ASTM A453 Grade 660 Class D Fasteners
A453 Grade 660 Class D Fasteners are used for high temperature applications, where the service temperature exceeds carbon steel or alloy steel working temperature. usually Grade 660 fasteners are preferred over ASTM A540 B21 & ASTM A193 Grade B16. Set of stud and heavy hex nuts are most commonly used in petrochemical refineries.
Specifications
- ASTM A453
- ASTM A638
- EN 10269
- EN 10083-3
- ISO 3506-5
- DIN 267
Surface Treatments
- Xylan 1070 / 1014 / 1400 / 1424
- Xylar 2 / 101
- SermaGard 1105 / 1280
- Dacromet 320 / 500
- TakeCoat 1000 Ceramic
- Magnigard
- MolyKote
Certifications
- ISO 9001 - 2015 Certified
- PED 2014/68/EC
- NACE MR0175/ISO 15156-2
- NORSOK M-650
- DFAR
- MERKBLATT AD 2000 W2/W7/W10
