12-Point

High-strength aerospace bolts engineered for superior torque transmission.

MAC 12-point fasteners are designed for aerospace assemblies requiring secure tool engagement, elevated torque capability, and high structural strength.

The multi-spline head design enhances wrench engagement in confined spaces while supporting reliable torque transfer for demanding structural applications including engine and landing gear assemblies.

Key Features

  • Built to NAS and MS specifications
  • 12-point head design for torque efficiency
  • High tensile strength materials
  • Suitable for high-load applications
  • Dimensional stability under stress
  • Compatible with automated installation

Available Configurations

MAC 12-point fasteners are produced to aerospace-standard dimensional ranges and material specifications.

  • NAS and MS part coveragev
  • 8740 alloy steel for structural strength
  • A286 material options where applicable
  • Thread and grip variations per specification

MS

MS21250
MS9088

NAS

NAS624-644
NAS632