, heavy hex fasteners designed to join steel-to-steel connections. Heavier than A325 bolts, they have a flat bearing surface, washer faced, and chamfered point. These heat-treated bolts are corrosion-resistant and are designed for use in harsh environments. They are used in structural steel joints in heavy construction applications that need high tensile strength.
Class 10.9 Structural Bolts: High-strength Grade 10.9 structural bolts are made using carbon steel, its alloy, and low carbon boron steel. These bolts have been quenched and tempered. They are mainly used in exterior construction and building connections as well as automotive areas. These bolts have a high-tensile strength and offer good wear resistance. Class 10.9 bolts come in a black oxide finish and are partially threaded for precise grip in structural joints.
A307B Heavy Hex Bolts: Grade B A307 heavy hex bolts are externally threaded fasteners made of carbon steel. These bolts are very similar to standard hex bolts however the head size across the flats and corners is larger providing a broader bearing surface. A307B bolts come in a black oxide finish or hot-dipped galvanized steel for corrosion resistance and are commonly used in piping systems and other high-pressure applications. Black oxide coatings are corrosion resistant in dry environments. Hot-dipped galvanized steel coatings are more corrosion resistant than zinc plating, giving these bolts a thicker coating than other finishes.
AT Precision metal we also make Socket head bolts, Lag bolts, T head bolts, Slotted head bolts, square head bolts, Shoulder bolts, Round head bolts,, Flange bolts, Carriage bolts, Grubs screws, self-tapping screws, and self-drilling screws.
These products come in various materials such as carbon steel, stainless steel, high tensile steel, mild steel, Duplex, special alloys, aluminium, and brass. There are various thread types such as metric, metric fine, BSW, BSF, UNC, UNF.
Standards: ASTM/ ASME/ BS/ DIN/ JIS/ BS/ EN/ ISO
|THREAD FORMS (OTHER FORMS CAN BE SUPPLIED ON REQUEST)|
DIA RANGE: M6 TO M64 AND ¼” TO 2” (Bigger size can be manufactured as per customer requirement)
- SELF COLOR
- BLACK OXIDIZING
- MECHANICAL GALVANIZED
- HOT DIP GALVANIZED
- ELECTRO ZINC PLATING
- ZINC DICHROMATE
- ZINC NICKEL
- ZINC YELLOW
- ELECTROLESS NICKEL PLATING
- ZINC BICHROMATE
- CERAMIC COATING
- TECTYL COATING
- TAKECOAT 1000
- MOYLKOTE COATING
- ZINC FLATE COATING
- PTFE XYLAN/XYLAR COATING
- DACROMET COATING
- AS PER CLIENT SPECIFICATIONS