AB DEFENCE
M109 Self-Propelled Howitzer — Bolt Flymvheel Housing Assy – NSN 3930-00-057-8492 – Part No: 12120-8
- SKU
- AB-2964
- NSN
- 3930-00-057-8492
- Part number
- 12120-8
AB DEFENCE
Product enquiry
M109 Self-Propelled Howitzer — Bolt Flymvheel Housing Assy – NSN 3930-00-057-8492 – Part No: 12120-8
Product information
Bolt Flymvheel Housing Assy (NSN 3930-00-057-8492 (3930000578492) / Part No 12120-8) for M109 Self-Propelled Howitzer. Genuine NATO-standard military vehicle spare part supplied by AB Defence with full traceability and export compliance.
Technical Identification & NATO Cross-Reference Matrix
Bolt Flymvheel Housing Assy (NSN 3930-00-057-8492 (3930000578492) / Part No 12120-8) is a defense-grade replacement component engineered for M109 Self-Propelled Howitzer fleets and compatible military land platforms. Classified under Hydraulics & Mechanical Components (Hydraulics & Mechanical Components), this part meets strict dimensional, metallurgical, and environmental tolerances required for tactical field maintenance and depot-level overhaul programs.
| Technical Parameter | Specification & Reference Value |
|---|---|
| Component Nomenclature | Bolt Flymvheel Housing Assy |
| Primary Vehicle Platform | M109 Self-Propelled Howitzer |
| Subsystem / Functional Group | Hydraulics & Mechanical Components |
| NATO Stock Number (Dashed) | 3930-00-057-8492 |
| NSN (13-Digit Unformatted) | 3930000578492 |
| NIIN (National Item ID Number) | 00-057-8492 / 000578492 |
| Federal Supply Class (FSC / FSG) | FSC 3930 (FSG 39) — Hydraulics & Mechanical Components |
| NCB Codification Country | 00 — United States (DLA / US DoD) |
| Manufacturer / OEM Part Number | 12120-8 |
| Cross-Reference Search Codes | 3930-00-057-8492, 3930000578492, NIIN 00-057-8492, NIIN 000578492, 12120-8, 121208 |
| Manufacturer / Platform Ecosystem | BAE Systems / FMC |
| Quality & Traceability Standard | NATO STANAG / MIL-STD Compliant — Certificate of Conformity (CoC) & Batch Traceability |
Subsystem Engineering Role & Maintenance Protocol
- Functional Application: Engineered to sustain mission-critical reliability within Hydraulics & Mechanical Components assemblies under extreme thermal, mechanical, and cross-country vibration loads.
- Platform Integration: Specifically cross-referenced for M109 Self-Propelled Howitzer maintenance schedules, ensuring direct fitment, interchangeability, and zero modification during unit replacement.
- Preventive Maintenance & Inspection: During scheduled periodic maintenance (PMCS) or subsystem overhaul, inspect mating interfaces, torque specifications, and fluid/electrical seals alongside adjacent Hydraulics & Mechanical Components assemblies to prevent cascading downtime.
Defense Procurement, Documentation & Global Export Supply
AB Defence supplies verified OEM and NATO-codified spare parts to Ministries of Defence, armed forces maintenance commands, and prime defense contractors worldwide. Every shipment of NSN 3930-00-057-8492 (3930000578492) / Part No 12120-8 is supported by controlled documentation, serial/lot traceability, military-grade protective packaging, and full export compliance. Explore our complete M109 Self-Propelled Howitzer Spare Parts & Sustainment Coverage or submit a Request for Quotation (RFQ) using the form above.
