The Knob, cataloged under National Stock Number 5355-01-603-5590, is classified within Federal Supply Class 5355 (Knobs and Pointers) of the Hardware and Abrasives group. The manufacturer of record is Baco Controls Inc. Government technical data includes 15 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 | 5355-01-603-5590 |
| Primary Part Number | L21MF30 |
| Item Name | Knob |
| FSC / FSG | 5355 / 53 — Knobs and Pointers |
| Manufacturer | Baco Controls Inc |
| Status | ACTIVE |
| Overall Thickness | 23.0 MILLIMETERS NOMINAL MM |
| Skirt Outside Diameter | 29.9 MILLIMETERS NOMINAL MM |
| Shank Length | 43.0 MILLIMETERS NOMINAL MM |
| Style Designator | ROUND WITH SINGLE POINTED BAR FACE |
| Outside Diameter | 29.9 MILLIMETERS NOMINAL MM |
| Setscrew Hole Quantity | 0 |
| Unthreaded Stud Style | ROUND |
| Shank Style | STRAIGHT |
| Pointer Design | NONDETACHABLE |
| Color | BLACK |
| Skirt Design | NONDETACHABLE |
| Material | PLASTIC |
| Skirt Style | STRAIGHT |
| Stud Diameter | 29.0 MILLIMETERS NOMINAL MM |
| Attachment Method | CLAMP |
| 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 |
|---|---|
| L21MF30 PRIMARY | Baco Controls Inc (USA) |
NSN 5355-01-603-5590 is a Knob, manufactured by Baco Controls Inc, classified under FSC 5355, Knobs and Pointers. Status: active.
NSN 5355-01-603-5590 has 1 manufacturer part number on file: L21MF30 (Baco Controls Inc).
Key specifications for L21MF30: Overall Thickness: 23.0 MILLIMETERS NOMINAL MM; Skirt Outside Diameter: 29.9 MILLIMETERS NOMINAL MM; Shank Length: 43.0 MILLIMETERS NOMINAL MM; Style Designator: ROUND WITH SINGLE POINTED BAR FACE. 15 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.