The Knob, cataloged under National Stock Number 5355-00-893-5894, is classified within Federal Supply Class 5355 (Knobs and Pointers) of the Hardware and Abrasives group. The manufacturer of record is Rotair Aerospace Corp. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5355-00-893-5894 |
| Primary Part Number | R1320-4 |
| Item Name | Knob |
| FSC / FSG | 5355 / 53 — Knobs and Pointers |
| Manufacturer | Rotair Aerospace Corp |
| Status | ACTIVE |
| Distance From Hole Center to Knob/skirt Base | 0.187 INCHES NOMINAL IN |
| Shaft Accommodation Style | ROUND |
| Overall Thickness | 1.099 INCHES NOMINAL IN |
| Skirt Outside Diameter | 1.150 INCHES NOMINAL IN |
| Style Designator | ROUND WITH TRIANGULAR FACE |
| Outside Diameter | 0.708 INCHES MAXIMUM IN |
| Reference Marking | ARROW |
| Setscrew Hole Quantity | 2 |
| Nominal Thread Size | 0.112 INCHES SCREW HOLE IN |
| Inside Diameter | 0.250 INCHES NOMINAL IN |
| Gripping Surface Condition | GRIP AID |
| Skirt Design | DETACHABLE |
| 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 |
|---|---|
| S6190-61075-4 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| R1320-4 PRIMARY | Rotair Aerospace Corp (USA) |
NSN 5355-00-893-5894 is a Knob, manufactured by Rotair Aerospace Corp, classified under FSC 5355, Knobs and Pointers. Status: active.
NSN 5355-00-893-5894 has 2 manufacturer part numbers on file: S6190-61075-4 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), R1320-4 (Rotair Aerospace Corp).
Key specifications for R1320-4: Distance From Hole Center to Knob/skirt Base: 0.187 INCHES NOMINAL IN; Shaft Accommodation Style: ROUND; Overall Thickness: 1.099 INCHES NOMINAL IN; Skirt Outside Diameter: 1.150 INCHES NOMINAL IN. 17 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.