The Washer,flat, cataloged under National Stock Number 5310-00-083-2152, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Diversified Aerospace Services, Llc Dba Lloyd Aircraft Company. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 2 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 | 5310-00-083-2152 |
| Primary Part Number | 2512380-01 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Diversified Aerospace Services, Llc Dba Lloyd Aircraft Company |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES ALL SURFACES |
| Overall Diameter | 1.000 INCHES NOMINAL IN |
| Hardness Rating | 38.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | AMS 5610 ASSN STD 1ST MATERIAL RESPONSE AND AMS 5504 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 416F OR STEEL COMP 410 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.340 INCHES NOMINAL IN |
| Thickness | 0.032 INCHES NOMINAL 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 |
|---|---|
| 2512380-01 PRIMARY | Diversified Aerospace Services, Llc Dba Lloyd Aircraft Company (USA) |
| 176878 | Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division (USA) |
NSN 5310-00-083-2152 is a Washer,flat, manufactured by Diversified Aerospace Services, Llc Dba Lloyd Aircraft Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-083-2152 has 2 manufacturer part numbers on file: 2512380-01 (Diversified Aerospace Services, Llc Dba Lloyd Aircraft Company), 176878 (Curtiss-Wright Controls, Inc. Dba Curtiss Wright Div Actuation Division).
1 possible match (shared part number, not a government interchangeability claim): 2540-01-479-2021. Verify interchangeability with system specifications before substitution.
Key specifications for 2512380-01: Surface Finish: 63.0 MICROINCHES ALL SURFACES; Overall Diameter: 1.000 INCHES NOMINAL IN; Hardness Rating: 38.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM; Material Document and Classification: AMS 5610 ASSN STD 1ST MATERIAL RESPONSE AND AMS 5504 ASSN STD 2ND MATERIAL RESPONSE OVERALL. 11 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.