The Key,woodruff, cataloged under National Stock Number 5315-00-441-4690, is classified within Federal Supply Class 5315 (Nails, Machine Keys, and Pins) of the Hardware and Abrasives group. The manufacturer of record is Honeywell International, Inc Div Aerospace-Tucson. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5315-00-441-4690 |
| Primary Part Number | 20521-7 |
| Item Name | Key,woodruff |
| FSC / FSG | 5315 / 53 — Nails, Machine Keys, and Pins |
| Manufacturer | Honeywell International, Inc Div Aerospace-Tucson |
| Status | ACTIVE |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM OVERALL |
| Starting Edge Shape | STRAIGHT |
| Style Designator | ROUND BOTTOM |
| Circle Diameter | 0.490 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Key Height | 0.182 INCHES MINIMUM AND 0.187 INCHES MAXIMUM IN |
| Key Size Designation | NONSTANDARD SIZE |
| Material | STEEL OVERALL |
| Thickness | 0.125 INCHES MINIMUM AND 0.126 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 |
|---|---|
| 20521-7 | Honeywell International, Inc Div Aerospace-Tucson (USA) |
| 20521-7 | Satair A/s (DNK) |
| Reference | Meaning |
|---|---|
| 20521-7 | 5/9 Secondary reference U.S. Government activity |
| 20521-7 | 5/9 Secondary reference Honeywell Intl Inc Defense Avionics Systems Former Bendix Navigation and Control Systems |
| 20521-7 | 5/9 Secondary reference U.S. Government activity |
| 20521-7 | 3/9 Design control — primary reference Aircraft Parts Corporation |
| 20521-7 | 5/2 Secondary reference U.S. Government activity |
NSN 5315-00-441-4690 is a Key,woodruff, manufactured by Honeywell International, Inc Div Aerospace-Tucson, classified under FSC 5315, Nails, Machine Keys, and Pins. Status: active.
NSN 5315-00-441-4690 has 2 manufacturer part numbers on file: 20521-7 (Honeywell International, Inc Div Aerospace-Tucson), 20521-7 (Satair A/s).
2 possible matches (shared part number, not a government interchangeability claim): 1005-01-593-5576, 4720-01-595-5375. Verify interchangeability with system specifications before substitution.
Key specifications for 20521-7: Hardness Rating: 36.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM OVERALL; Starting Edge Shape: STRAIGHT; Style Designator: ROUND BOTTOM; Circle Diameter: 0.490 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN. 8 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.