The Washer,key, cataloged under National Stock Number 5310-01-166-6151, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Hamilton Sundstrand Corporation Dba Collins Aerospace. Government technical data includes 9 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 | 5310-01-166-6151 |
| Primary Part Number | 557225 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Hamilton Sundstrand Corporation Dba Collins Aerospace |
| Status | ACTIVE |
| Overall Distance Including Keys | 1.240 INCHES NOMINAL IN |
| Hardness Rating | 83.0 ROCKWELL SUPERFICIAL 15-T MINIMUM AND 93.0 ROCKWELL SUPERFICIAL 15-T MAXIMUM |
| Material Document and Classification | AMS 5513 ASSN STD 1ST MATERIAL RESPONSE AND MIL-S-5059 MIL SPEC 2ND MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.080 INCHES NOMINAL IN |
| Material Thickness | 0.031 INCHES NOMINAL IN |
| External Key Quantity | 3 |
| External Prebent Key Width | 0.260 INCHES NOMINAL IN |
| Material | STEEL COMP 304 AND STEEL COMP 302 OVERALL |
| Hole Diameter | 0.890 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 |
|---|---|
| 557225 PRIMARY | Hamilton Sundstrand Corporation Dba Collins Aerospace (USA) |
NSN 5310-01-166-6151 is a Washer,key, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-166-6151 has 1 manufacturer part number on file: 557225 (Hamilton Sundstrand Corporation Dba Collins Aerospace).
Key specifications for 557225: Overall Distance Including Keys: 1.240 INCHES NOMINAL IN; Hardness Rating: 83.0 ROCKWELL SUPERFICIAL 15-T MINIMUM AND 93.0 ROCKWELL SUPERFICIAL 15-T MAXIMUM; Material Document and Classification: AMS 5513 ASSN STD 1ST MATERIAL RESPONSE AND MIL-S-5059 MIL SPEC 2ND MATERIAL RESPONSE OVERALL; Outside Diameter: 1.080 INCHES NOMINAL IN. 9 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.