The Knob, cataloged under National Stock Number 5355-01-229-3556, is classified within Federal Supply Class 5355 (Knobs and Pointers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 15 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 | 5355-01-229-3556 |
| Primary Part Number | CTS215A-3 |
| Item Name | Knob |
| FSC / FSG | 5355 / 53 — Knobs and Pointers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Shank Diameter | 0.750 INCHES NOMINAL IN |
| Shaft Accommodation Style | ROUND |
| Length | 2.125 INCHES NOMINAL IN |
| Overall Thickness | 0.500 INCHES NOMINAL IN |
| Shank Length | 0.625 INCHES NOMINAL IN |
| Style Designator | CROSS |
| Nominal Thread Size | 0.375 INCHES SCREW HOLE IN |
| Inside Diameter | 0.375 INCHES NOMINAL IN |
| Shank Style | STRAIGHT |
| Gripping Surface Condition | GRIP AID |
| Width | 2.125 INCHES NOMINAL IN |
| Thread Quantity Per Inch | 16 SCREW HOLE |
| Material | IRON CAST |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SCREW HOLE |
| Attachment Method | SCREW ON |
| 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 |
|---|---|
| CTS215A-3 PRIMARY | The Boeing Company Div Defense (USA) |
NSN 5355-01-229-3556 is a Knob, manufactured by The Boeing Company Div Defense, classified under FSC 5355, Knobs and Pointers. Status: active.
NSN 5355-01-229-3556 has 1 manufacturer part number on file: CTS215A-3 (The Boeing Company Div Defense).
Key specifications for CTS215A-3: Shank Diameter: 0.750 INCHES NOMINAL IN; Shaft Accommodation Style: ROUND; Length: 2.125 INCHES NOMINAL IN; Overall Thickness: 0.500 INCHES NOMINAL IN. 15 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.