The Washer,flat, cataloged under National Stock Number 5310-01-254-8287, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road). Government technical data includes 8 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-254-8287 |
| Primary Part Number | 1288-65 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) |
| Status | ACTIVE |
| Overall Diameter | 0.188 INCHES NOMINAL IN |
| Material Document and Classification | MIL-S-5059,HARD MIL SPEC ALL MATERIAL RESPONSES OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 301 OR STEEL COMP 302 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.125 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN |
| Thickness | 0.014 INCHES MINIMUM AND 0.016 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 |
|---|---|
| 1288-65 PRIMARY | Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road) (USA) |
| Reference | Meaning |
|---|---|
| 1288-65 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 1288-65 | 5/9 Secondary reference Grimes Aerospace Company |
NSN 5310-01-254-8287 is a Washer,flat, manufactured by Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road), classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-254-8287 has 1 manufacturer part number on file: 1288-65 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Tempe (west Warner Road)).
Key specifications for 1288-65: Overall Diameter: 0.188 INCHES NOMINAL IN; Material Document and Classification: MIL-S-5059,HARD MIL SPEC ALL MATERIAL RESPONSES OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND. 8 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.