The Washer,key, cataloged under National Stock Number 5310-01-154-4331, 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 11 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-154-4331 |
| Primary Part Number | 74A410701-2005 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Internal Straight Key Width | 0.230 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN |
| Distance From Centerline to Top of Internal Key | 0.810 INCHES MINIMUM AND 0.815 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | STF1217,FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Style Designator | KEY |
| Material Document and Classification | MIL-S-25043,COND TH1050 MIL SPEC 1ST MATERIAL RESPONSE OR AMS 5520,COND TH1050 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Outside Diameter | 2.630 INCHES NOMINAL IN |
| Material Thickness | 0.090 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Material | STEEL COMP 631 OR STEEL COMP 632 OVERALL |
| Internal Key Quantity | 2 |
| Hole Diameter | 1.760 INCHES MINIMUM AND 1.775 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 |
|---|---|
| 74A410701-2005 PRIMARY | The Boeing Company Div Defense (USA) |
NSN 5310-01-154-4331 is a Washer,key, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-154-4331 has 1 manufacturer part number on file: 74A410701-2005 (The Boeing Company Div Defense).
Key specifications for 74A410701-2005: Internal Straight Key Width: 0.230 INCHES MINIMUM AND 0.240 INCHES MAXIMUM IN; Distance From Centerline to Top of Internal Key: 0.810 INCHES MINIMUM AND 0.815 INCHES MAXIMUM IN; Surface Treatment Document and Classification: STF1217,FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Style Designator: KEY. 11 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.