At Ananka Fasteners Pvt Ltd, we manufacture fasteners to the dimensional requirements of DIN 7349. DIN 7349 specifies thick (heavy) flat washers with a large outside diameter, used under bolts and with clamping/spring-pin assemblies where a robust, high-thickness bearing washer is required. Note: the original description ‘Flat Washers for Bolts w/ Spring Pins’ is loose – DIN 7349 is more precisely a thick flat washer for bolts with heavy clamping loads.
DIN 7349 specifies thick (heavy) flat washers with a large outside diameter, used under bolts and with clamping/spring-pin assemblies where a robust, high-thickness bearing washer is required. Note: the original description ‘Flat Washers for Bolts w/ Spring Pins’ is loose – DIN 7349 is more precisely a thick flat washer for bolts with heavy clamping loads.
Thick (heavy) flat washer
Key dimensions for common sizes are listed below.
| For bolt | Inside diameter d1 (mm) | Outside diameter d2 (mm) | Thickness s (mm) |
|---|---|---|---|
| M3 | 3.2 | 9 | 1.0 |
| M4 | 4.3 | 12 | 1.6 |
| M5 | 5.3 | 15 | 2.0 |
| M6 | 6.4 | 17 | 3.0 |
| M8 | 8.4 | 21 | 4.0 |
| M10 | 10.5 | 25 | 4.0 |
| M12 | 13.0 | 30 | 6.0 |
| M16 | 17.0 | 40 | 6.0 |
| M20 | 21.0 | 44 | 8.0 |
| M24 | 25.0 | 50 | 10.0 |
N/A (washer)
[‘DIN 7989’, ‘DIN 125’, ‘DIN 6340’]
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 7349 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.
DIN 7349 specifies thick (heavy) flat washers with a large outside diameter, used under bolts and with clamping/spring-pin assemblies where a robust, high-thickness bearing washer is required. Note: the original description ‘Flat Washers for Bolts w/ Spring Pins’ is loose – DIN 7349 is more precisely a thick flat washer for bolts with heavy clamping loads.
Ananka Fasteners manufactures DIN 7349 in sizes from M3–M24. See the Dimensional Table above for the complete size breakdown.
N/A (washer)
We produce DIN 7349 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 7349 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 7349 requirement, nominal size, material grade, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Dimensions compiled per DIN 7349 and industry references; provided for reference only — confirm against the current edition of the standard before design use.
