DIN 985 Stainless Steel Nylon Insert Lock Nuts

DIN 985 (DIN985) stainless steel nylon insert lock nuts for metric fastener assemblies.

Materials: 304, 316 and 316L (Ni10). Compare coarse and fine threads, markings, treatments and blue or white nylon insert options below.

Stocked items: dispatch in around 3 days. Availability and timing are confirmed with your quotation.

Request a Quote

Send your thread size, material and quantity. Drawings and files can be attached to your enquiry.

SKU: N/A Category: Brand:

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.

Request a Quote

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.

Scroll to Top