The Washer,flat, cataloged under National Stock Number 5310-01-570-7560, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is O'gara-Hess & Eisenhardt Armoring Company Llc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Washer,flat |
| FSC / FSG | 5310 — Nuts and Washers (FSG 53) |
| Manufacturers | O'gara-Hess & Eisenhardt Armoring Company Llc (CAGE 6TD24); Amz Alabama Inc. (CAGE 076M6) |
| Parameter | Value |
|---|---|
| NSN | 5310-01-570-7560 |
| Primary Part Number | 6437550-07M1 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | O'gara-Hess & Eisenhardt Armoring Company Llc |
| Status | ACTIVE |
| 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 |
|---|---|
| 6437550-07M1 PRIMARY | O'gara-Hess & Eisenhardt Armoring Company Llc (USA) |
| 6437550-07M1 | Amz Alabama Inc. (USA) |
| Reference | Meaning |
|---|---|
| 6437550-07M1 | 3/9 Design control — primary reference Bae Systems Survivability Systems Llc |
| 6437550 | D/9 Drawing number reference only Bae Systems Survivability Systems Llc |
| 6437550-07M1 | C/1 Advisory reference — outside the item-of-supply concept Bae Systems Land & Armaments L.p. |
NSN 5310-01-570-7560 is a Washer,flat, manufactured by O'gara-Hess & Eisenhardt Armoring Company Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-570-7560 has 2 manufacturer part numbers on file: 6437550-07M1 (O'gara-Hess & Eisenhardt Armoring Company Llc), 6437550-07M1 (Amz Alabama Inc.).
4 possible matches (shared part number, not a government interchangeability claim): 5310-01-570-7579, 5310-01-570-7704, 5310-01-579-2375. Verify interchangeability with system specifications before substitution.
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.