MS24693C32 - Aerospace Screw Thread 6-32 Length 1"

MS24693C32 – Aerospace Screw Thread 6-32 Length 1"

Available now on the Airparts.aero Marketplace.

Overview

The MS24693C32 is a military-standard, structural machine screw, engineered for flight-critical applications where a flush aerodynamic surface is required. This fastener is defined by its 100-degree flat countersunk head, which allows it to sit perfectly level with the surrounding material when installed in a matching countersunk hole. The "C" designation specifies that this screw is fabricated from high-strength, corrosion-resistant steel (CRES), making it ideal for external airframe applications. As a certified structural fastener, it is designed to handle both shear and tension loads, providing a secure and aerodynamically clean fastening solution.

Key Features

• 100° Flat Countersunk Head: The precision-angled head is designed to fit into a 100-degree countersunk (dimpled) hole, creating a completely flush surface. This is essential for minimizing parasitic drag on aircraft skins, fairings, and panels.
• Structural Corrosion-Resistant Steel (CRES): Fabricated from a high-strength, 300-series corrosion-resistant steel alloy. This material provides the necessary tensile strength for structural applications while offering inherent resistance to rust and environmental corrosion without requiring plating.
• Phillips Cross-Recess Drive: Features a standard Phillips drive, which provides excellent tool engagement for applying the consistent torque values required for structural installations.
• Precision Rolled Threads: The 6-32 UNC threads are rolled, not cut. This manufacturing process creates a stronger, more fatigue-resistant thread compared to standard commercial screws, a critical feature for hardware subjected to aircraft vibration.
• MS Certified Standard: As a certified Military Standard part, it guarantees full material traceability, dimensional accuracy, and quality control, ensuring it meets the stringent requirements for use in certified aircraft structures.

Technical Specifications

• Standard: MS24693 (Screw, Machine, Flat Countersunk Head, 100°, Structural, Cross-Recessed)
• Full Part Number: MS24693-C32
• Material (C): Corrosion-Resistant Steel (CRES), 300 Series
• Finish: Passivated
• Head Style: 100° Flat Countersunk Head
• Drive Type: Phillips / Cross-Recess
• Thread Specification: 6-32 UNC-2A
  • Nominal Diameter: #6 (0.138 inches)
  • Threads Per Inch: 32 (Coarse Thread)
• Length (-32): 1 inch, measured from the top of the head to the end of the threads.

Aircraft Compatibility

The MS24693C32 is a universal structural fastener used across all categories of aviation, from general aviation to business jets and military aircraft. Its use is specified by manufacturers wherever a strong, corrosion-resistant, flush-mount screw is required.

• Common Applications:
  • Attaching Skins & Panels: Securing fuselage, wing, and empennage skins to the underlying structure.
  • Mounting Inspection Covers & Fairings: Providing a secure and aerodynamically clean attachment for access panels and aerodynamic fairings.
  • Securing Window Retainers & Trim: Used for fastening window retaining rings and other exterior trim pieces.

Applications

The MS24693C32 is the specified fastener for creating strong, flush-surface joints:

• Aerodynamic Surfaces: Its primary application is on any external surface where minimizing drag is a key performance consideration.
• Structural Joints: Used in load-bearing joints in conjunction with nutplates (anchor nuts) or other self-locking nuts to create a high-strength, serviceable connection.

Why Choose MS24693C32?

The integrity and performance of an aircraft's skin and structural panels are critical. Using a genuine MS24693C32 structural screw guarantees you are installing a fastener with certified material strength and superior corrosion resistance. Unlike non-structural screws, it is designed and tested to withstand flight loads. Unlike plated carbon steel screws, its corrosion resistance is inherent to the material and won't be compromised by a scratch. For any structural application requiring a flush finish, the MS24693C32 is the professional, airworthy choice.

Ensure your structural assemblies are strong, durable, and aerodynamically clean with certified aerospace hardware. Visit Airparts.aero to order your MS24693C32 structural screws today.

The 100-degree head angle of the MS24693C32 is the standard for aerospace countersunk fasteners. This angle provides an optimal balance between head strength and bearing efficiency in the thin aluminum sheets common in aircraft construction. The installation requires a corresponding 100-degree countersunk or dimpled hole in the material. When the screw is properly torqued, the head seats evenly in the prepared hole, creating a large, conical contact area that distributes the clamping force without creating the high stress concentrations that could lead to cracking in the skin material. This ensures a strong, durable, and aerodynamically flush joint.

Note: This is a flight-critical structural component. Always verify the correct screw part number (including material, thread size, and length) from the applicable aircraft maintenance or structural repair manual. Installation in a properly prepared 100° countersunk hole is required for proper performance. Use the correct size Phillips driver bit to prevent stripping the recess.