The Knob, cataloged under National Stock Number 5355-00-720-5526, is classified within Federal Supply Class 5355 (Knobs and Pointers) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Corporation Div Rotary and Mission Systems. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5355-00-720-5526 |
| Primary Part Number | 6040227 |
| Item Name | Knob |
| FSC / FSG | 5355 / 53 — Knobs and Pointers |
| Manufacturer | Lockheed Martin Corporation Div Rotary and Mission Systems |
| Status | ACTIVE |
| Shaft Accommodation Style | ROUND |
| Overall Thickness | 0.500 INCHES NOMINAL IN |
| Style Designator | FLUTED FOILS |
| Setscrew Hole Quantity | 2 |
| Inside Diameter | 0.250 INCHES NOMINAL IN |
| Shank Style | STRAIGHT |
| Gripping Surface Condition | SMOOTH |
| Width | 0.875 INCHES MAXIMUM IN |
| Screw Drive Type | HEXAGON SOCKET |
| Material | PLASTIC CELLULOSE ACETATE BUTYRATE |
| 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 |
|---|---|
| 6040227 | International Business Machines Corp Parts Order Center Dept E - 54 (USA) |
| 6040227 PRIMARY | Lockheed Martin Corporation Div Rotary and Mission Systems (USA) |
| 231-1057G27 | Raytheon Company Div Corp (USA) |
| Reference | Meaning |
|---|---|
| 6040227 | 5/9 Secondary reference International Business Machines Corporation Dba IBM |
NSN 5355-00-720-5526 is a Knob, manufactured by Lockheed Martin Corporation Div Rotary and Mission Systems, classified under FSC 5355, Knobs and Pointers. Status: active.
NSN 5355-00-720-5526 has 3 manufacturer part numbers on file: 6040227 (International Business Machines Corp Parts Order Center Dept E - 54), 6040227 (Lockheed Martin Corporation Div Rotary and Mission Systems), 231-1057G27 (Raytheon Company Div Corp).
Key specifications for 6040227: Shaft Accommodation Style: ROUND; Overall Thickness: 0.500 INCHES NOMINAL IN; Style Designator: FLUTED FOILS; Setscrew Hole Quantity: 2. 11 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.