The Washer,concave, cataloged under National Stock Number 5310-01-076-2317, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-076-2317 |
| Primary Part Number | 11780253 |
| Item Name | Washer,concave |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES ALL SURFACES |
| Radius | 1.000 INCHES NOMINAL IN |
| Style Designator | CONCAVE |
| Material Document and Classification | QQ-S-764 COND B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.720 INCHES NOMINAL IN |
| Material Thickness | 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM IN |
| Recess Diameter | 0.524 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL OVERALL |
| Hole Diameter | 0.301 INCHES MINIMUM AND 0.308 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 |
|---|---|
| 11780253 PRIMARY | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA) |
| Reference | Meaning |
|---|---|
| 42208-1 | 5/9 Secondary reference Rockwell Collins, Inc. Dba Rc Displays Systems |
NSN 5310-01-076-2317 is a Washer,concave, manufactured by Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-076-2317 has 1 manufacturer part number on file: 11780253 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate).
1 possible match (shared part number, not a government interchangeability claim): 3120-01-423-6960. Verify interchangeability with system specifications before substitution.
Key specifications for 11780253: Surface Finish: 63.0 MICROINCHES ALL SURFACES; Radius: 1.000 INCHES NOMINAL IN; Style Designator: CONCAVE; Material Document and Classification: QQ-S-764 COND B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. 10 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.