The Washer,flat, cataloged under National Stock Number 5310-01-688-8963, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-688-8963 |
| Primary Part Number | AL4000323 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Surface Treatment | PASSIVATE AND ZINC AND ALUMINUM ALLOY OVERALL |
| 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 |
|---|---|
| AL4000323 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 10403-03024 | Fastenal Company Div Oxal (USA) |
NSN 5310-01-688-8963 is a Washer,flat, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-688-8963 has 2 manufacturer part numbers on file: AL4000323 (U S Army Tank Automotive Command Amsta-Im-Mm), 10403-03024 (Fastenal Company Div Oxal).
Key specifications for AL4000323: Surface Treatment: PASSIVATE AND ZINC AND ALUMINUM ALLOY OVERALL; Part Name Assigned by Controlling Agency: 5/8 F/W SAE; End Item Identification: 2355-01-627-5147. 1 specification is 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.