At Ananka Fasteners Pvt Ltd, we manufacture fasteners to the dimensional requirements of ASME B18.6.9. Covers dimensional and general requirements for inch-series wing nuts (butterfly nuts) in Types A (cold-formed/hot-forged), B (die-cast) and C (stamped), each in light and regular series. Hand-tightened nuts used where frequent, tool-free assembly and disassembly is required.
Covers dimensional and general requirements for inch-series wing nuts (butterfly nuts) in Types A (cold-formed/hot-forged), B (die-cast) and C (stamped), each in light and regular series. Hand-tightened nuts used where frequent, tool-free assembly and disassembly is required.
Wing nut (inch series)
Key dimensions for common sizes are listed below.
| Nominal Size | Threads per Inch (UNC) | Wing Spread A (in) | Wing Height B (in) | Boss Height G (in) |
|---|---|---|---|---|
| #5 | 40 | 0.72-0.78 | 0.30-0.36 | 0.16-0.22 |
| #10 | 24 | 0.91-0.97 | 0.39-0.45 | 0.22-0.28 |
| 1/4 | 20 | 1.09-1.16 | 0.50-0.56 | 0.28-0.34 |
| 5/16 | 18 | 1.38-1.44 | 0.61-0.67 | 0.34-0.41 |
| 3/8 | 16 | 1.66-1.72 | 0.73-0.80 | 0.41-0.47 |
| 7/16 | 14 | 1.94-2.00 | 0.84-0.91 | 0.47-0.53 |
| 1/2 | 13 | 2.22-2.31 | 0.94-1.06 | 0.50-0.62 |
| 9/16 | 12 | 2.47-2.59 | 1.05-1.17 | 0.56-0.69 |
| 5/8 | 11 | 2.72-2.84 | 1.19-1.31 | 0.62-0.75 |
| 3/4 | 10 | 3.19-3.31 | 1.39-1.52 | 0.75-0.88 |
Class 2B UNC internal threads per ASME B1.1
[‘ASME B18.17’, ‘ASME B18.2.2’, ‘DIN 315’, ‘ASME B1.1’]
For the official ASME standards catalogue, see the ASME standards listing. This external reference is provided for standards identification; the purchaser should verify the current edition applicable to the order.
We produce ASME B18.6.9 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.
Covers dimensional and general requirements for inch-series wing nuts (butterfly nuts) in Types A (cold-formed/hot-forged), B (die-cast) and C (stamped), each in light and regular series. Hand-tightened nuts used where frequent, tool-free assembly and disassembly is required.
Ananka Fasteners manufactures ASME B18.6.9 in sizes from #5–3/4. See the Dimensional Table above for the complete size breakdown.
Class 2B UNC internal threads per ASME B1.1
We produce ASME B18.6.9 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 ASME B18.6.9 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: ASME B18.6.9 requirement, nominal size, material grade, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Dimensions compiled per ASME B18.6.9 and industry references; provided for reference only — confirm against the current edition of the standard before design use.
