The Washer,flat, cataloged under National Stock Number 5310-00-982-2600, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Leonardo Spa Aeronautics Division - Pomigliano D'arco Site. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-982-2600 |
| Primary Part Number | NAS1252-616H |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Leonardo Spa Aeronautics Division - Pomigliano D'arco Site |
| Status | ACTIVE |
| Overall Diameter | 0.620 INCHES MINIMUM AND 0.645 INCHES MAXIMUM IN |
| Heat Treatment | F-AS FABRICATED |
| Material Document and Classification | MIL-A-8625 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | ALUMINUM ALLOY 7075 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.380 INCHES MINIMUM AND 0.400 INCHES MAXIMUM IN |
| Thickness | 0.057 INCHES MINIMUM AND 0.069 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 |
|---|---|
| NAS1252-616H | Leonardo Spa Aeronautics Division - Pomigliano D'arco Site (ITA) |
| Reference | Meaning |
|---|---|
| NAS1252-616H | 3/2 Design control — primary reference U.S. Government activity |
| 121-2Z-7 | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 5310-00-982-2600 is a Washer,flat, manufactured by Leonardo Spa Aeronautics Division - Pomigliano D'arco Site, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-982-2600 has 1 manufacturer part number on file: NAS1252-616H (Leonardo Spa Aeronautics Division - Pomigliano D'arco Site).
2 possible matches (shared part number, not a government interchangeability claim): 5315-01-107-0974, 5310-01-337-1519. Verify interchangeability with system specifications before substitution.
Key specifications for NAS1252-616H: Overall Diameter: 0.620 INCHES MINIMUM AND 0.645 INCHES MAXIMUM IN; Heat Treatment: F-AS FABRICATED; Material Document and Classification: MIL-A-8625 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 9 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.