The Washer,flat, cataloged under National Stock Number 5310-01-197-1099, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Rolls-Royce Solutions Gmbh. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-01-197-1099 |
| Primary Part Number | A10.5DIN125-MS-E3A |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Rolls-Royce Solutions Gmbh |
| Status | ACTIVE |
| Surface Treatment Document and Classification | DIN 267 SHEET 9 NATIONAL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 21.0 MILLIMETERS NOMINAL MM |
| Material Document and Classification | DIN 17660 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | NICKEL OVERALL |
| Peripheral Shape Style | ROUND |
| Material | COPPER ALLOY OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 10.5 MILLIMETERS NOMINAL MM |
| Thickness | 2.0 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| A10.5DIN125-MS-E3A | Rolls-Royce Solutions Gmbh (DEU) |
| Reference | Meaning |
|---|---|
| A10.5DIN125-MS-E3A | 3/9 Design control — primary reference Zelenda Machine and Tools Corp |
| 10088106 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5310-01-197-1099 is a Washer,flat, manufactured by Rolls-Royce Solutions Gmbh, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-197-1099 has 1 manufacturer part number on file: A10.5DIN125-MS-E3A (Rolls-Royce Solutions Gmbh).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-700-0081. Verify interchangeability with system specifications before substitution.
Key specifications for A10.5DIN125-MS-E3A: Surface Treatment Document and Classification: DIN 267 SHEET 9 NATIONAL SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 21.0 MILLIMETERS NOMINAL MM; Material Document and Classification: DIN 17660 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 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.