Aerospace & Defense Specifications · MIL-STD
MIL-SPEC MS24586 Aerospace & Defense Extension Springs
Precision military-specification helical extension springs manufactured in strict compliance with United States Military Standard MS24586. Engineered for extreme mission-critical reliability, complete lot traceability, and flight-qualified service in aerospace and defense systems.
Military-Grade Quality & Manufacturing Standards
Every MS24586 extension spring manufactured by TOSTA adheres to stringent military defense standards, including automated spring rate inspection, metallurgical grain structure verification, and strict chemical lot tracking.
MS24586 Qualified
Fully compliant with US Military Standard MS24586 dimensional, load, and hook geometry specifications.
100% Lot Traceability
Complete heat number tracking with chemical and physical test reports conforming to EN 10204 Type 3.1 / 3.2.
DFARS Specialty Metals
Melted and manufactured from DFARS 252.225-7014 qualifying specialty aerospace spring steels and superalloys.
Anti-Hydrogen Embrittlement
Strict mandatory de-hydrogenation oven baking at 190°C–220°C within 1 hour of any surface finishing.
MS24586 Standard Engineering Parameters
| Parameter | Specification Limit (MS24586) | TOSTA Production Capability |
|---|---|---|
| Wire Diameter Range | 0.015 in to 0.187 in (0.38 mm to 4.75 mm) | 0.20 mm to 8.00 mm CNC multi-axis coiling |
| End Hook Style | Full Machine Loop (English Crossover) over center | English crossover, extended hook, or reinforced German loop |
| Material Options | ASTM A228 (Music Wire), ASTM A313 (SUS302/304), 17-7PH (AMS 5678) | Music wire, 302, 316, 17-7PH (CH900), Inconel X-750 / 718 |
| Load Tolerances | ±10% on test load at specified extended length | ±5% via 100% automated optical and load-cell sorting |
| Surface Finish | Cadmium Type II (AMS-QQ-P-416) or Passivation (AMS 2700) | Cadmium, Zinc-Nickel (AMS 2417), Passivation, Electropolishing |
| Hook Plane Alignment | In-line within ±15° (unless specified 90° crossed) | High precision within ±5° angular tolerance |
Qualified Military & Defense Applications
Flight Control Actuators
Cockpit rudder pedal return, trim tab linkages, and throttle quadrant tensioners.
Guided Munition Deployment
Fin deployment latches, seeker gimbal stabilization, and fuze arming springs.
Armored Vehicle Turrets
Hatch counterbalance springs, gun mount recoil returns, and vision block wiper mechanisms.
Naval Submarine Systems
Emergency hydraulic valve reset springs, seawater acoustic sensor umbilical tensioners.
Satellite Solar Array Release
Zero-outgassing space-qualified hold-down and release mechanism (HDRM) tension springs.
Small Arms & Crew Weaponry
Tactical firearm bolt catch springs, trigger return springs, and belt-feed pawl tensioners.
Documentation Package Included with Every Shipment
All TOSTA MIL-SPEC deliveries include a comprehensive compliance binder containing: Certificate of Conformance (CoC), raw material mill test reports (MTR), heat treatment charts, plating thickness certification, and load-deflection test inspection reports.
Request a MIL-SPEC MS24586 Engineering Quote
Contact our defense engineering specialists for MS24586 cross-referencing, custom dash-number manufacturing, and first article inspection (FAIR / AS9102) packages.