The Washer,flat, cataloged under National Stock Number 5310-01-306-7880, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Head Italia Spa. Government technical data includes 6 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-306-7880 |
| Primary Part Number | MS14183L-C8 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Head Italia Spa |
| Status | ACTIVE |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | AMS 5596 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5597 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.922 INCHES MINIMUM AND 0.932 INCHES MAXIMUM IN |
| Material | NICKEL ALLOY 718 OVERALL |
| Hole Diameter | 0.501 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN |
| Thickness | 0.071 INCHES MINIMUM AND 0.085 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 |
|---|---|
| MS14183L-C8 | Head Italia Spa (ITA) |
| Reference | Meaning |
|---|---|
| NASM14183 | 5/1 Secondary reference U.S. Government activity |
| MS14183L-C8 | 2/2 Government specification standardization U.S. Government activity |
| MS14183C8 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-306-7880 is a Washer,flat, manufactured by Head Italia Spa, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-306-7880 has 1 manufacturer part number on file: MS14183L-C8 (Head Italia Spa).
1 possible match (shared part number, not a government interchangeability claim): 5310-01-537-5805. Verify interchangeability with system specifications before substitution.
Key specifications for MS14183L-C8: Hardness Rating: 36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM; Material Document and Classification: AMS 5596 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5597 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.922 INCHES MINIMUM AND 0.932 INCHES MAXIMUM IN; Special Features: RECESS DIAMETER: 0.614 IN. MIN. AND 0.624 IN. MAX.;RECESS ANGLE: 90.0 DEG. NOM.;STYLE DESIGNATOR: RECESSED IN. 6 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.