Find Your DIN 985 Specification
Compare DIN 985 nylon insert lock nuts by stainless steel grade, thread size, marking and treatment. Open a material group to see the listed thread options and nylon insert colours.
Thread dimensions are in millimetres. Select the exact diameter × pitch in the same row as your required version. On mobile, swipe a table sideways to see all columns.
304 Stainless Steel · 60 catalogue items
| Thread / insert | Marking | Treatment | Thread options
diameter × pitch (mm) |
|---|---|---|---|
| Coarse thread
Blue nylon insert |
Unmarked | Not specified | M2 × 0.4 · M2.5 × 0.45 · M3 × 0.5 · M4 × 0.7 · M14 × 2 · M18 × 2.5 |
| Coarse thread
Blue nylon insert |
Unmarked | Wax treated | M3 × 0.5 · M4 × 0.7 |
| Coarse thread
Blue nylon insert |
A2-70 TonG | Not specified | M5 × 0.8 · M6 × 1.0 · M8 × 1.25 · M10 × 1.5 · M12 × 1.75 · M14 × 2.0 · M16 × 2.0 · M18 × 2.5 · M20 × 2.5 · M22 × 2.5 · M24 × 3.0 · M27 × 3 · M30 × 3.5 · M33 × 3.5 · M36 × 4 |
| Coarse thread
Blue nylon insert |
A2-70 TonG | “锁无忧” treatment; confirm specification | M5 × 0.8 · M6 × 1.0 · M8 × 1.25 · M10 × 1.5 · M12 × 1.75 · M14 × 2.0 · M16 × 2 · M20 × 2.5 |
| Coarse thread
Blue nylon insert |
A2-70 TonG | Wax treated | M5 × 0.8 · M6 × 1.0 · M8 × 1.25 · M10 × 1.5 · M12 × 1.75 · M16 × 2 · M20 × 2.5 |
| Coarse thread
Blue nylon insert |
A2-70 TonG | Coated; confirm system | M5 × 0.8 · M6 × 1.0 · M8 × 1.25 · M10 × 1.5 · M12 × 1.75 · M14 × 2.0 · M16 × 2.0 · M18 × 2.5 · M20 × 2.5 |
| Fine thread
Blue nylon insert |
A2-70 TonG | Not specified | M6 × 0.75 · M8 × 1 · M10 × 1.25 · M12 × 1.5 · M14 × 1.5 · M16 × 1.5 |
| Special fine thread
Blue nylon insert |
A2-70 TonG | Not specified | M8 × 0.75 · M10 × 1 · M12 × 1.25 · M18 × 1.5 · M20 × 1.5 |
| Coarse thread
White nylon insert |
A2-70 TonG | Not specified | M10 × 1.5 |
| Extra-fine thread
Blue nylon insert |
A2-70 TonG | Not specified | M12 × 1.0 |
316 Stainless Steel · 43 catalogue items
| Thread / insert | Marking | Treatment | Thread options
diameter × pitch (mm) |
|---|---|---|---|
| Coarse thread
Blue nylon insert |
Unmarked | Not specified | M3 × 0.5 · M4 × 0.7 |
| Coarse thread
Blue nylon insert |
Unmarked | Coated; confirm system | M3 × 0.5 · M4 × 0.7 |
| Coarse thread
Blue nylon insert |
A4-80 TonG | Not specified | M5 × 0.8 · M6 × 1.0 · M8 × 1.25 · M10 × 1.5 · M12 × 1.75 · M14 × 2.0 · M16 × 2.0 · M18 × 2.5 · M20 × 2.5 |
| Coarse thread
Blue nylon insert |
A4-80 TonG | “锁无忧” treatment; confirm specification | M5 × 0.8 · M6 × 1 · M8 × 1.25 · M10 × 1.5 · M12 × 1.75 · M16 × 2 · M20 × 2.5 |
| Coarse thread
Blue nylon insert |
A4-80 TonG | Wax treated | M5 × 0.8 · M6 × 1.0 · M8 × 1.25 · M10 × 1.5 · M12 × 1.75 · M16 × 2.0 · M20 × 2.5 |
| Coarse thread
Blue nylon insert |
A4-80 TonG | Coated; confirm system | M5 × 0.8 · M6 × 1.0 · M8 × 1.25 · M10 × 1.5 · M12 × 1.75 · M14 × 2.0 · M16 × 2.0 · M20 × 2.5 |
| Coarse thread
White nylon insert |
A4-80 TonG | Not specified | M20 × 2.5 |
| Coarse thread
Blue nylon insert |
A4-70 TonG | Not specified | M20 × 2.5 · M22 × 2.5 · M27 × 3.0 · M30 × 3.5 · M33 × 3.5 · M36 × 4.0 |
316L (Ni10) Stainless Steel · 2 catalogue items
| Thread / insert | Marking | Treatment | Thread options
diameter × pitch (mm) |
|---|---|---|---|
| Coarse thread
Blue nylon insert |
A4-80 TonG | Not specified | M10 × 1.5 |
| Coarse thread
Blue nylon insert |
A4L-80 TonG | Bright-cleaned | M24 × 3.0 |
Fine-thread labels follow the catalogue; use the exact pitch shown when requesting a quote. Confirm the required insert colour and any coating or inspection requirements with your enquiry.
Fast Dispatch for Stocked Items
Items available in Tongming stock can usually be dispatched in around 3 days. Stock and dispatch timing are confirmed with your quotation.
Send Your Specification
Include DIN 985, material, diameter × pitch, marking, insert colour, treatment and quantity. Attach a drawing or inspection specification when your project has additional requirements.
Fastener supply experience since 2005. Nanjing Tongming provides experienced product coordination and competitive quotations for project and repeat purchasing.
Markings, dimensions, insert colours and treatments depend on the quoted item. Catalogue listing does not indicate live stock.






