The Washer,keyway, cataloged under National Stock Number 5310-01-264-1484, 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 6 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-264-1484 |
| Primary Part Number | T45884 |
| Item Name | Washer,keyway |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Timken Corporation |
| Status | ACTIVE |
| Internal Keyway Width | 0.688 INCHES NOMINAL IN |
| Style Designator | KEYWAY |
| Outside Diameter | 4.057 INCHES MINIMUM AND 4.067 INCHES MAXIMUM IN |
| Material Thickness | 0.020 INCHES NOMINAL IN |
| Material | ALUMINUM OR COPPER ALLOY OR STEEL OVERALL |
| Hole Diameter | 3.000 INCHES MINIMUM AND 3.010 INCHES MAXIMUM 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 |
|---|---|
| T45884 PRIMARY | The Timken Corporation (USA) |
| Reference | Meaning |
|---|---|
| P44135-1 | C/1 Advisory reference — outside the item-of-supply concept Pettibone Llc |
NSN 5310-01-264-1484 is a Washer,keyway, manufactured by The Timken Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-264-1484 has 1 manufacturer part number on file: T45884 (The Timken Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-666-9216. Verify interchangeability with system specifications before substitution.
Key specifications for T45884: Internal Keyway Width: 0.688 INCHES NOMINAL IN; Style Designator: KEYWAY; Outside Diameter: 4.057 INCHES MINIMUM AND 4.067 INCHES MAXIMUM IN; Material Thickness: 0.020 INCHES NOMINAL IN. 6 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.