The Cup,locking,valve, cataloged under National Stock Number 4810-01-138-2957, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 4810-01-138-2957 |
| Item Name | Cup,locking,valve |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Status | ACTIVE |
| General Characteristics Item Description | TITANIUM PIPE 1.250 IN. IPS; 1.594 IN. OD; 1.000 IN. H IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 810-2178000-2 ITEM 19 | 3/2 Design control — primary reference U.S. Government activity |
| 810-2178000 | D/9 Drawing number reference only U.S. Government activity |
| 810-2178000-1 ITEM 102 | 5/2 Secondary reference U.S. Government activity |
NSN 4810-01-138-2957 is a Cup,locking,valve, classified under FSC 4810, Valves, Powered. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 5305-01-155-7920, 4730-01-164-9714, 4820-01-181-3733. Verify interchangeability with system specifications before substitution.
Key specifications for 4810-01-138-2957: General Characteristics Item Description: TITANIUM PIPE 1.250 IN. IPS; 1.594 IN. OD; 1.000 IN. H 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.