Nuts
Hex and other nuts in carbon steel, alloy steel, stainless steel and duplex steel, supplied with matching bolts and washers or on their own.
- Finishes
- Plain, Zinc plated, Hot-dip galvanised, Dacromet, Geomet, Zinc-nickel plated, Mechanically galvanised, PTFE coated
- Materials
- Carbon steel, Alloy steel, Stainless steel, Duplex steel
- Inspection
- Before dispatch · video on request
- Incoterms
- All, EXW to DDP
Specification.
Stated as we supply it. Anything not listed is made to your drawing or standard; ask and we confirm before quoting.
| Standards | DIN 934, DIN 555, DIN 6915, IS 6623, ISO 7414, ASTM A194, ASME B18.2.2, ASME B18.16.6, ASTM A563, ISO 4032, DIN 982, DIN 985, DIN 929 |
|---|---|
| Materials | Carbon steel, Alloy steel, Stainless steel, Duplex steel |
| Grades | 4, 5, 6, 8, 10, 12, ASTM A194 2H, 8S, 10S, SAE Gr 5, SAE Gr 8, A563 DH |
| Finishes | Plain, Zinc plated, Hot-dip galvanised, Dacromet, Geomet, Zinc-nickel plated, Mechanically galvanised, PTFE coated |
Types: hex, heavy hex for structural (HSFG) bolts, square, flange (including serrated flange), coupling, nylon-insert lock, dome, wheel and commercial nuts. Property classes 4 to 12, SAE grades 5 and 8, ASTM A563 DH, and ASTM A194 2H for stud bolts.
Reference data by size.
For planning and freight. Your order is quoted to the standard, class and finish you specify.
| Size | Pitch (mm) | Across flats ISO (mm) | Across flats DIN (mm) | Height ISO 4032 (mm) | Height DIN 934 (mm) | Steel g per piece (ISO) |
|---|---|---|---|---|---|---|
| M6 | 1.00 | 10 | 10 | 5.2 | 5.0 | 2.6 |
| M8 | 1.25 | 13 | 13 | 6.8 | 6.5 | 5.6 |
| M10 | 1.50 | 16 | 17 | 8.4 | 8.0 | 10.4 |
| M12 | 1.75 | 18 | 19 | 10.8 | 10.0 | 15.9 |
| M16 | 2.00 | 24 | 24 | 14.8 | 13.0 | 38.2 |
| M20 | 2.50 | 30 | 30 | 18.0 | 16.0 | 72.7 |
| M24 | 3.00 | 36 | 36 | 21.5 | 19.0 | 125.0 |
How to specify it.
A complete order line removes most of the back-and-forth. Write it in this order:
Hexagon nut - ISO 4032 - M12 - 8 - zinc plated
- Class not matchedPair the nut class with the bolt: class 8 nuts with 8.8 bolts, class 10 with 10.9.
- ISO or DINISO 4032 nuts are taller than DIN 934 and differ in across flats for M10, M12, M14 and M22.
- Galvanized boltsHot-dip galvanized bolts and rod need nuts tapped oversize; order them as a set.
Photographs.
Inspection you can watch.
Every order is visually inspected before dispatch. You choose how closely you look.
Before dispatch
Visual inspection against the agreed specification.
On a video call
Watch the inspection live, on request.
Third party
An inspection agency of your choice, on request.
What to send for a quote.
The more of this you include, the faster and firmer the quotation.
- Drawing, sample photo or the standard the part must meet
- Material, grade or property class, and finish
- Size or dimensions, and quantity per order and per year
- Destination port or city, and the Incoterm you prefer
- Documents you need with the shipment, and whether you want video or third-party inspection
Questions buyers ask.
Are ISO 4032 and DIN 934 nuts interchangeable?
They fit the same bolts. ISO 4032 nuts are taller, and across flats differ for M10, M12, M14 and M22, so check spanners and drawings before switching.
Which nut class goes with which bolt?
Class 8 nuts with 8.8 bolts and class 10 nuts with 10.9 bolts. A nut of a higher class can replace a lower one.
