At Ananka Fasteners Pvt Ltd, we manufacture fasteners to the dimensional requirements of ASME B5.1M. Input description (‘T-Bolts (Metric)’) is only partly accurate and has been corrected: ASME B5.1M-1985 (R2014) is a machine-tool standard titled ‘T-Slots – Their Bolts, Nuts, and Tongues.’ It defines the metric T-slot profile and the mating T-bolts, T-nuts and locating tongues used to clamp workpieces and fixtures to machine tables. Table shows nominal metric T-slot widths and the recommended T-bolt thread size.
Input description (‘T-Bolts (Metric)’) is only partly accurate and has been corrected: ASME B5.1M-1985 (R2014) is a machine-tool standard titled ‘T-Slots – Their Bolts, Nuts, and Tongues.’ It defines the metric T-slot profile and the mating T-bolts, T-nuts and locating tongues used to clamp workpieces and fixtures to machine tables. Table shows nominal metric T-slot widths and the recommended T-bolt thread size.
Metric T-slot profile with mating T-head bolt and T-nut
Key dimensions for common sizes are listed below.
| T-slot Width A (mm) | Recommended Bolt Thread | Throat Depth (mm) | Total Slot Depth (mm) |
|---|---|---|---|
| 5 | M4 | 5 | 13 |
| 6 | M5 | 6 | 16 |
| 8 | M6 | 8 | 20 |
| 10 | M8 | 10 | 25 |
| 12 | M10 | 12 | 30 |
| 14 | M12 | 14 | 36 |
| 18 | M16 | 18 | 45 |
| 22 | M20 | 22 | 56 |
| 28 | M24 | 28 | 68 |
Bolt threads per ISO metric (ASME B1.13M), Class 6g
[‘ISO 299 (T-slots)’, ‘DIN 650 / DIN 508 (T-slots and T-nuts)’, ‘ASME B5.1M-1985 (R2014)’]
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 B5.1M 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.
Input description (‘T-Bolts (Metric)’) is only partly accurate and has been corrected: ASME B5.1M-1985 (R2014) is a machine-tool standard titled ‘T-Slots – Their Bolts, Nuts, and Tongues.’ It defines the metric T-slot profile and the mating T-bolts, T-nuts and locating tongues used to clamp workpieces and fixtures to machine tables. Table shows nominal metric T-slot widths and the recommended T-bolt thread size.
Ananka Fasteners manufactures ASME B5.1M in sizes from 5–28. See the Dimensional Table above for the complete size breakdown.
Bolt threads per ISO metric (ASME B1.13M), Class 6g
We produce ASME B5.1M 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 B5.1M 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 B5.1M requirement, nominal size, material grade, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
Dimensions compiled per ASME B5.1M and industry references; provided for reference only — confirm against the current edition of the standard before design use.
