The Knob, cataloged under National Stock Number 5355-01-121-5578, is classified within Federal Supply Class 5355 (Knobs and Pointers) of the Hardware and Abrasives group. The manufacturer of record is Raytheon Company Dba Raytheon Co. Government technical data includes 20 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5355-01-121-5578 |
| Primary Part Number | 70B-2-2 |
| Item Name | Knob |
| FSC / FSG | 5355 / 53 — Knobs and Pointers |
| Manufacturer | Raytheon Company Dba Raytheon Co |
| Status | ACTIVE |
| Distance From Hole Center to Knob/skirt Base | 0.369 INCHES MAXIMUM IN |
| Shaft Accommodation Style | COUNTERBORED |
| Overall Thickness | 0.752 INCHES MINIMUM AND 0.812 INCHES MAXIMUM IN |
| Skirt Outside Diameter | 0.680 INCHES MAXIMUM IN |
| Style Designator | SKIRTED/ROUND WITH DOUBLE FIN LEVER |
| Counterbore Depth | 0.188 INCHES MINIMUM IN |
| Reference Marking | LINE |
| Setscrew Hole Quantity | 2 |
| Nominal Thread Size | 0.112 INCHES SCREW HOLE IN |
| Counterbore Diameter | 0.485 INCHES MINIMUM IN |
| Inside Diameter | 0.252 INCHES MINIMUM AND 0.254 INCHES MAXIMUM IN |
| Gripping Surface Condition | GRIP AID |
| Color | BLACK |
| Skirt Design | NONDETACHABLE |
| Width | 1.125 INCHES MINIMUM AND 1.175 INCHES MAXIMUM IN |
| Screw Drive Type | HEXAGON SOCKET |
| Thread Quantity Per Inch | 40 SCREW HOLE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SCREW HOLE |
| Skirt Style | STEPPED |
| 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 |
|---|---|
| 70B-2-2 | Raytheon Company (USA) |
| 70B-2-2 | Electronic Hardware Corp Dba Electronic Hardware Corp (USA) |
| 39-0411-102 | Hamilton Sundstrand Corporation Div Mission Systems (USA) |
| 70B-2-2 PRIMARY | Raytheon Company Dba Raytheon Co (USA) |
| Reference | Meaning |
|---|---|
| 70B-2-2 | 5/9 Secondary reference Raytheon Company Div Corp |
NSN 5355-01-121-5578 is a Knob, manufactured by Raytheon Company Dba Raytheon Co, classified under FSC 5355, Knobs and Pointers. Status: active.
NSN 5355-01-121-5578 has 4 manufacturer part numbers on file: 70B-2-2 (Raytheon Company), 70B-2-2 (Electronic Hardware Corp Dba Electronic Hardware Corp), 39-0411-102 (Hamilton Sundstrand Corporation Div Mission Systems), 70B-2-2 (Raytheon Company Dba Raytheon Co).
Key specifications for 70B-2-2: Distance From Hole Center to Knob/skirt Base: 0.369 INCHES MAXIMUM IN; Shaft Accommodation Style: COUNTERBORED; Overall Thickness: 0.752 INCHES MINIMUM AND 0.812 INCHES MAXIMUM IN; Skirt Outside Diameter: 0.680 INCHES MAXIMUM IN. 20 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.