The Seat,valve, cataloged under National Stock Number 4810-00-339-4535, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Westinghouse Electric Corp. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 15 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 33 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4810-00-339-4535 |
| Primary Part Number | 1109617 |
| Item Name | Seat,valve |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Westinghouse Electric Corp |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.156 INCHES NOMINAL IN |
| Flange Diameter | 0.438 INCHES NOMINAL IN |
| Body Outside Diameter | 0.187 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN |
| Hardness Rating | 32.0 ROCKWELL C NOMINAL BODY |
| Style Designator | PLAIN FLANGED |
| Material Document and Classification | MIL-T-18291 MIL SPEC SINGLE MATERIAL RESPONSE BODY |
| Under Flange Height | 0.438 INCHES NOMINAL IN |
| Material | STEEL BODY |
| 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 |
|---|---|
| 27J553PC116 | Westinghouse Electric Corp (USA) |
| 28J418PC34 | Westinghouse Electric Corp (USA) |
| 25J641PC163 | Westinghouse Electric Corp (USA) |
| 25J427PC163 | Westinghouse Electric Corp (USA) |
| 27J593PC116 | Westinghouse Electric Corp (USA) |
| 1109617 PRIMARY | Westinghouse Electric Corp (USA) |
| 25J489PC34 | Westinghouse Electric Corp (USA) |
| 28J373PC140 | Westinghouse Electric Corp (USA) |
| 27J527PC44 | Westinghouse Electric Corp (USA) |
| 25J553PC163 | Westinghouse Electric Corp (USA) |
| 27J529PC44 | Westinghouse Electric Corp (USA) |
| 28J398PC122 | Westinghouse Electric Corp (USA) |
| 25J485PC140 | Westinghouse Electric Corp (USA) |
| 1387343 | Westinghouse Electric Corp (USA) |
| 14F332PC5 | Westinghouse Electric Corp (USA) |
| Reference | Meaning |
|---|---|
| CM5S6100-0265PC44 | 5/2 Secondary reference U.S. Government activity |
| CM5S6100-0263PC44 | 5/2 Secondary reference U.S. Government activity |
| BB61S61-123ALT8PC163 | 5/2 Secondary reference U.S. Government activity |
| BB61S61-0123ALT1PC34 | 5/2 Secondary reference U.S. Government activity |
| 7T6930LPC140 | 5/2 Secondary reference U.S. Government activity |
| S6100-321702PC122 | 5/2 Secondary reference U.S. Government activity |
| CM5S6100-0291ALT1PC116 | 5/2 Secondary reference U.S. Government activity |
| BB61S61-034ALT1PC163 | 5/2 Secondary reference U.S. Government activity |
| 27J529PC44 | 5/2 Secondary reference U.S. Government activity |
| 27J553PC116 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| 28J398PC122 | 5/2 Secondary reference U.S. Government activity |
| 25J553PC163 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| BB61S61-0119PC140 | 5/2 Secondary reference U.S. Government activity |
| 7T5248LCP116 | 5/2 Secondary reference U.S. Government activity |
| 28J373PC140 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| 25J485PC140 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| 25J485PC140 | 5/2 Secondary reference U.S. Government activity |
| 27J527PC44 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| 25J427PC163 | 5/9 Secondary reference Westinghouse Electric Corp Control Business Unit |
| 25J489PC34 | 5/2 Secondary reference U.S. Government activity |
NSN 4810-00-339-4535 is a Seat,valve, manufactured by Westinghouse Electric Corp, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-00-339-4535 has 15 manufacturer part numbers on file: 27J553PC116 (Westinghouse Electric Corp), 28J418PC34 (Westinghouse Electric Corp), 25J641PC163 (Westinghouse Electric Corp), 25J427PC163 (Westinghouse Electric Corp), 27J593PC116 (Westinghouse Electric Corp) and 10 more.
Key specifications for 1109617: Flange Seat to Disk End Height: 0.156 INCHES NOMINAL IN; Flange Diameter: 0.438 INCHES NOMINAL IN; Body Outside Diameter: 0.187 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN; Hardness Rating: 32.0 ROCKWELL C NOMINAL BODY. 8 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.