The Seat,valve, cataloged under National Stock Number 4820-01-421-5201, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is O. C. Keckley Company. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-421-5201 |
| Primary Part Number | 7102-1-A |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | O. C. Keckley Company |
| Status | ACTIVE |
| Material Document and Classification | AISI 416 ASSN STD SINGLE MATERIAL RESPONSE SEAT |
| Material | STEEL COMP 416 SEAT |
| 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 |
|---|---|
| 25366A IT 25 | O. C. Keckley Company (USA) |
| 7102-1-A PRIMARY | O. C. Keckley Company (USA) |
| Reference | Meaning |
|---|---|
| 7102A | C/1 Advisory reference — outside the item-of-supply concept O. C. Keckley Company |
NSN 4820-01-421-5201 is a Seat,valve, manufactured by O. C. Keckley Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-421-5201 has 2 manufacturer part numbers on file: 25366A IT 25 (O. C. Keckley Company), 7102-1-A (O. C. Keckley Company).
Key specifications for 7102-1-A: Material Document and Classification: AISI 416 ASSN STD SINGLE MATERIAL RESPONSE SEAT; End Item Identification: STRATEGIC SEALIFT CONVERSION SHIPS CLASS; Material: STEEL COMP 416 SEAT. 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.
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.