The O-Ring, cataloged under National Stock Number 5331-01-474-5522, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Hunt Valve Company, Inc.. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-474-5522 |
| Primary Part Number | H134-020 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Hunt Valve Company, Inc. |
| 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 |
|---|---|
| H134-020 PRIMARY | Hunt Valve Company, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 15666057-ITEM16 | 5/2 Secondary reference U.S. Government activity |
| H134-020 | 3/9 Design control — primary reference Hunt Valve Company, Inc. |
| 15666057-ITEM16 | 5/9 Secondary reference Gulf Coast Holdings, Inc Dba Unidynamics |
NSN 5331-01-474-5522 is a O-Ring, manufactured by Hunt Valve Company, Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-474-5522 has 1 manufacturer part number on file: H134-020 (Hunt Valve Company, Inc.).
Key specifications for H134-020: Part Name Assigned by Controlling Agency: 0-RING 1/2INCH 3 WAY-SOL.OPER. BUCKING CYL. RTN. N.O. VALVE.PILOT WJCT. BOX-SINGLE PLUNGER VALVE IN; End Item Identification: 0DHG4-15666057-1. 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.