The Knob, cataloged under National Stock Number 5355-01-163-6523, is classified within Federal Supply Class 5355 (Knobs and Pointers) of the Hardware and Abrasives group. The manufacturer of record is Acal Radiatron. Government technical data includes 10 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 | 5355-01-163-6523 |
| Primary Part Number | 020-4420 |
| Item Name | Knob |
| FSC / FSG | 5355 / 53 — Knobs and Pointers |
| Manufacturer | Acal Radiatron |
| Status | ACTIVE |
| Shaft Accommodation Style | COUNTERBORED |
| Overall Thickness | 18.0 MILLIMETERS NOMINAL MM |
| Material Transparency | OPAQUE |
| Style Designator | CROWN |
| Outside Diameter | 21.0 MILLIMETERS NOMINAL MM |
| Counterbore Depth | 3.1 MILLIMETERS NOMINAL MM |
| Counterbore Diameter | 16.5 MILLIMETERS NOMINAL MM |
| Inside Diameter | 4.2 MILLIMETERS NOMINAL MM |
| Gripping Surface Condition | GRIP AID |
| Attachment Method | COLLET |
| 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 |
|---|---|
| 020-4420 PRIMARY | Acal Radiatron (GBR) |
NSN 5355-01-163-6523 is a Knob, manufactured by Acal Radiatron, classified under FSC 5355, Knobs and Pointers. Status: active.
NSN 5355-01-163-6523 has 1 manufacturer part number on file: 020-4420 (Acal Radiatron).
Key specifications for 020-4420: Shaft Accommodation Style: COUNTERBORED; Overall Thickness: 18.0 MILLIMETERS NOMINAL MM; Material Transparency: OPAQUE; Style Designator: CROWN. 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.