Manufactured to ASME B18.6.3 & SAE J933 specifications
Case Hardened to Rockwell C45 min
(Core Hardness: Rockwell C28-38)
Fully Threaded / Steel Black Phosphate & Oil
• 1440FTFBT27 has a special T27 recess
• 1496FTFB & 3196FTFB may be partially threaded