The Knob, cataloged under National Stock Number 5355-01-234-9485, is classified within Federal Supply Class 5355 (Knobs and Pointers) of the Hardware and Abrasives group. The manufacturer of record is Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc. Government technical data includes 13 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 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5355-01-234-9485 |
| Primary Part Number | 40504-1 |
| Item Name | Knob |
| FSC / FSG | 5355 / 53 — Knobs and Pointers |
| Manufacturer | Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc |
| Status | ACTIVE |
| Shaft Accommodation Style | ROUND |
| Overall Thickness | 1.500 INCHES NOMINAL IN |
| Material Transparency | OPAQUE |
| Style Designator | ROUND |
| Outside Diameter | 1.250 INCHES NOMINAL IN |
| Nominal Thread Size | 1.000 INCHES SCREW HOLE IN |
| Inside Diameter | 1.000 INCHES NOMINAL IN |
| Gripping Surface Condition | GRIP AID |
| Color | BLUE |
| Thread Quantity Per Inch | 12 SCREW HOLE |
| Material | ALUMINUM ALLOY 6061 |
| 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 |
|---|---|
| 40504-1 PRIMARY | Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc (USA) |
NSN 5355-01-234-9485 is a Knob, manufactured by Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc, classified under FSC 5355, Knobs and Pointers. Status: active.
NSN 5355-01-234-9485 has 1 manufacturer part number on file: 40504-1 (Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc).
1 possible match (shared part number, not a government interchangeability claim): 6110-01-359-5381. Verify interchangeability with system specifications before substitution.
Key specifications for 40504-1: Shaft Accommodation Style: ROUND; Overall Thickness: 1.500 INCHES NOMINAL IN; Material Transparency: OPAQUE; Style Designator: ROUND. 13 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.