Description of Material
Lonestar Fasteners Europe is known globally as one of the world’s leading suppliers of strain hardened BS EN ISO 3506-1 A4-80 fasteners and bolting supplied to the rigorous manufacturing and testing demands of the leading Oil and Gas OEM companies.
A4-80 grade stainless steel is supplied in the solution annealed condition (A4/AISI 316) and subsequently strain hardened by using the method of drawing the bar through fixed diameter die heads to import the mechanical characteristics by cold working. The finished form is then machined from strain hardened bar.
Used extensively throughout the oil and gas sector, on control components both surface and subsea, the material offers good corrosion protection with mechanical characteristics found in carbon/alloy steel fasteners.
Lonestar offer a full range of components fully tested to the most demanding OEM specifications.
BS EN ISO 3506-1 A4-80 (Bolting and Nuts): Forms
| LoneStar Manufacture | ||
| Stud Bolts, Double Ended and Waisted Studs | ✓ | |
| Studding | ✓ | |
| Hexagon Headed Bolting | ✓ | |
| Socket Headed Bolting | ✓ | |
| Associated OEM Parts | ✓ | |
| Imperial Nuts – Heavy and Normal Series – Including ANSI B18.2.2 | ✓ | |
| Metric Nuts – Regular and High Types – Including DIN 934 H=D, ISO | ✓ | |
| Nuts with locking features | ✓ |
BS EN ISO 3506-1 A4-80 (Bolting and Nuts): Sizes and Threads
| LoneStar Manufacture | ||
| Metric Coarse | ✓ | |
| Metric Fine | ✓ | |
| Imperial UNC | – | |
| Imperial 8UN | – | |
| Imperial UNF | – | |
| ACME | ✓ | |
| Metric sizes available | Up to M39 | |
| Imperial sizes available | – |
BS EN ISO 3506-1 A4-80 (Bolting and Nuts): Chemical Composition
| Carbon | 0.08 | % Max |
| Manganese | 2.00 | % Max |
| Phosphorus | 0.045 | % Max |
| Sulphur | 0.03 | % Max |
| Silicon | 1.00 | % Max |
| Chromium | 16.0-18.5 | % |
| Nickel | 10.0-15.0 | % |
| Molybdenum | 2.0-3.0 | % |
| Copper | 4.00 | % Max |
| Niobium | – | … |
| Titanium | – | … |
| Vanadium | – | … |
| Aluminium | – | … |
| Boron | – | … |
BS EN ISO 3506-1 A4-80 (Bolting and Nuts): Mechanical Properties
| All Sizes | |
| Tensile Strength Min, MPa | 800 |
| Yield Strength min, 0.2% offset MPa | 600 |
| Elongation min, mm | 0.3d |
Not Sure What You Are Looking For?