PRODUCTThin Hex Nut DIN 439 Carbon Steel Fastener for Machinery and Space Limited Fastening
DIN 439-1 Thin Hex Nuts are unchamfered carbon steel hex nuts in Product Grade B. Available in standard thread sizes from M1.6 to M10, they are suitable for machinery, locking applications, compact bolt connections, and fastening positions with limited installation space.
- Standard
- DIN 439-1
- Product Grade
- Grade B
- Material
- Carbon Steel
Product Details
Thin Hex Nuts are designed for bolt-and-nut connections where a lower nut height is required. This product follows DIN 439-1 and uses an unchamfered hexagon thin nut design. The carbon steel nut has a minimum hardness requirement of 110 HV. Standard thread sizes range from M1.6 to M10.e. Custom sizes are also available according to order requirements.

Product Specifications
| Item | Details |
|---|---|
| Product Name | Thin Hex Nut |
| Standard | DIN 439-1 |
| Product Type | Unchamfered Thin Hex Nut |
| Product Grade | Grade B |
| Material | Carbon Steel |
| Carbon Steel Property | Minimum 110 HV |
| Thread Type | Metric Thread |
| Standard Thread Sizes | M1.6 / M2 / M2.5 / M3 / M4 / M5 / M6 / M8 / M10 |
| Non-Preferred Size | M3.5 |
| Customization | Custom sizes available |
| Main Functions | Locking, Space-Limited Fastening |
| Main Applications | Machinery, Compact Bolt Connections, General Assembly |
| Packaging | Carton or Bag Packing |
DIN 439-1 Dimension Reference
| Thread Size | Coarse Pitch P | Fine Pitch P | Across Corners e Min. | Nut Height m Max. | Nut Height m Min. | Across Flats s Max. | Across Flats s Min. | Approx. Weight per 1,000 pcs |
|---|---|---|---|---|---|---|---|---|
| M1.6 | 0.35 mm | — | 3.28 mm | 1 mm | 0.6 mm | 3.2 mm | 2.9 mm | 0.06 kg |
| M2 | 0.4 mm | — | 4.18 mm | 1.2 mm | 0.8 mm | 4 mm | 3.7 mm | 0.11 kg |
| M2.5 | 0.45 mm | — | 5.31 mm | 1.6 mm | 1.2 mm | 5 mm | 4.7 mm | 0.22 kg |
| M3 | 0.5 mm | — | 5.87 mm | 1.8 mm | 1.4 mm | 5.5 mm | 5.2 mm | 0.29 kg |
| M3.5* | 0.6 mm | — | 6.44 mm | 2 mm | 1.6 mm | 6 mm | 5.7 mm | 0.37 kg |
| M4 | 0.7 mm | — | 7.5 mm | 2.2 mm | 1.8 mm | 7 mm | 6.64 mm | 0.57 kg |
| M5 | 0.8 mm | — | 8.63 mm | 2.7 mm | 2.3 mm | 8 mm | 7.64 mm | 0.83 kg |
| M6 | 1 mm | — | 10.89 mm | 3.2 mm | 2.72 mm | 10 mm | 9.64 mm | 1.6 kg |
| M8 | 1.25 mm | 1 mm | 14.2 mm | 4 mm | 3.52 mm | 13 mm | 12.57 mm | 3.2 kg |
| M10 | 1.5 mm | 1 mm | 18.72 mm | 5 mm | 4.52 mm | 17 mm | 16.57 mm | 7.2 kg |
Compact Carbon Steel Nut for Machinery
The reduced nut height makes DIN 439-1 Thin Hex Nuts suitable for machinery and compact fastening positions. They can be used where a standard-height hex nut is not preferred because of limited assembly space. The available thread sizes allow buyers to select the appropriate nut based on the matching bolt diameter, pitch, wrench size, and required nut height.
Customization Available
Custom sizes are available for DIN 439-1 Thin Hex Nuts. Buyers can provide their required thread size, thread pitch, nut height, across-flats size, matching bolt specification, and quantity for quotation.
Applications
DIN 439-1 Carbon Steel Thin Hex Nuts are suitable for:
Machinery assembly
Locking applications
Space-limited fastening positions
Compact bolt-and-nut assemblies
General mechanical connections

Information Needed for a Quote
To prepare a quotation, please provide:
Required standard: DIN 439-1
Required thread size
Required thread pitch
Required nut height or dimension requirement
Matching bolt specification
Required quantity
Custom size requirement, if applicable
FAQ
1. What type of Thin Hex Nut is this?
It is an unchamfered Thin Hex Nut in Product Grade B.
2. What thread sizes are available?
Standard sizes include M1.6, M2, M2.5, M3, M4, M5, M6, M8, and M10. M3.5 is a non-preferred size.
3. Can I request a custom Thin Hex Nut size?
Yes. Custom sizes are available according to the required thread size, pitch, nut height, matching bolt, and quantity.
4. Why use a Thin Hex Nut?
A Thin Hex Nut has a reduced nut height and is suitable for compact assemblies, locking applications, and fastening positions with limited installation space.
---
Looking forDIN 439-1 Carbon Steel Thin Hex Nutsfor machinery or space-limited fastening?
Send usyour required thread size, pitch, nut height, matching bolt specification, quantity, and customization requirement for a quotation.