The Washer,key, cataloged under National Stock Number 5310-01-108-7516, 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 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-108-7516 |
| Primary Part Number | 74A450673-2003 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Wire Hole Diameter | 0.190 INCHES NOMINAL IN |
| Internal Prebent Key Width | 0.220 INCHES NOMINAL IN |
| Distance From Key Center to Wire Hole Center | 0.110 INCHES NOMINAL IN |
| Hardness Rating | 33.0 ROCKWELL C MAXIMUM |
| Style Designator | INTERNAL PREBENT KEY |
| Material Document and Classification | MIL-S-8844,CLASS 1 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 3.180 INCHES NOMINAL IN |
| Material Thickness | 0.187 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Hole Diameter | 2.755 INCHES MINIMUM AND 2.765 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 |
|---|---|
| 74A450673-2003 | Heroux-Devtek Inc (CAN) |
| 74A450673-2003 PRIMARY | The Boeing Company Div Defense (USA) |
| 74A450673-2003 | Safran Landing Systems Canada Inc. (CAN) |
| 74A450673-2003 | Goodrich Corporation (USA) |
| Reference | Meaning |
|---|---|
| 74A450673-2003 | 5/9 Secondary reference Goodrich Corp Dba Goodrich Corp |
| 74A450673-2003 | C/1 Advisory reference — outside the item-of-supply concept Circor Aerospace, Inc. Div Circor |
| 74A450673-2003 | 5/9 Secondary reference All Tools, Inc. Dba E2 Precision Products |
| 74A450673-2003 | 5/9 Secondary reference Israel Aerospace Industries Ltd. Shl - Aero Assemblies Division |
| 74A450673-2003 | 5/9 Secondary reference Circor Aerospace, Inc. Dba Circor Aerospace Machining Center |
| 74A450673-2003 | C/1 Advisory reference — outside the item-of-supply concept Israel Aerospace Industries Ltd.shl-Aero Assemblies Division |
| 74A450673-2003 | C/1 Advisory reference — outside the item-of-supply concept Goodrich Corporation Div Advanced Structures Landing Systems |
| 74A450673-2003 | 5/9 Secondary reference Israel Aircraft Industries Ltd Marketing Directorate |
NSN 5310-01-108-7516 is a Washer,key, manufactured by The Boeing Company Div Defense, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-108-7516 has 4 manufacturer part numbers on file: 74A450673-2003 (Heroux-Devtek Inc), 74A450673-2003 (The Boeing Company Div Defense), 74A450673-2003 (Safran Landing Systems Canada Inc.), 74A450673-2003 (Goodrich Corporation).
Key specifications for 74A450673-2003: Wire Hole Diameter: 0.190 INCHES NOMINAL IN; Internal Prebent Key Width: 0.220 INCHES NOMINAL IN; Distance From Key Center to Wire Hole Center: 0.110 INCHES NOMINAL IN; Hardness Rating: 33.0 ROCKWELL C MAXIMUM. 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.