The Retainer,valve Spring, cataloged under National Stock Number 4820-00-601-9756, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Us Army Aviation and Missile Command. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-601-9756 |
| Primary Part Number | 8528149 |
| Item Name | Retainer,valve Spring |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM,ANODIZED,9/16 O/A LENGTH,ONE END SLOTTED 13/32 IN. OD,OTHER END THREADED 1/2-20 UNF-3A,7/64 DIA THROUGH 4 HOLES A |
| 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 |
|---|---|
| 8528149 | Us Army Aviation and Missile Command (USA) |
| Reference | Meaning |
|---|---|
| 203134 | 3/2 Design control — primary reference U.S. Government activity |
| 203134 | 5/9 Secondary reference Kidde-Fenwal, Llc |
NSN 4820-00-601-9756 is a Retainer,valve Spring, manufactured by Us Army Aviation and Missile Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-601-9756 has 1 manufacturer part number on file: 8528149 (Us Army Aviation and Missile Command).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-507-1163. Verify interchangeability with system specifications before substitution.
Key specifications for 8528149: General Characteristics Item Description: ALUMINUM,ANODIZED,9/16 O/A LENGTH,ONE END SLOTTED 13/32 IN. OD,OTHER END THREADED 1/2-20 UNF-3A,7/64 DIA THROUGH 4 HOLES A; End Item Identification: NIKE HERCULES. 1 specification is 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.