The Knob, cataloged under National Stock Number 5355-00-653-0181, is classified within Federal Supply Class 5355 (Knobs and Pointers) of the Hardware and Abrasives group. The manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5355-00-653-0181 |
| Primary Part Number | S1650-66091-8 |
| Item Name | Knob |
| FSC / FSG | 5355 / 53 — Knobs and Pointers |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Distance From Hole Center to Knob/skirt Base | 0.312 INCHES NOMINAL IN |
| Length | 1.250 INCHES NOMINAL IN |
| Overall Thickness | 0.625 INCHES NOMINAL IN |
| Style Designator | SQUARE OR RECTANGULAR WITH BAR FACE |
| Setscrew Hole Quantity | 1 |
| Nominal Thread Size | 0.164 INCHES SCREW HOLE IN |
| Gripping Surface Condition | SMOOTH |
| Width | 0.500 INCHES NOMINAL IN |
| Screw Drive Type | SLOT |
| Thread Quantity Per Inch | 32 SCREW HOLE |
| Material | PLASTIC PHENOLIC |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) SCREW HOLE |
| 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 |
|---|---|
| S1650-66091-8 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
NSN 5355-00-653-0181 is a Knob, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5355, Knobs and Pointers. Status: active.
NSN 5355-00-653-0181 has 1 manufacturer part number on file: S1650-66091-8 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for S1650-66091-8: Distance From Hole Center to Knob/skirt Base: 0.312 INCHES NOMINAL IN; Length: 1.250 INCHES NOMINAL IN; Overall Thickness: 0.625 INCHES NOMINAL IN; Style Designator: SQUARE OR RECTANGULAR WITH BAR FACE. 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.