The Pipe Union,parts Wa, cataloged under National Stock Number 4940-01-477-9922, 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 Better Engineering Manufacturing Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4940-01-477-9922 |
| Primary Part Number | 1857 |
| Item Name | Pipe Union,parts Wa |
| FSC / FSG | 4940 / 49 — Miscellaneous Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Better Engineering Manufacturing Inc |
| Status | ACTIVE |
| Criticality Code Justification | AGAV |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 1857 PRIMARY | Better Engineering Manufacturing Inc (USA) |
NSN 4940-01-477-9922 is a Pipe Union,parts Wa, manufactured by Better Engineering Manufacturing Inc, classified under FSC 4940, Miscellaneous Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4940-01-477-9922 has 1 manufacturer part number on file: 1857 (Better Engineering Manufacturing Inc).
2 possible matches (shared part number, not a government interchangeability claim): 5310-01-513-7664, 4730-01-659-4871. Verify interchangeability with system specifications before substitution.
Key specifications for 1857: Criticality Code Justification: AGAV; Special Features: NHA DEGREASER; FACILITY TYPE EQUIPMENT; End Item Identification: SPECIAL AIRCRAFT & ENGINE TOOL & SUPPORT EQUIPMENT. 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.