NAS6604‑4 – Textron Aviation OEM Hex Head Cadmium-Plated Aerospace Bolt
Available now on Airparts.aero Marketplace.
✈ Overview
The NAS6604‑4 bolt is a military-standard, cadmium-plated alloy steel fastener, widely used across aerospace systems including landing gear assemblies, control surfaces, brackets, and high-load structural installations. This non-drilled, close-tolerance bolt features a hex head, long thread, and precision grip length, making it an ideal OEM replacement in Textron and other certified aircraft platforms.
🔧 Technical Specifications
- Part Number: NAS6604‑4
- Material: Heat-treated alloy steel (e.g., E4340/8740)
- Finish: Cadmium or chromate plating per MIL spec
- Thread Size: 1/4‑28 UNF (UNJF‑3A class)
- Grip Length (Under Head): 0.250″ ±0.010″
- Overall Length: 0.675″ ±0.015″
- Thread Length: ~0.425″ (long-thread configuration)
- Head Diameter: 0.430″–0.439″
- Head Height: 0.125″–0.140″
- Shank Condition: Undrilled (non-locking)
- Tensile Strength: ≥160,000 psi; hardness ~36‑40 HRC
- Weight: ~0.001 lb per bolt
- Certification: MIL‑spec NAS6604; FAA/EASA traceable for certified aircraft
✈ Aircraft Applications & Compatibility
Primarily used in:
- Landing gear structural components
- High-load struts and torque plates
- Control linkage and flight surface hardware
- Compatible with Cessna, Piper, Beechcraft, and Textron Aviation OEM gear
- Suitable wherever NAS6604 series bolts are referenced in maintenance documentation
Key Benefits
- Exact OEM Fit & Finish: Precision dimensions eliminate field modifications
- High-Load Strength: Designed to withstand cyclic loading in flight-critical zones
- Corrosion-Protected: Long-service cadmium plating ensures environmental durability
- FAA-Compliant Traceability: Fully documented hardware eligible for airworthy installations
- Versatile Format: Non-drilled bolt suitable for tension-only applications with standard lock nuts
Order Your NAS6604‑4 Bolt Today
Ensure your structural and landing gear assemblies remain airworthy with NAS6604‑4 bolts—precision-engineered, certified, and ready for immediate deployment. Available now from Airparts.aero with fast shipping and expert aviation support.
The NAS6604‑4 bolt is essential in maintaining structural integrity under high-load and cyclic fatigue conditions typical of landing gear or control surface systems. Its tight machining tolerances and cadmium finish ensure reliable clamping and corrosion protection over time. With industry-standard dimensions and FAA traceability, this bolt supports effortless integration into your maintenance program—without modification. Airparts.aero offers fleet-ready inventory and technical guidance to help you retain operational excellence.
