Bolt & Nut Anchor/Chain Shackles provide the most secure pin arrangement and will resist axial loading and torsional loading, but should only be used in applications where shackle is infrequently or never removed.
- These shackles meet requirements of Federal Specification RR-C-271D Amendment 1
- All shackle pins are forged from alloy steel, heat treated and tempered to give greater strength
- All shackles are marked with size (inches and millimeters) and working load limit in tons
- Ultimate strength equals 5 times working load limit
- All bolt, nut & cotter shackles have thread protected ends
- Galvanized per ASTM A153
- Standard industry tolerances apply
- Design factor 5:1