The Track Ball, cataloged under National Stock Number 5840-01-099-9176, is classified within Federal Supply Class 5840 (Radar Equipment, Except Airborne) of the Communication, Detection, and Coherent Radiation Equipment group. The manufacturer of record is Orbit International Corp. Div Orbit Instrument. Government technical data includes 1 specification, 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 | 5840-01-099-9176 |
| Primary Part Number | 55844 |
| Item Name | Track Ball |
| FSC / FSG | 5840 / 58 — Radar Equipment, Except Airborne |
| Manufacturer | Orbit International Corp. Div Orbit Instrument |
| Status | ACTIVE |
| General Characteristics Item Description | OUTPUT TRUE 3.4 VDC; OUTPUT FALSE 0.4 VDC; PLUS DIRECTION BALL MOVEMENTCAUSES CODE TO BE LOGIC TRUE; MINUS BALL DIRECTION CAUSES LOGIC FALSE; ONE REVOLUTION OF BALL PRODUCES A SQUARE WAVE PULSE OF 256 TO 275 PULSES; 6.120 IN. LG; 4.120 IN. W; 2.344 IN. H; BALL DIAMETER 2.000 IN. VDC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 55844 PRIMARY | Orbit International Corp. Div Orbit Instrument (USA) |
| 361367-021 | Raytheon Company Div Rmd Strategic (USA) |
NSN 5840-01-099-9176 is a Track Ball, manufactured by Orbit International Corp. Div Orbit Instrument, classified under FSC 5840, Radar Equipment, Except Airborne. Status: active.
NSN 5840-01-099-9176 has 2 manufacturer part numbers on file: 55844 (Orbit International Corp. Div Orbit Instrument), 361367-021 (Raytheon Company Div Rmd Strategic).
Key specifications for 55844: General Characteristics Item Description: OUTPUT TRUE 3.4 VDC; OUTPUT FALSE 0.4 VDC; PLUS DIRECTION BALL MOVEMENTCAUSES CODE TO BE LOGIC TRUE; MINUS BALL DIRECTION CAUSES LOGIC FALSE; ONE REVOLUTION OF BALL PRODUCES A SQUARE WAVE PULSE OF 256 TO 275 PULSES; 6.120 IN. LG; 4.120 IN. W; 2.344 IN. H; BALL DIAMETER 2.000 IN. VDC. 1 specification is 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.
NSN 5840-01-099-9176 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.