The Knob, cataloged under National Stock Number 5355-00-629-4737, is classified within Federal Supply Class 5355 (Knobs and Pointers) of the Hardware and Abrasives group. The manufacturer of record is Textron Aviation Inc. Government technical data includes 19 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5355-00-629-4737 |
| Primary Part Number | 50-389003 |
| Item Name | Knob |
| FSC / FSG | 5355 / 53 — Knobs and Pointers |
| Manufacturer | Textron Aviation Inc |
| Status | ACTIVE |
| Distance From Hole Center to Knob/skirt Base | 0.344 INCHES NOMINAL IN |
| Shaft Accommodation Style | ROUND |
| Overall Thickness | 0.719 INCHES NOMINAL IN |
| Skirt Outside Diameter | 0.625 INCHES NOMINAL IN |
| Style Designator | ROUND WITH SINGLE POINTED BAR FACE |
| Outside Diameter | 1.250 INCHES NOMINAL IN |
| Reference Marking | LINE |
| Setscrew Hole Quantity | 2 |
| Nominal Thread Size | 0.138 INCHES SCREW HOLE IN |
| Inside Diameter | 0.252 INCHES MINIMUM AND 0.254 INCHES MAXIMUM IN |
| Pointer Design | NONDETACHABLE |
| Gripping Surface Condition | SMOOTH |
| Skirt Design | NONDETACHABLE |
| Screw Drive Type | CROSS RECESS TYPE 1 |
| Thread Quantity Per Inch | 32 SCREW HOLE |
| Material | PLASTIC |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SCREW HOLE |
| Skirt Style | RING |
| 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 |
|---|---|
| 50-389003 PRIMARY | Textron Aviation Inc (USA) |
| Reference | Meaning |
|---|---|
| 5355L23-000 | 5/2 Secondary reference U.S. Government activity |
| A623 | 5/9 Secondary reference Amsco Inc |
| 50-389003 | 3/9 Design control — primary reference Beechcraft Corporation Dba Textron Aviation |
NSN 5355-00-629-4737 is a Knob, manufactured by Textron Aviation Inc, classified under FSC 5355, Knobs and Pointers. Status: active.
NSN 5355-00-629-4737 has 1 manufacturer part number on file: 50-389003 (Textron Aviation Inc).
2 possible matches (shared part number, not a government interchangeability claim): 2530-00-703-6584, 5315-00-821-6459. Verify interchangeability with system specifications before substitution.
Key specifications for 50-389003: Distance From Hole Center to Knob/skirt Base: 0.344 INCHES NOMINAL IN; Shaft Accommodation Style: ROUND; Overall Thickness: 0.719 INCHES NOMINAL IN; Skirt Outside Diameter: 0.625 INCHES NOMINAL IN. 19 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.