The Washer,key, cataloged under National Stock Number 5310-01-366-7604, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Sundstrand Corp. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-366-7604 |
| Primary Part Number | 969C539-1 |
| Item Name | Washer,key |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sundstrand Corp |
| Status | ACTIVE |
| Internal Prebent Key Width | 0.156 INCHES NOMINAL IN |
| Overall Distance Including Keys | 2.040 INCHES MINIMUM AND 2.060 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5528 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 1.600 INCHES MINIMUM AND 1.620 INCHES MAXIMUM IN |
| Material Thickness | 0.040 INCHES NOMINAL IN |
| External Key Quantity | 13 |
| Internal Prebent Key Length | 0.050 INCHES NOMINAL IN |
| External Prebent Key Width | 0.156 INCHES NOMINAL IN |
| Material | STEEL COMP 631 OVERALL |
| Internal Key Quantity | 2 |
| Hole Diameter | 0.877 INCHES MINIMUM AND 0.887 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 |
|---|---|
| 969C539-1 PRIMARY | Sundstrand Corp (USA) |
| Reference | Meaning |
|---|---|
| 969C539-1 | 5/9 Secondary reference U.S. Government activity |
| 969C539-1 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-366-7604 is a Washer,key, manufactured by Sundstrand Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-366-7604 has 1 manufacturer part number on file: 969C539-1 (Sundstrand Corp).
Key specifications for 969C539-1: Internal Prebent Key Width: 0.156 INCHES NOMINAL IN; Overall Distance Including Keys: 2.040 INCHES MINIMUM AND 2.060 INCHES MAXIMUM IN; Material Document and Classification: AMS 5528 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 1.600 INCHES MINIMUM AND 1.620 INCHES MAXIMUM IN. 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.