Machine Bolts
Source machine bolts from India's verified manufacturers and exporters on Himalay. Browse the full range for industrial and export applications.
About Machine Bolts
Machine bolts are externally threaded fasteners with a full or partial machined thread, used to clamp two or more components in general machinery, equipment frames, gearboxes, flanges and assemblies where a nut or tapped hole provides the mating thread. They are the workhorse fastener of mechanical engineering: dimensionally standardised, available across a wide strength range and easy to torque to a defined preload. The category covers hex-head, square-head and heavy-hex machine bolts in metric and inch series. Dimensions and head forms typically follow ISO 4014/4017 (hex), DIN 931/933 (partial and full thread) and ASME B18.2.1 for inch heavy-hex, with thread forms to ISO metric coarse and fine or UNC/UNF. Strength is set by ISO 898-1 property classes 8.8, 10.9 and 12.9 or by SAE J429 grades 5 and 8 in the inch system, where class 8.8 corresponds to roughly 800 MPa tensile. Materials range from medium-carbon and alloy steels to stainless A2/A4 (304/316) for corrosive duty and brass for electrical work. Tolerances on thread fit (6g/6H) and head bearing surface are controlled for repeatable assembly. Coatings include zinc electroplate, hot-dip galvanizing to ASTM F2329, zinc-flake (Geomet/Dacromet) and Xylan/PTFE for controlled friction. Himalay coordinates material traceability with EN 10204 3.1 certificates, mechanical test reports covering tensile, proof load and hardness, thread-gauge inspection and salt-spray data for coated lots; PED-CE documentation for bolts entering EU pressure assemblies and SABER routing for GCC entry are coordinated as part of the standard order flow.
