The Washer,recessed, cataloged under National Stock Number 5310-01-163-4530, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-163-4530 |
| Primary Part Number | 7-211511217 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Radius | 0.030 INCHES NOMINAL IN |
| Style Designator | RECESSED |
| Material Document and Classification | MIL-N-18352 MIL SPEC ALL MATERIAL RESPONSES OVERALL |
| Outside Diameter | 2.500 INCHES NOMINAL IN |
| Recess Diameter | 1.770 INCHES NOMINAL IN |
| Test Data Document | 02731-7-211511217 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING) |
| Material | PLASTIC POLYAMIDE NYLON OVERALL |
| Hole Diameter | 1.265 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 |
|---|---|
| 7-211511217 PRIMARY | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| 7-211511217 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
NSN 5310-01-163-4530 is a Washer,recessed, manufactured by The Boeing Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-163-4530 has 1 manufacturer part number on file: 7-211511217 (The Boeing Company).
Key specifications for 7-211511217: Overall Height: 0.160 INCHES NOMINAL IN; Radius: 0.030 INCHES NOMINAL IN; Style Designator: RECESSED; Material Document and Classification: MIL-N-18352 MIL SPEC ALL MATERIAL RESPONSES OVERALL. 8 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.