The Knob, cataloged under National Stock Number 5355-01-237-4201, is classified within Federal Supply Class 5355 (Knobs and Pointers) of the Hardware and Abrasives group. The manufacturer of record is Lockheed Martin Librascope Corporation. Government technical data includes 8 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5355-01-237-4201 |
| Primary Part Number | L321000339 |
| Item Name | Knob |
| FSC / FSG | 5355 / 53 — Knobs and Pointers |
| Manufacturer | Lockheed Martin Librascope Corporation |
| Status | ACTIVE |
| Shaft Accommodation Style | ROUND |
| Overall Thickness | 0.870 INCHES NOMINAL IN |
| Style Designator | FLUTED FOILS |
| Inside Diameter | 0.250 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN |
| Gripping Surface Condition | GRIP AID |
| Width | 2.500 INCHES NOMINAL IN |
| Attachment Method | SCREW ON |
| Fluted Foil Quantity | 2 |
| 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 |
|---|---|
| L321000339 | Lockheed Martin Librascope Corporation (USA) |
| Reference | Meaning |
|---|---|
| XSI-1294 | 3/9 Design control — primary reference Fuji Shinkuh Kenkyusho Co. |
NSN 5355-01-237-4201 is a Knob, manufactured by Lockheed Martin Librascope Corporation, classified under FSC 5355, Knobs and Pointers. Status: active.
NSN 5355-01-237-4201 has 1 manufacturer part number on file: L321000339 (Lockheed Martin Librascope Corporation).
Key specifications for L321000339: Shaft Accommodation Style: ROUND; Overall Thickness: 0.870 INCHES NOMINAL IN; Style Designator: FLUTED FOILS; Inside Diameter: 0.250 INCHES MINIMUM AND 0.253 INCHES MAXIMUM IN. 8 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.