The Washer,flat, cataloged under National Stock Number 5310-01-617-1563, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Timken Gears & Services Inc. Div Philadelphia Gear. Government technical data includes 10 specifications, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-617-1563 |
| Primary Part Number | K-4804854 PT 7 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Timken Gears & Services Inc. Div Philadelphia Gear |
| Status | ACTIVE |
| Width Across Flats | 1.00 INCHES NOMINAL IN |
| Length | 2.00 INCHES NOMINAL IN |
| Material Document and Classification | G.E. B8A3A MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | RECTANGULAR |
| Width | 1.00 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.5625 INCHES NOMINAL IN |
| Thickness | 0.044 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 |
| Part Number | Manufacturer |
|---|---|
| K-4804854 PT 7 | General Electric Company (USA) |
| K-4804854 PT 7 PRIMARY | Timken Gears & Services Inc. Div Philadelphia Gear (USA) |
| Reference | Meaning |
|---|---|
| K-4804854 | D/9 Drawing number reference only General Electric Company |
| 873E194 ITEM 52 | 5/1 Secondary reference General Electric Company |
NSN 5310-01-617-1563 is a Washer,flat, manufactured by Timken Gears & Services Inc. Div Philadelphia Gear, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-617-1563 has 2 manufacturer part numbers on file: K-4804854 PT 7 (General Electric Company), K-4804854 PT 7 (Timken Gears & Services Inc. Div Philadelphia Gear).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-618-5922. Verify interchangeability with system specifications before substitution.
Key specifications for K-4804854 PT 7: Width Across Flats: 1.00 INCHES NOMINAL IN; Length: 2.00 INCHES NOMINAL IN; Material Document and Classification: G.E. B8A3A MFR REF SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 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.