The Knob, cataloged under National Stock Number 5355-01-020-5281, is classified within Federal Supply Class 5355 (Knobs and Pointers) of the Hardware and Abrasives group. The manufacturer of record is Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems. Government technical data includes 16 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 | 5355-01-020-5281 |
| Primary Part Number | 546-9508-003 |
| Item Name | Knob |
| FSC / FSG | 5355 / 53 — Knobs and Pointers |
| Manufacturer | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems |
| Status | ACTIVE |
| Distance From Hole Center to Knob/skirt Base | 0.656 INCHES NOMINAL IN |
| Shaft Accommodation Style | COUNTERBORED |
| Overall Thickness | 0.904 INCHES MINIMUM AND 0.914 INCHES MAXIMUM IN |
| Style Designator | ROUND |
| Outside Diameter | 0.750 INCHES NOMINAL IN |
| Counterbore Depth | 0.550 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN |
| Reference Marking | HDG SET |
| Setscrew Hole Quantity | 2 |
| Nominal Thread Size | 0.112 INCHES SCREW HOLE IN |
| Counterbore Diameter | 0.651 INCHES MINIMUM AND 0.661 INCHES MAXIMUM IN |
| Inside Diameter | 0.250 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN |
| Gripping Surface Condition | GRIP AID |
| Color | GRAY, FED STD 595, 36231 |
| Thread Quantity Per Inch | 40 SCREW HOLE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SCREW HOLE |
| Attachment Method | SETSCREWS |
| 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 |
|---|---|
| 546-9508-003 PRIMARY | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA) |
NSN 5355-01-020-5281 is a Knob, manufactured by Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems, classified under FSC 5355, Knobs and Pointers. Status: active.
NSN 5355-01-020-5281 has 1 manufacturer part number on file: 546-9508-003 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems).
Key specifications for 546-9508-003: Distance From Hole Center to Knob/skirt Base: 0.656 INCHES NOMINAL IN; Shaft Accommodation Style: COUNTERBORED; Overall Thickness: 0.904 INCHES MINIMUM AND 0.914 INCHES MAXIMUM IN; Style Designator: ROUND. 16 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.