Description of Material
The following Bolting Material grades are covered by standard API 20F BSL -2/3:
API 6ACRA 718 (120 ksi)
ASTM A453/A453M 660D
All products shall meet the requirements of the referenced ASTM specification, and the modifications specified by the API 20F standard and the relevant bolting specification level.
API 20F BSL -2/3: Forms
| LoneStar Manufacture | ||
| Stud Bolts | ✓ | |
| Studding | ✓ | |
| Hexagon Headed Bolting | ✓ | |
| Socket Headed Bolting | ✓ | |
| Double Ended and Waisted Studs | ✓ | |
| Associated OEM Parts | ✓ |
API 20F BSL -2/3: Sizes and Threads
| LoneStar Manufacture | ||
| Metric Coarse | ✓ | |
| Metric Fine | ✓ | |
| Imperial UNRC+ | ✓ | |
| Imperial 8UNR | ✓ | |
| Imperial UNF | ✓ | |
| ACME | ✓ | |
| Metric sizes available | Up to M100 | |
| Imperial sizes available | Up to 4.00″ |
API 20F BSL -2/3: Requirements as per BSL
| BSL – 2 | Threads shall be UNRC/UNR Furnace calibration to API 6A Annex M Reduction Ratio 4:1 min Thermocouple to be attached during heat treatment Furnace loading and Quench media to API 6HT, and will include furnace load diagrams |
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| BSL – 3 | As per BSL-2 Product analysis in accordance with ASTM A453 Grade 660 Class D, API 6ACRA or UNS R30035 to be performed. All testing by raw material supplier shall be performed by us. |
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| Testing samples shall be carried out as per standard and relevant BSL |
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