At Ananka Fasteners Pvt Ltd, we manufacture fasteners to the dimensional requirements of ISO 4016. CORRECTION: the input classified ISO 4016 as a nut (‘Hex Head Bolts with Nut’). ISO 4016 is in fact hexagon head BOLTS, product grade C (partial thread) – the coarse-tolerance economy grade, metric equivalent of DIN 601. Thread sizes M5-M64. Head dimensions follow ISO 272 (same nominal s/k as ISO 4014) but with wider grade-C tolerances.
CORRECTION: the input classified ISO 4016 as a nut (‘Hex Head Bolts with Nut’). ISO 4016 is in fact hexagon head BOLTS, product grade C (partial thread) – the coarse-tolerance economy grade, metric equivalent of DIN 601. Thread sizes M5-M64. Head dimensions follow ISO 272 (same nominal s/k as ISO 4014) but with wider grade-C tolerances.
Hexagon head bolt, product grade C, partial thread
Key dimensions for common sizes are listed below.
| Thread size d | Pitch P (mm) | Width across flats s (mm) | Width across corners e (mm) | Head height k (mm) |
|---|---|---|---|---|
| M5 | 0.8 | 8 | 8.63 | 3.5 |
| M6 | 1.0 | 10 | 10.89 | 4.0 |
| M8 | 1.25 | 13 | 14.20 | 5.3 |
| M10 | 1.5 | 16 | 17.59 | 6.4 |
| M12 | 1.75 | 18 | 19.85 | 7.5 |
| M16 | 2.0 | 24 | 26.17 | 10.0 |
| M20 | 2.5 | 30 | 32.95 | 12.5 |
| M24 | 3.0 | 36 | 39.55 | 15.0 |
8g
[‘DIN 601’, ‘ISO 4014’, ‘ISO 4018’, ‘ISO 4034’]
For the official ISO standards catalogue, see the ISO standards listing. This external reference is provided for standards identification; the purchaser should verify the current edition applicable to the order.
We produce ISO 4016 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.
CORRECTION: the input classified ISO 4016 as a nut (‘Hex Head Bolts with Nut’). ISO 4016 is in fact hexagon head BOLTS, product grade C (partial thread) – the coarse-tolerance economy grade, metric equivalent of DIN 601. Thread sizes M5-M64. Head dimensions follow ISO 272 (same nominal s/k as ISO 4014) but with wider grade-C tolerances.
Ananka Fasteners manufactures ISO 4016 in sizes from M5–M24. See the Dimensional Table above for the complete size breakdown.
8g
We produce ISO 4016 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 ISO 4016 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: ISO 4016 requirement, nominal size, material grade, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Dimensions compiled per ISO 4016 and industry references; provided for reference only — confirm against the current edition of the standard before design use.
