The Expansion Unit, cataloged under National Stock Number 4940-01-339-4809, is classified within Federal Supply Class 4940 (Miscellaneous Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Akron Brass Company. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4940-01-339-4809 |
| Primary Part Number | 75-2.5 IN |
| Item Name | Expansion Unit |
| FSC / FSG | 4940 / 49 — Miscellaneous Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Akron Brass Company |
| Status | ACTIVE |
| General Characteristics Item Description | 2.5 IN.; HARDENED STEEL; HARD CHROMED IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 4940-01-339-4809 is a Expansion Unit, manufactured by Akron Brass Company, classified under FSC 4940, Miscellaneous Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4940-01-339-4809 has 2 manufacturer part numbers on file: 75-056 (Akron Brass Company), 75-2.5 IN (Akron Brass Company).
Key specifications for 75-2.5 IN: General Characteristics Item Description: 2.5 IN.; HARDENED STEEL; HARD CHROMED IN. 1 specification is documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.