The Knob, cataloged under National Stock Number 5355-01-040-2122, 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 24 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 | 5355-01-040-2122 |
| Primary Part Number | 757-0231-024 |
| 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 |
| Shank Diameter | 0.617 INCHES MINIMUM AND 0.623 INCHES MAXIMUM IN |
| Distance From Hole Center to Knob/skirt Base | 0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN |
| Shaft Accommodation Style | COUNTERBORED |
| Length | 0.850 INCHES MINIMUM AND 0.880 INCHES MAXIMUM IN |
| Overall Thickness | 0.995 INCHES MINIMUM AND 1.005 INCHES MAXIMUM IN |
| Skirt Outside Diameter | 0.995 INCHES MINIMUM AND 1.005 INCHES MAXIMUM IN |
| Shank Length | 0.093 INCHES NOMINAL IN |
| Style Designator | ROUND WITH FIN LEVER |
| Outside Diameter | 0.690 INCHES MINIMUM AND 0.720 INCHES MAXIMUM IN |
| Counterbore Depth | 0.125 INCHES NOMINAL IN |
| Reference Marking | LINE AND SLOT |
| Setscrew Hole Quantity | 2 |
| Nominal Thread Size | 0.164 INCHES SCREW HOLE IN |
| Counterbore Diameter | 0.507 INCHES MINIMUM AND 0.513 INCHES MAXIMUM IN |
| Inside Diameter | 0.252 INCHES MINIMUM AND 0.254 INCHES MAXIMUM IN |
| Shank Style | STRAIGHT |
| Gripping Surface Condition | GRIP AID |
| Color | BLACK |
| Skirt Design | DETACHABLE |
| Screw Drive Type | HEXAGON SOCKET |
| Thread Quantity Per Inch | 32 SCREW HOLE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SCREW HOLE |
| Skirt Style | FLARED |
| 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 |
|---|---|
| 757-0231-024 PRIMARY | Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA) |
NSN 5355-01-040-2122 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 5355-01-040-2122 has 1 manufacturer part number on file: 757-0231-024 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems).
Key specifications for 757-0231-024: Shank Diameter: 0.617 INCHES MINIMUM AND 0.623 INCHES MAXIMUM IN; Distance From Hole Center to Knob/skirt Base: 0.250 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN; Shaft Accommodation Style: COUNTERBORED; Length: 0.850 INCHES MINIMUM AND 0.880 INCHES MAXIMUM IN. 24 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.