The Washer,flat, cataloged under National Stock Number 5310-00-217-1994, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Northrop Grumman Systems Corporation. 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5310-00-217-1994 |
| Primary Part Number | 210915 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | CANCELLED |
| Overall Diameter | 0.672 INCHES MINIMUM AND 0.703 INCHES MAXIMUM IN |
| Hardness Rating | 94.0 ROCKWELL C NOMINAL |
| Material Document and Classification | QQ-S-766 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 302 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.380 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN |
| Thickness | 0.032 INCHES NOMINAL IN |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 210915 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| 2W1C25-22-32 | C/1 Advisory reference — outside the item-of-supply concept The Boeing Company Div Legacy Am&m |
| 328667 | E/8 Replaced / superseded reference Lockheed Martin Corporation Div Rms - Mitchel Field |
| S107-4 | 5/9 Secondary reference Burton Medical Products Corporation |
| 328667 | E/8 Replaced / superseded reference Northrop Grumman Systems Corporation |
| 12M3570-17 | 5/9 Secondary reference U.S. Government activity |
| 210915 | 5/9 Secondary reference Lockheed Martin Corporation Div Rms - Mitchel Field |
NSN 5310-00-217-1994 is a Washer,flat, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5310, Nuts and Washers. Status: cancelled.
NSN 5310-00-217-1994 has 1 manufacturer part number on file: 210915 (Northrop Grumman Systems Corporation).
3 possible matches (shared part number, not a government interchangeability claim): 3040-00-933-0347, 2815-01-241-4719, 6685-01-596-0519. Verify interchangeability with system specifications before substitution.
Key specifications for 210915: Overall Diameter: 0.672 INCHES MINIMUM AND 0.703 INCHES MAXIMUM IN; Hardness Rating: 94.0 ROCKWELL C NOMINAL; Material Document and Classification: QQ-S-766 FED 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.
NSN 5310-00-217-1994 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.