The Washer,flat, cataloged under National Stock Number 5310-01-527-1871, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Polyamp Aktiebolag Div Polyamp Ab. Government technical data includes 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-527-1871 |
| Primary Part Number | 101698 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Polyamp Aktiebolag Div Polyamp Ab |
| Status | ACTIVE |
| Overall Diameter | 9.0 MILLIMETERS NOMINAL MM |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL CORROSION RESISTING OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 4.3 MILLIMETERS NOMINAL MM |
| Thickness | 0.8 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 |
|---|---|
| 101698 PRIMARY | Polyamp Aktiebolag Div Polyamp Ab (SWE) |
| DIN125A-M4-A2 | Maryland Metrics (USA) |
| Reference | Meaning |
|---|---|
| 101698 | 3/9 Design control — primary reference Polyamp Ab |
| DIN25A-M4-A2 | 5/9 Secondary reference Maryland Metrics |
NSN 5310-01-527-1871 is a Washer,flat, manufactured by Polyamp Aktiebolag Div Polyamp Ab, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-527-1871 has 2 manufacturer part numbers on file: 101698 (Polyamp Aktiebolag Div Polyamp Ab), DIN125A-M4-A2 (Maryland Metrics).
Key specifications for 101698: Overall Diameter: 9.0 MILLIMETERS NOMINAL MM; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND; Material: STEEL CORROSION RESISTING OVERALL. 7 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.