Machine Bolts are regular hex head or square head bolts with externally threaded body, used with a nut or tapped hole. Machine bolts comes in variety of other head styles. Hex head and square head gives effective wrenching capabilities for bolting. Machine bolts are used with hex nuts or a tapped hole. Machine bolt dimensions are defined in both metric and imperials sizes with unified national coarse pitch (UNC), fine pitch (UNF), fixed pitch (UN) and iso metric thread profile. These are produced across all material categories and astm specifications.
Browse the page for information on machine bolt manufacturing process, forming method, available sizes, sub-types, thread types, metric and imperial dimension standards, weight charts, torque values, material categories, grades and astm specifications.
Forming | Hot & Cold Forged |
Metric Size | M10 to M100 |
Imperial Size | 3/8 to 8" |
Threads | UNC, UNF, ISO, BSW & ACME. |
Standards | ASME,BS,DIN,ISO,UNI,DIN-EN |
Sub types | 1. Fully Threaded Machine Bolts 2. Partial Threaded Machine Bolts 3. Metric Machine Bolts 4. Imperial Machine Bolts |
ASME B18.2.1 | 3/8 inch to 3 inch |
BS 1769 | ½ inch to 2 inch |
ASME B18.2.3.6M | M12 to M36 |
ASME B18.2.3.7M | M16 to M36 |
DIN 6914 | M12 to M36 |
ISO 7412 | M12 to M36 |
UNI 5712 | M12 to M36 |
DIN-EN 14399-4 | M12 to M36 |