Structural Bolt vs Hex Bolt: How Are They Different?
Compare structural bolts and general hex bolts by specification, grade and intended use, and see what details to include in a bolt RFQ.
A structural bolt and a general hex bolt may look similar, but they should not be selected by appearance alone. The governing drawing, standard, grade and joint requirement determine which fastener is appropriate.
Quick answer: structural bolt vs hex bolt
A Structural Bolt is supplied against a structural bolting specification and grade requirement. A Hex Bolt is a broader fastener type used across machinery, fabrication and general industrial assemblies. The project specification should decide whether a structural bolting standard is required.
What is listed for structural bolts?
The Structural Bolt page lists ASTM A325, A490 and IS 3757 references with 8.8, 10.9, A325 and A490 grade designations. For related grade context, see A325 vs B7 vs 2H.
Can a normal hex bolt replace a structural bolt?
Do not substitute one simply because the diameter and length match. If a structural standard, grade or assembly is specified, the quotation should follow that requirement. If the drawing only calls for a general hex bolt, quote the exact grade, size, thread and finish stated on the document.
What should you send for a bolt quotation?
Send the standard, grade, diameter, thread, length, finish, quantity and any nut or washer set requirement. Browse the Bolts range or send the drawing or specification for a quotation.