Illustrative drawing. Actual product is confirmed to your specification at quotation.
Nuts
Hex Nuts
Hex nuts are the everyday workhorse of bolted assembly. Match the nut property class to the bolt: class 8 with 8.8 bolts, class 10 with 10.9 and class 12 with 12.9. Supplied in metric coarse and fine pitch and in imperial threads.
- Property classes 5, 8, 10 and 12
- Metric coarse, fine and imperial threads
- Matches bolt class for full joint strength
Specifications
- Material
- Carbon steelAlloy steelStainless steel A2 (AISI 304)Stainless steel A4 (AISI 316)
- Grade / property class
- Class 5Class 8Class 10Class 12A2-70A4-80
- Thread
- Metric coarse (ISO 261)Metric fine pitchUNC / UNF (imperial)
- Finish / coating
- PlainBlack oxideZinc plated (clear / yellow)Hot-dip galvanised
- Size range
- Up to M6M8–M12M14–M24M27–M48
- Standards
- ISO 4032DIN 934IS 1364 (Part 3)ASME B18.2.2
Exact dimensions, lengths and availability are confirmed at quotation.
Applications
- Machinery and equipment assembly
- Structural steel connections
- Agricultural and automotive equipment
- Maintenance and repair
- Electrical panels and enclosures
Technical reference
Hex nut dimensions (ISO 4032, style 1)
| Thread | Pitch (mm) | Width across flats s (mm) | Height m max (mm) |
|---|---|---|---|
| M5 | 0.8 | 8 | 4.7 |
| M6 | 1.0 | 10 | 5.2 |
| M8 | 1.25 | 13 | 6.8 |
| M10 | 1.5 | 16 | 8.4 |
| M12 | 1.75 | 18 | 10.8 |
| M16 | 2.0 | 24 | 14.8 |
| M20 | 2.5 | 30 | 18.0 |
| M24 | 3.0 | 36 | 21.5 |
| M30 | 3.5 | 46 | 25.6 |
| M36 | 4.0 | 55 | 31.0 |
Maximum values in mm. DIN 934 uses larger widths across flats for M10, M12, M14 and M22. Confirm against your drawing.
Metric coarse thread pitch (ISO 261)
| Thread size | Coarse pitch (mm) |
|---|---|
| M3 | 0.5 |
| M4 | 0.7 |
| M5 | 0.8 |
| M6 | 1.0 |
| M8 | 1.25 |
| M10 | 1.5 |
| M12 | 1.75 |
| M14 | 2.0 |
| M16 | 2.0 |
| M20 | 2.5 |
| M24 | 3.0 |
| M30 | 3.5 |
| M36 | 4.0 |
| M42 | 4.5 |
| M48 | 5.0 |
Standard coarse pitch for each metric thread diameter. Fine pitches are available for most sizes.
Related and complementary fasteners
Request a quote for Hex Nuts
Give us the size, grade, finish and quantity. We reply within one business day.
Common questions
- Which sizes and grades of hex nuts do you supply?
- We supply hex nuts in Up to M6, M8–M12, M14–M24, M27–M48 size bands and grades/classes including Class 5, Class 8, Class 10, Class 12, A2-70, A4-80. Exact availability, dimensions and lead time are confirmed at quotation.
- Which standards do hex nuts follow?
- Common standards are ISO 4032, DIN 934, IS 1364 (Part 3), ASME B18.2.2. 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.