Carriage Bolts

Carriage Bolts are round head bolt fasteners with a locking neck style, which prevents turning when the nut is tightened or removed. Round head carriage bolts comes with square neck, oval neck, ribbed neck, fin neck or elliptical neck styles according to the degree of resistance required. Carriage bolts are used with hex nuts or tapped into a hole. Mushroom head bolts, track bolts, timber bolts are other alias of carriage bolts. Carriage 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 carriage 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.

Carriage Bolts Properties

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 Carriage Bolts 2. Partial Threaded Carriage Bolts 3. Metric Carriage Bolts 4. Imperial Carriage Bolts

Carriage Bolts Standards

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

Grades

ASTM A193 ASTM A307 ASTM A320 ASTM A325 ASTM A354 ASTM A394 ASTM A437 ASTM A449 ASTM A453 ASTM A490 ASTM A540 ASTM A1014 ASTM A1082 ASTM F468 ASTM F568M ASTM F593 ASTM F738M ASTM F1554 ASTM F2482 ASTM F3125 ASTM F3148 ASTM A394