At Ananka Fasteners Pvt Ltd, we manufacture fasteners to the dimensional requirements of ASME B18.31.2. Inch-series continuous-thread studs, double-end studs, and flange-bolting studs (stud bolts). Defines UNC/UNF/8UN thread series and length tolerances rather than fixed lengths; representative diameter/thread data with common lengths below.
Inch-series continuous-thread studs, double-end studs, and flange-bolting studs (stud bolts). Defines UNC/UNF/8UN thread series and length tolerances rather than fixed lengths; representative diameter/thread data with common lengths below.
Stud / stud bolt (inch series)
Key dimensions for common sizes are listed below.
| Nominal Size | Threads per Inch (UNC) | Major Dia. max (in) | Common Lengths (in) |
|---|---|---|---|
| 1/4 | 20 | 0.2500 | 1-6 |
| 3/8 | 16 | 0.3750 | 1.5-8 |
| 1/2 | 13 | 0.5000 | 2-12 |
| 5/8 | 11 | 0.6250 | 2.5-12 |
| 3/4 | 10 | 0.7500 | 3-18 |
| 7/8 | 9 | 0.8750 | 3.5-24 |
| 1 | 8 | 1.0000 | 4-24 |
| 1-1/4 | 7 | 1.2500 | 5-36 |
Class 2A UNC external threads per ASME B1.1
[‘ASME B18.31.1M’, ‘ASME B18.31.3’, ‘ASME B16.5’, ‘ASTM A193’, ‘ASTM A320’]
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 B18.31.2 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.
Inch-series continuous-thread studs, double-end studs, and flange-bolting studs (stud bolts). Defines UNC/UNF/8UN thread series and length tolerances rather than fixed lengths; representative diameter/thread data with common lengths below.
Ananka Fasteners manufactures ASME B18.31.2 in sizes from 1/4–1-1/4. See the Dimensional Table above for the complete size breakdown.
Class 2A UNC external threads per ASME B1.1
We produce ASME B18.31.2 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 B18.31.2 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 B18.31.2 requirement, nominal size, material grade, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Dimensions compiled per ASME B18.31.2 and industry references; provided for reference only — confirm against the current edition of the standard before design use.
