The Knob, cataloged under National Stock Number 5355-01-388-1455, 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 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5355-01-388-1455 |
| Primary Part Number | CTS215B-4 |
| Item Name | Knob |
| FSC / FSG | 5355 / 53 — Knobs and Pointers |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Shaft Accommodation Style | ROUND |
| Length | 1.500 INCHES NOMINAL IN |
| Overall Thickness | 3.875 INCHES NOMINAL IN |
| Style Designator | CROSS |
| Nominal Thread Size | 0.312 INCHES SCREW HOLE IN |
| Inside Diameter | 0.312 INCHES NOMINAL IN |
| Gripping Surface Condition | GRIP AID |
| Width | 1.500 INCHES NOMINAL IN |
| Thread Quantity Per Inch | 18 SCREW HOLE |
| Material | IRON CAST |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SCREW HOLE |
| Attachment Method | STUD |
| 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 |
|---|---|
| CTS215B-4 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| RE168230021-184 | 5/9 Secondary reference The Boeing Company Div Defense |
NSN 5355-01-388-1455 is a Knob, manufactured by The Boeing Company Div Defense, classified under FSC 5355, Knobs and Pointers. Status: active.
NSN 5355-01-388-1455 has 1 manufacturer part number on file: CTS215B-4 (The Boeing Company Div Defense).
Key specifications for CTS215B-4: Shaft Accommodation Style: ROUND; Length: 1.500 INCHES NOMINAL IN; Overall Thickness: 3.875 INCHES NOMINAL IN; Style Designator: CROSS. 12 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.