The Washer,key, cataloged under National Stock Number 5310-00-903-5887, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Timken Corporation. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-903-5887 |
| Primary Part Number | TW111 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Timken Corporation |
| Status | ACTIVE |
| Internal Prebent Key Width | 0.290 INCHES NOMINAL IN |
| Overall Distance Including Keys | 3.0937 INCHES NOMINAL IN |
| Style Designator | KEY |
| Outside Diameter | 2.6562 INCHES NOMINAL IN |
| Material Thickness | 0.072 INCHES NOMINAL IN |
| External Key Quantity | 17 |
| Internal Prebent Key Length | 0.156 INCHES NOMINAL IN |
| External Prebent Key Width | 0.234 INCHES MAXIMUM IN |
| Material | STEEL OVERALL |
| Hole Diameter | 2.207 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 |
NSN 5310-00-903-5887 is a Washer,key, manufactured by The Timken Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-903-5887 has 3 manufacturer part numbers on file: 145978 (Hyster (europe) Ltd), TW111 (The Timken Corporation), WH-11 (Whittet-Higgins Company).
1 possible match (shared part number, not a government interchangeability claim): 5330-01-570-7204. Verify interchangeability with system specifications before substitution.
Key specifications for TW111: Internal Prebent Key Width: 0.290 INCHES NOMINAL IN; Overall Distance Including Keys: 3.0937 INCHES NOMINAL IN; Style Designator: KEY; Outside Diameter: 2.6562 INCHES NOMINAL IN. 10 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.