The Washer,flat, cataloged under National Stock Number 5310-01-576-5727, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-576-5727 |
| Primary Part Number | 6443030-01M1 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 6443030-01M1 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| 6443030-01M1 PRIMARY | Bae Systems Land & Armaments L.p. (USA) |
| 6443030-01M1 | Amz Alabama Inc. (USA) |
| Reference | Meaning |
|---|---|
| 6443030-01M1 | 3/9 Design control — primary reference Bae Systems Survivability Systems Llc |
NSN 5310-01-576-5727 is a Washer,flat, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-576-5727 has 3 manufacturer part numbers on file: 6443030-01M1 (Caterpillar Inc Div Caterpillar Defense), 6443030-01M1 (Bae Systems Land & Armaments L.p.), 6443030-01M1 (Amz Alabama Inc.).
Key specifications for 6443030-01M1: Special Features: WASHER,BALISTIC; Part Name Assigned by Controlling Agency: WASHER; End Item Identification: 9515-01-563-0360;KIT,ARMOR,MEDIUM CRAWLER TRACTOR. 0 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.
NSN 5310-01-576-5727 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
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.