The Washer,key, cataloged under National Stock Number 5310-00-033-4617, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-033-4617 |
| Primary Part Number | 9M70B2 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Internal Straight Key Width | 0.045 INCHES NOMINAL IN |
| Distance From Centerline to Top of Internal Key | 0.236 INCHES NOMINAL IN |
| Style Designator | INTERNAL KEY |
| Material Document and Classification | SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.812 INCHES NOMINAL IN |
| Material Thickness | 0.040 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL COMP 1050 OVERALL |
| Internal Key Quantity | 2 |
| Hole Diameter | 0.570 INCHES MINIMUM AND 0.575 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 |
|---|---|
| 9M70B2 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 295852 | 5/9 Secondary reference Monadnock Company, the Dba Lisi Aerospace |
NSN 5310-00-033-4617 is a Washer,key, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-033-4617 has 1 manufacturer part number on file: 9M70B2 (The Boeing Company Div Defense).
2 possible matches (shared part number, not a government interchangeability claim): 2805-00-895-0076, 6105-01-017-2672. Verify interchangeability with system specifications before substitution.
Key specifications for 9M70B2: Internal Straight Key Width: 0.045 INCHES NOMINAL IN; Distance From Centerline to Top of Internal Key: 0.236 INCHES NOMINAL IN; Style Designator: INTERNAL KEY; Material Document and Classification: SAE ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 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.