At Ananka Fasteners Pvt Ltd, we manufacture fasteners to the dimensional requirements of DIN 439 A/B. Hexagon thin (jam/lock) nuts, chamfered, roughly half the height of a standard hex nut. DIN 439-1 unchamfered and DIN 439-2 chamfered, in product grades A and B; supplied with metric coarse and fine pitches. Used as lock nuts and in low-clearance assemblies.
Hexagon thin (jam/lock) nuts, chamfered, roughly half the height of a standard hex nut. DIN 439-1 unchamfered and DIN 439-2 chamfered, in product grades A and B; supplied with metric coarse and fine pitches. Used as lock nuts and in low-clearance assemblies.
Hexagon thin nut
Key dimensions for common sizes are listed below.
| Nominal Size (M) | Width Across Flats s (mm) | Width Across Corners e (mm) | Thickness m (mm) |
|---|---|---|---|
| M5 | 8 | 8.79 | 2.7 |
| M6 | 10 | 11.05 | 3.2 |
| M8 | 13 | 14.38 | 4.0 |
| M10 | 16 | 17.77 | 5.0 |
| M12 | 18 | 20.03 | 6.0 |
| M16 | 24 | 26.75 | 8.0 |
| M20 | 30 | 32.95 | 10.0 |
| M24 | 36 | 39.55 | 12.0 |
6H (internal); coarse and fine pitch versions
ISO 4035 / ISO 8675 (chamfered thin nuts), DIN 936 (hex thin nut, wrenching), DIN 934 (standard hex nut)
For the official DIN standards catalogue, see the DIN standards listing. This external reference is provided for standards identification; the purchaser should verify the current edition applicable to the order.
We produce DIN 439 A/B fasteners in carbon and alloy steel, austenitic, duplex and super-duplex stainless, and high-nickel, titanium and copper alloys — for structural, flanged, machinery and process applications worldwide.
For technical documentation and quotations, buyers can also review the Ananka Fasteners manufacturing and supply range or contact the team through the fastener enquiry and technical support page.
Ananka Fasteners supplies every lot with full material traceability and third-party testing on request.
Hexagon thin (jam/lock) nuts, chamfered, roughly half the height of a standard hex nut. DIN 439-1 unchamfered and DIN 439-2 chamfered, in product grades A and B; supplied with metric coarse and fine pitches. Used as lock nuts and in low-clearance assemblies.
Ananka Fasteners manufactures DIN 439 A/B in sizes from M5–M24. See the Dimensional Table above for the complete size breakdown.
6H (internal); coarse and fine pitch versions
We produce DIN 439 A/B fasteners in carbon and alloy steel, austenitic, duplex and super-duplex stainless, and high-nickel, titanium and copper alloys — for structural, flanged, machinery and process applications worldwide.
Yes. For a quotation, provide the required nominal size, material grade, quantity and any inspection or certificate requirements.
Need a fastener manufactured to DIN 439 A/B for an industrial project? Send the required fastener type, size, material grade, quantity and certification requirements to Ananka Fasteners. Our team can review the requirement and provide technical and commercial information for standard or custom configurations.
Recommended RFQ details: DIN 439 A/B requirement, nominal size, material grade, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Dimensions compiled per DIN 439 A/B and industry references; provided for reference only — confirm against the current edition of the standard before design use.
