The MS51957-29 is a military-standard pan head machine screw with Phillips drive, used in aerospace applications where secure fastening, vibration resistance, and ease of maintenance are required. The pan head design provides a wider bearing surface compared to countersunk screws, making it suitable for applications where flush mounting is not necessary.

This screw is commonly used in aircraft interior panels, equipment mounting, avionics installations, and light structural assemblies. It is designed for reliable performance in low-to-medium load environments while maintaining serviceability during repeated maintenance operations.

Manufactured to MS specifications, it is typically made from corrosion-resistant stainless steel (18-8 / 300-series) with a passivated finish, ensuring durability in aviation environments exposed to vibration, moisture, and temperature variation.

Key features include:

MS51957-29 aerospace machine screw
Pan head design (non-flush mounting)
Phillips drive for standard tools
Stainless steel (18-8 / 300-series) construction
Passivated corrosion-resistant finish
Used in aircraft interiors and equipment mounting
Suitable for vibration and cyclic load environments
Provides improved load distribution
Lightweight aerospace fastener
Direct replacement per MS aircraft hardware standards