The Washer,flat, cataloged under National Stock Number 5310-00-151-7509, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Bae Systems Global Combat Systems Limited. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-151-7509 |
| Primary Part Number | 7R450 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Bae Systems Global Combat Systems Limited |
| Status | ACTIVE |
| Overall Diameter | 1.618 INCHES MINIMUM AND 1.623 INCHES MAXIMUM IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PHOSPHATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 1.070 INCHES MINIMUM AND 1.080 INCHES MAXIMUM IN |
| Thickness | 0.0675 INCHES MINIMUM AND 0.0685 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 |
|---|---|
| 7R9641009 | Bae Systems Global Combat Systems Limited (GBR) |
| 7R450 PRIMARY | Bae Systems Global Combat Systems Limited (GBR) |
| D5E9209-161N02 | Bae Systems Global Combat Systems Limited (GBR) |
NSN 5310-00-151-7509 is a Washer,flat, manufactured by Bae Systems Global Combat Systems Limited, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-151-7509 has 3 manufacturer part numbers on file: 7R9641009 (Bae Systems Global Combat Systems Limited), 7R450 (Bae Systems Global Combat Systems Limited), D5E9209-161N02 (Bae Systems Global Combat Systems Limited).
1 possible match (shared part number, not a government interchangeability claim): 6695-00-157-5835. Verify interchangeability with system specifications before substitution.
Key specifications for 7R450: Overall Diameter: 1.618 INCHES MINIMUM AND 1.623 INCHES MAXIMUM IN; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: PHOSPHATE OVERALL; 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.