The Cover,diaphragm, cataloged under National Stock Number 4810-01-441-0438, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Century Instrument Co. The record lists 2 manufacturer part numbers 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 | 4810-01-441-0438 |
| Primary Part Number | 12-0H |
| Item Name | Cover,diaphragm |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Century Instrument Co |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 12-0H PRIMARY | Century Instrument Co (USA) |
| 2.5-3305-651-C-SH100S NO-12 | Century Instrument Co (USA) |
NSN 4810-01-441-0438 is a Cover,diaphragm, manufactured by Century Instrument Co, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-01-441-0438 has 2 manufacturer part numbers on file: 12-0H (Century Instrument Co), 2.5-3305-651-C-SH100S NO-12 (Century Instrument Co).
2 possible matches (shared part number, not a government interchangeability claim): 3805-01-478-1403, 3805-01-513-5048. Verify interchangeability with system specifications before substitution.
Key specifications for 12-0H: End Item Identification: 4930-01-230-0781; STRATEGIC SEALIFT CONVERSION SHIPS CLASS. 0 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.
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.