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Alias: Bent J Bolts, J Anchor Bolts, J Hook Bolts;
J Bolts are headless bolt fasteners with bent profiles in the shape of the letter J, used for anchoring pipes, and round, or square profiles. J bolt provides partial support to structurals due to its open hook design. J anchor bolts are used with 2 hex nuts on either side of the anchoring roof or directly tapped into a hole. J bolts are often called bent hook bolts. Bent j bolts, j anchor bolts, and j hook bolts are other aliases for J bolts. J bolt dimensions are defined in both metric and imperial 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 the J 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.
Manufactured in mild Steel Zinc Plate and Stainless Steel as standard.
Non-standard sizes, materials, and finishes are available to order as specials, including small-volume manufacture, modifications, and bespoke parts made to drawings. Minimum order quantities apply.
Forming | Hot & Cold Forged |
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Metric Size | M0.6 to M100 |
Imperial Size | #0 to 4" |
Threads | UNC, UNF, ISO, BSW & ACME. |
Standards | DIN, ASME, ISO & IS |
Variants | Round J Bolts, Square J Bolts, Metric J Bolts, Imperial J Bolts |
Dimension Standards | ASME B18.31.5 Square, ASME B18.31.5 Round, ASME B18.31.5 Acute, DIN 529, IS 730 |
Material | Alloy Steel, Carbon Steel, Stainless Steel, Hastelloy, Inconel, Incoloy, Nickel, Duplex Steel, Super Duplex, Titanium, Monel, Brass, Aluminum Bronze, Phosphor Bronze, Silicon Bronze, Tantalum, Zirconium |
ASTM Specifications | ASTM A193, ASTM A307, ASTM A449, ASTM A453, ASTM A490, ASTM A540, ASTM A1014, ASTM A1082, ASTM F468, ASTM F593, ASTM F1554, ASTM F2281, ASTM F3125 |