The Collar,stem Back Seat, cataloged under National Stock Number 4810-00-879-9003, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Crane Co Div Valve Div. Government technical data includes 2 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4810-00-879-9003 |
| Primary Part Number | 29970PC41 |
| Item Name | Collar,stem Back Seat |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Crane Co Div Valve Div |
| Status | ACTIVE |
| Criticality Code Justification | ZZZY |
| Reference Number Differentiating Characteristics | MATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS. |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL F — Mutilate — Cut |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 29970PC41 | Crane Co Div Valve Div (USA) |
| A36583PCALL | Crane Co Div Valve Div (USA) |
| Reference | Meaning |
|---|---|
| A36583 | 5/1 Secondary reference Crane Co Div Valve Div |
| S696 | 3/1 Design control — primary reference Crane Co Div Valve Div |
NSN 4810-00-879-9003 is a Collar,stem Back Seat, manufactured by Crane Co Div Valve Div, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-00-879-9003 has 2 manufacturer part numbers on file: 29970PC41 (Crane Co Div Valve Div), A36583PCALL (Crane Co Div Valve Div).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-390-8397. Verify interchangeability with system specifications before substitution.
Key specifications for 29970PC41: Criticality Code Justification: ZZZY; Reference Number Differentiating Characteristics: MATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS.. 2 specifications are 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.
NSN 4810-00-879-9003 has DEMIL Code F. Demilitarization may be required before disposal or transfer to non-military entities.
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.