NSN 4910-01-549-8291: Universal Pneumatic Multi-Size Runflat Inserter & Extractor Workshop Specifications

The NATO Stock Number (NSN) 4910-01-549-8291 establishes the standardized military procurement specification for the Universal Pneumatic Multi-Size Runflat Inserter & Extractor under NATO Supply Classification FSC 4910 (Motor Vehicle Maintenance and Repair Shop Specialized Equipment). Engineered to support forward maintenance units, tactical depots, and multi-national coalition operations, this system delivers critical workshop capability for maintaining zero-pressure combat mobility across NATO allied forces.

1. NATO Codification & Procurement Anatomy: NSN 4910-01-549-8291

In modern coalition logistics managed through the NATO Codification System (NCS), every piece of expeditionary maintenance tooling must meet strict standards for interoperability, cataloging, and parts codification. The thirteen-digit NSN 4910-01-549-8291 is structured as follows:

• Federal Supply Class (FSC 4910): Identifies specialized motor vehicle maintenance shop equipment designed to assemble, dismount, and inspect high-payload tactical wheel systems.
• National Codification Bureau (NCB 01): Designates codification compliance under United States defense logistics authorities.
• National Item Identification Number (NIIN): Guarantees unique part traceability across all NATO Support and Procurement Agency (NSPA) logistics channels.

By securing standardized NSN registration, military maintenance commands ensure that tactical workshops operating in remote Forward Operating Bases (FOBs) or theater support depots can rapidly requisition exact replacement tooling, seals, and hydraulic spares without engineering incompatibilities.

2. Operational Workshop Capability & High-Pressure Rim Handling

Modern military wheeled combat vehicles—such as 8x8 infantry fighting vehicles and heavily armored MRAPs—utilize high-tensile multi-piece rims fitted with internal runflat inserts. Traditional commercial tire machines cannot handle the massive bead retention forces, rim diameters, and dense composite inserts characteristic of combat wheel assemblies.

The Universal Pneumatic Multi-Size Runflat Inserter & Extractor codified under NSN 4910-01-549-8291 delivers the necessary mechanical leverage, hydraulic clamping power, and structural rigidity to perform complete runflat insertions and dismounts in under 15 minutes per wheel:

• Hydraulic Force Application: Delivers controlled axial and radial pressing forces up to 25 to 50 metric tons, safely overcoming seized bead seats and compressed composite runners without damaging forged alloy wheel flanges.
• Multi-Caliber Tooling Compatibility: Designed for versatile rim sizes ranging from 16-inch tactical wheels up to 27-inch extreme heavy logistics rims, including 14.00 R20, 395/85 R20, and 16.00 R20 configurations.
• Explosion-Proof & Blast-Cage Safety: Incorporates automated interlocks and safety barriers that protect military technicians from catastrophic split-rim ring release during high-pressure seating operations.

3. Standardization Compliance: STANAG 4684 Maintenance Protocols

Under NATO STANAG 4684 and FINABEL A.20.A standards, runflat inserts and beadlock rings must maintain precise physical geometries and balancing tolerances following every field re-assembly. Tooling governed by NSN 4910-01-549-8291 ensures repeatability and torque precision throughout the overhaul process:

• Integrated Torque Verification: Calibrated torque application stations prevent over-tightening or bolt fatigue across high-tensile Grade 10.9 and 12.9 assembly hardware.
• Thermal Gel Lubricant Application: Precise cavity dispensing guides ensure uniform distribution of friction-dissipating synthetic runflat gel, preventing dry spots that cause thermal breakdown during flat-tire runs.
• Deployable Containerized Configuration: Engineered for severe ambient environments from -40°C arctic conditions to +65°C desert operations, capable of container mounting in standardized ISO 20ft military shelters.

4. Related REPA Defense Systems & Product Integration

REPA Runflat designs, manufactures, and exports fully codified NATO runflat systems, automated assembly machinery, and tactical beadlocks. Explore our certified defense systems:

• Full Product Catalog: Explore certified combat solutions on the Repa Runflat Products Catalog.
• Matching Combat Systems: Examine our heavy-duty inserts such as the Repa Universal Runflat Inserter.
• Dedicated Workshop Machinery: Review our complete lineup of containerized and workshop equipment at Repa Runflat Machinery & Assembly Systems.
• NATO Quality Compliance: Review international accreditations and ISO certifications at Repa Quality & ISO Certificates.
• Ballistic & Proving Ground Verification: Access certified test data at Repa Proving Ground Tests.
• Procurement & RFQ Inquiries: Contact our defense engineering team directly via Repa Defense RFQ & Engineering Contact.

Frequently Asked Questions (F.A.Q.)

What does NSN 4910-01-549-8291 specify in military logistics?

NSN 4910-01-549-8291 is the official NATO Stock Number for the Universal Pneumatic Multi-Size Runflat Inserter & Extractor. It standardizes technical specifications, hydraulic capacities, and safety requirements across NATO allied defense forces under FSC 4910.

Can this system service different tire and rim sizes in the field?

Yes. Tooling codified under NSN 4910-01-549-8291 features universal adapter flanges and variable-stroke hydraulic cylinders capable of handling tactical rim sizes from 16.5 inches up to 24 inches, including military 14.00 R20 and 395/85 R20 assemblies.

How does standardized NSN tooling reduce fleet life-cycle costs?

By standardizing runflat insertion and demounting, military depots eliminate premature tire and rim damage caused by improper manual prying, reduce workshop turnaround times to under 15 minutes, and ensure interoperable maintenance across multinational NATO operations.