The Knob, cataloged under National Stock Number 5355-00-644-1645, is classified within Federal Supply Class 5355 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Raytheon Company Dba Raytheon. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5355-00-644-1645 |
| Primary Part Number | 20284 |
| Item Name | Knob |
| FSC / FSG | 5355 / 53 — No Item Name Available |
| Manufacturer | Raytheon Company Dba Raytheon |
| Status | ACTIVE |
| Outside Diameter | 0.500 INCHES NOMINAL IN |
| Attachment Method | SETSCREWS |
| Inside Diameter | 0.251 INCHES MINIMUM AND 0.254 INCHES MAXIMUM IN |
| Material | COPPER ALLOY |
| Color | BLACK |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SCREW HOLE |
| Thread Quantity Per Inch | 32 SCREW HOLE |
| Nominal Thread Size | 0.138 INCHES SCREW HOLE IN |
| Style Designator | ROUND |
| Shaft Accommodation Style | ROUND |
| Shank Diameter | 0.375 INCHES NOMINAL IN |
| Screw Drive Type | HEXAGON SOCKET |
| Shank Length | 0.188 INCHES NOMINAL IN |
| Gripping Surface Condition | GRIP AID |
| Overall Thickness | 0.437 INCHES NOMINAL IN |
| Setscrew Hole Quantity | 2 |
| Shank Style | STRAIGHT |
| Distance From Hole Center to Knob/skirt Base | 0.312 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 20284 PRIMARY | Raytheon Company Dba Raytheon (USA) |
| 756-3142 | Lockheed Martin Corporation Div Lockheed Martin Information Systems & Global Solutions (USA) |
| 336A146 | General Dynamics Mission Systems, Inc. Dba Gdms (USA) |
| 336A146 | Motorola Inc. Dba Integrated Information Systems Group (USA) |
| 20283 PRIMARY | Raytheon Company Dba Raytheon (USA) |
NSN 5355-00-644-1645 is a Knob, manufactured by Raytheon Company Dba Raytheon, classified under FSC 5355 (No Item Name Available). Status: active.
NSN 5355-00-644-1645 has 5 cross-referenced part numbers: 20284 (Raytheon Company Dba Raytheon), 756-3142 (Lockheed Martin Corporation Div Lockheed Martin Information Systems & Global Solutions), 336A146 (General Dynamics Mission Systems, Inc. Dba Gdms), 336A146 (Motorola Inc. Dba Integrated Information Systems Group), 20283 (Raytheon Company Dba Raytheon).
There are 7 known substitutes for 5355-00-644-1645: 4730-00-142-2044, 3455-00-531-1327, 4820-01-088-0813 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for 20284: Outside Diameter: 0.500 INCHES NOMINAL IN; Attachment Method: SETSCREWS; Inside Diameter: 0.251 INCHES MINIMUM AND 0.254 INCHES MAXIMUM IN; Material: COPPER ALLOY. 19 total characteristics are documented in the Federal Logistics Information System.