The Cup,retaining Spring, cataloged under National Stock Number 1630-00-182-3339, is classified within Federal Supply Class 1630 (Aircraft Wheel and Brake Systems) of the Aircraft Components and Accessories group. The manufacturer of record is Grimes Aerospace Company. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government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 | 1630-00-182-3339 |
| Primary Part Number | 50889 |
| Item Name | Cup,retaining Spring |
| FSC / FSG | 1630 / 16 — Aircraft Wheel and Brake Systems |
| Manufacturer | Grimes Aerospace Company |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL,CADMIUM PLATED FINISH,0.167 IN. LG,0.834 IN. OD IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 50889 | Aero International, Llc Dba Ams Engineered Solutions (USA) |
| 50889 PRIMARY | Grimes Aerospace Company (USA) |
| Reference | Meaning |
|---|---|
| 50889 | 5/9 Secondary reference Honeywell International Inc. Dba Honeywell Div Aerospace-South Bend (westmoor St) |
NSN 1630-00-182-3339 is a Cup,retaining Spring, manufactured by Grimes Aerospace Company, classified under FSC 1630, Aircraft Wheel and Brake Systems. Status: active.
NSN 1630-00-182-3339 has 2 manufacturer part numbers on file: 50889 (Aero International, Llc Dba Ams Engineered Solutions), 50889 (Grimes Aerospace Company).
3 possible matches (shared part number, not a government interchangeability claim): 5905-00-185-6920, 4720-01-038-2670, 5950-01-347-3271. Verify interchangeability with system specifications before substitution.
Key specifications for 50889: General Characteristics Item Description: STEEL,CADMIUM PLATED FINISH,0.167 IN. LG,0.834 IN. OD IN. 1 specification is documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.