The Retainer,seat,valve, cataloged under National Stock Number 4820-01-107-4273, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Hunt Valve Company, Inc.. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-107-4273 |
| Primary Part Number | B1124PJ |
| Item Name | Retainer,seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Hunt Valve Company, Inc. |
| Status | ACTIVE |
| Outside Diameter | 2.875 INCHES NOMINAL IN |
| Nominal Thread Size | 2.875 INCHES IN |
| Inside Diameter | 1.250 INCHES NOMINAL IN |
| 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 |
|---|---|
| B1124PJ PRIMARY | Hunt Valve Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| B1149PJ | 5/9 Secondary reference Hunt Valve Company, Inc. |
| D1119 PIECE 3 | 5/9 Secondary reference P J Valves Inc |
| B1124 | 3/9 Design control — primary reference P J Valves Inc |
NSN 4820-01-107-4273 is a Retainer,seat,valve, manufactured by Hunt Valve Company, Inc., classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-107-4273 has 1 manufacturer part number on file: B1124PJ (Hunt Valve Company, Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 4510-01-332-8693, 6030-01-557-7210. Verify interchangeability with system specifications before substitution.
Key specifications for B1124PJ: Outside Diameter: 2.875 INCHES NOMINAL IN; Overall Length: 2.500 INCHES NOMINAL IN; Nominal Thread Size: 2.875 INCHES IN; Inside Diameter: 1.250 INCHES NOMINAL IN. 3 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.