The Washer,keyway, cataloged under National Stock Number 5310-01-124-5250, 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 7 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-124-5250 |
| Primary Part Number | 74A410516-2001 |
| Item Name | Washer,keyway |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| External Keyway Width | 0.290 INCHES NOMINAL IN |
| External Keyway Quantity | 6 |
| Material Document and Classification | MIL-S-8844,CL 1,COND E2 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 2.312 INCHES NOMINAL IN |
| Material Thickness | 0.186 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN |
| Material | STEEL COMP 4340 OVERALL |
| Hole Diameter | 1.900 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 |
|---|---|
| 74A410516-2001 | Safran Landing Systems Canada Inc. (CAN) |
| 74A410516-2001 PRIMARY | The Boeing Company Div Defense (USA) |
| 74A410516-2001 | Cm Manufacturing Inc Dba Cm Manufacturing Inc (USA) |
| 74A410516-2001 | Nassau Tool Works, Inc (USA) |
| Reference | Meaning |
|---|---|
| 10109423 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 74A410516-2001 | 5/9 Secondary reference Circor Aerospace, Inc. Dba Circor Aerospace Machining Center |
| 74A410516-2001 | 5/9 Secondary reference Associated Aircraft Manufacturing & Sales, Inc. Dba Associated Aircraft Manufacturing & Sales Inc |
| 74A410516-2001 | 5/9 Secondary reference All Tools, Inc. Dba E2 Precision Products |
| 74A410516-2001 | 5/2 Secondary reference U.S. Government activity |
| 74A410516-2001 | 5/9 Secondary reference Goodrich Corporation Div Advanced Structures Landing Systems |
NSN 5310-01-124-5250 is a Washer,keyway, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-124-5250 has 4 manufacturer part numbers on file: 74A410516-2001 (Safran Landing Systems Canada Inc.), 74A410516-2001 (The Boeing Company Div Defense), 74A410516-2001 (Cm Manufacturing Inc Dba Cm Manufacturing Inc), 74A410516-2001 (Nassau Tool Works, Inc).
Key specifications for 74A410516-2001: External Keyway Width: 0.290 INCHES NOMINAL IN; External Keyway Quantity: 6; Material Document and Classification: MIL-S-8844,CL 1,COND E2 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 2.312 INCHES NOMINAL IN. 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.