419-967 – Piper Aircraft Set Screw
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The Piper Aircraft 419-967 is a genuine OEM set screw, a type of fastener specifically engineered to secure an object within or against another object, typically by exerting compressive or clamping force through its point. Unlike bolts or screws that join parts through tension, a set screw achieves its function through friction or mechanical interference at its tip. This specific part is manufactured by Piper Aircraft to their exacting standards for use in various mechanical assemblies throughout their aircraft.
These fasteners are critical for preventing relative motion between components, such as securing a collar, gear, or pulley to a shaft, or locking a specific adjustment in place. Manufactured from high-strength alloy steel and treated for corrosion resistance, the 419-967 is designed to withstand the vibration and operational stresses encountered in certified aircraft. Using the correct, certified set screw is essential for maintaining the integrity and safety of the assembly it secures.
Key Features
Genuine Piper Aircraft OEM Part: Guarantees the correct material, thread specifications, point style, heat treatment, and finish as required by the original design.
Secures Components Against Motion: Designed to lock parts in place relative to each other, often on shafts or within threaded housings.
High-Strength Alloy Steel Construction: Typically manufactured from heat-treated alloy steel to provide high strength and resist stripping or deformation under torque.
Corrosion-Resistant Finish: Plated (e.g., Cadmium) or treated to protect against environmental degradation.
Specific Point Style for Application: Engineered with a specific point (e.g., cup, flat, cone) designed for the intended mating surface and locking requirement. (Actual point style must be confirmed by IPC/drawing).
Technical Specifications
Part Number: 419-967
Component Type: Set Screw
OEM Manufacturer: Piper Aircraft, Inc.
Material: Likely Alloy Steel, Heat Treated. (Material must be confirmed by OEM documentation or certification).
Finish: Likely Cadmium Plated or similar corrosion-resistant finish. (Finish must be confirmed).
Dimensions: Specific diameter, length, and thread pitch (e.g., UNF or UNC) must be confirmed via Piper documentation or part inspection.
Drive Type: Typically Hex Socket (Allen) or Slotted. (Drive type must be confirmed).
Point Style: Cup, Flat, Cone, Oval, or Knurled Cup. (Point style must be confirmed).
Governing Specification: Manufactured to Piper Aircraft proprietary design and quality standards, potentially referencing AN/MS/NAS standards for certain characteristics.
Aircraft Compatibility
The 419-967 set screw is likely used in various assemblies across a wide range of Piper aircraft models. Applicability could include series such as:
PA-28 Series: Cherokee, Warrior, Archer, Arrow, Dakota
PA-32 Series: Cherokee Six, Lance, Saratoga
PA-34 Series: Seneca
PA-44 Series: Seminole
PA-46 Series: Malibu, Mirage, Meridian, M-Class
Crucial Note: The specific aircraft model, serial number, and assembly location must be checked against the latest revision of the official Piper Aircraft Illustrated Parts Catalog (IPC) to ensure correct part number applicability.
Applications
The specific application for this set screw must be confirmed via the IPC. Common uses for set screws in aircraft include:
Securing control knobs or levers to shafts.
Locking pulleys or gears onto shafts.
Preventing rotation of collars or sleeves.
Adjusting and locking mechanical stops or linkages.
Securing components within housings.
Why Choose 419-967?
Choosing the genuine Piper 419-967 set screw is essential for ensuring the security and reliability of the assembly it is part of. The material strength, thread quality, point hardness, and drive socket integrity are all critical factors. Using a non-certified, commercial-grade set screw risks fastener failure due to vibration, improper locking force, stripped threads or drives, or material incompatibility. A failed set screw can lead to component loosening, misalignment, or complete detachment, potentially compromising the function of critical systems. The genuine Piper OEM part guarantees the certified quality and engineering required for flight safety.
Set screws like the 419-967 achieve their holding power through different mechanisms depending on the point style. A cup point (the most common) is designed to create a circular witness mark by digging slightly into the mating shaft material, providing high resistance against both rotational and axial slipping. A flat point is used when minimal surface damage is desired and relies purely on friction generated by the compressive force (clamping load) resulting from the applied torque. A cone point provides the highest holding power by wedging itself into a pre-drilled hole or indentation, creating a positive mechanical lock. An oval point offers a compromise, providing better holding than a flat point with less surface damage than a cup point, often used against angled surfaces. The selection of the point style by Piper engineers for the 419-967 is specific to its intended application, balancing holding power requirements with the need to avoid damaging the mating component. The fastener's strength class and the proper installation torque are critical to generating the necessary clamping force for reliable holding without stripping the threads or fracturing the screw.
Note: This is a flight-critical fastener. Ensure the correct part number, point style, and length are used for the specific application. The set screw must be tightened to the torque value specified in the applicable Piper Maintenance Manual. Use of appropriate thread locking compound may also be specified. Installation must be performed by a certified A&P mechanic.
Documentation
No public-facing OEM or regulatory documentation was located for this specific part number. All technical data (dimensions, material, point style, torque values) and applicability must be sourced from the official Piper Aircraft Illustrated Parts Catalog (IPC) and Maintenance Manual for the specific aircraft model and assembly.