The Washer,flat, cataloged under National Stock Number 5310-01-588-7328, 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. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-588-7328 |
| Primary Part Number | 6443984-01M1 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | O'gara-Hess & Eisenhardt Armoring Company Llc |
| Status | ACTIVE |
| Overall Diameter | 70.0 MILLIMETERS NOMINAL MM |
| Cross-Sectional Shape Style | RECTANGULAR |
| Color | GREEN OVERALL |
| Peripheral Shape Style | ROUND |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 26.0 MILLIMETERS NOMINAL MM |
| Thickness | 9.5 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| 6443984-01M1 | Amz Alabama Inc. (USA) |
| 6443984-01M1 PRIMARY | O'gara-Hess & Eisenhardt Armoring Company Llc (USA) |
| 6443984-01M1 PRIMARY | Bae Systems Land & Armaments L.p. (USA) |
| 6443984-01M1 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| 6443984-01M1 | 3/9 Design control — primary reference Bae Systems Survivability Systems Llc |
NSN 5310-01-588-7328 is a Washer,flat, manufactured by O'gara-Hess & Eisenhardt Armoring Company Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-588-7328 has 4 manufacturer part numbers on file: 6443984-01M1 (Amz Alabama Inc.), 6443984-01M1 (O'gara-Hess & Eisenhardt Armoring Company Llc), 6443984-01M1 (Bae Systems Land & Armaments L.p.), 6443984-01M1 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 6443984-01M1: Overall Diameter: 70.0 MILLIMETERS NOMINAL MM; Cross-Sectional Shape Style: RECTANGULAR; Color: GREEN OVERALL; Peripheral Shape Style: ROUND. 7 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.