Illustrative drawing. Actual product is confirmed to your specification at quotation.
Bolts
Heavy Hex Bolts
A heavy hex bolt has a wider head across flats than a regular hex bolt, spreading load on the bearing surface. Suited to heavy equipment and general heavy-duty bolting.
- Large bearing area under the head
- Imperial and metric
- Alloy steel heat treated options
Specifications
- Material
- Carbon steelAlloy steelStainless steel A2 (AISI 304)Stainless steel A4 (AISI 316)
- Grade / property class
- ASTM A307ASTM A449ASTM A354 BD8.810.9
- Thread
- UNC / UNF (imperial)Metric coarse (ISO 261)
- Finish / coating
- PlainBlack oxideZinc plated (clear / yellow)Hot-dip galvanised
- Size range
- M8–M12M14–M24M27–M48Above M48Imperial (inch)
- Standards
- ASME B18.2.1 (heavy hex)ASTM A307 Grade A / BASTM A449ASTM A354 BC / BD
Exact dimensions, lengths and availability are confirmed at quotation.
Applications
- Heavy machinery and mining equipment
- Press and crusher assemblies
- Large frames and base plates
- Cranes and lifting equipment
- Rail and transport equipment
Related and complementary fasteners
Request a quote for Heavy Hex Bolts
Give us the size, grade, finish and quantity. We reply within one business day.
Common questions
- Which sizes and grades of heavy hex bolts do you supply?
- We supply heavy hex bolts in M8–M12, M14–M24, M27–M48, Above M48, Imperial (inch) size bands and grades/classes including ASTM A307, ASTM A449, ASTM A354 BD, 8.8, 10.9. Exact availability, dimensions and lead time are confirmed at quotation.
- Which standards do heavy hex bolts follow?
- Common standards are ASME B18.2.1 (heavy hex), ASTM A307 Grade A / B, ASTM A449, ASTM A354 BC / BD. Tell us the standard you need and we will quote to it.
- Can you supply in bulk or with test certificates?
- Yes. We quote for loose lots and scheduled bulk supply across India, and can share manufacturer test certificates where available. Confirm the requirement when you request a quote.
Need a quote on bulk or custom industrial supply?
Share your specifications and quantities — our technical team will respond with pricing and lead time within one business day.