The Test Set,helmet Unit,integrated, cataloged under National Stock Number 4931-01-494-6768, is classified within Federal Supply Class 4931 (Fire Control Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is Rockwell Collins, Inc. Dba Rc Displays Systems. Government technical data includes 3 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4931-01-494-6768 |
| Primary Part Number | 135900-69 |
| Item Name | Test Set,helmet Unit,integrated |
| FSC / FSG | 4931 / 49 — Fire Control Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | Rockwell Collins, Inc. Dba Rc Displays Systems |
| Status | ACTIVE |
| Reference Data and Literature | SERD 5594B; TO 1F-15A-4-6 A |
| Enclosure Feature | SINGLE ITEM W/CARRYING CASE |
| Test Type for Which Designed | JOINT HELMET MOUNTED CUEING SYSTEM (JHMCS) |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 620900-04-00 | Vision Systems International Llc (USA) |
| 135900-20 | Rockwell Collins, Inc. Dba Rc Displays Systems (USA) |
| 135900-69 PRIMARY | Rockwell Collins, Inc. Dba Rc Displays Systems (USA) |
| 620900-04-00 PRIMARY | Collins Elbit Vision Systems, Llc Div Jhmcs (USA) |
| Reference | Meaning |
|---|---|
| 4931PL2203385 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 620900-02-01 | 5/9 Secondary reference Vision Systems International Llc |
| 4931PL0876201 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
| 10163771 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 4931-01-494-6768 is a Test Set,helmet Unit,integrated, manufactured by Rockwell Collins, Inc. Dba Rc Displays Systems, classified under FSC 4931, Fire Control Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4931-01-494-6768 has 4 manufacturer part numbers on file: 620900-04-00 (Vision Systems International Llc), 135900-20 (Rockwell Collins, Inc. Dba Rc Displays Systems), 135900-69 (Rockwell Collins, Inc. Dba Rc Displays Systems), 620900-04-00 (Collins Elbit Vision Systems, Llc Div Jhmcs).
Key specifications for 135900-69: Reference Data and Literature: SERD 5594B; TO 1F-15A-4-6 A; Special Features: CONSISTS OF CASE 135363-1, PLATE 135909-1, POWER CABLE 8975292, CABLE 620992-01-01; Enclosure Feature: SINGLE ITEM W/CARRYING CASE; Part Name Assigned by Controlling Agency: TEST SET,HELMET UNIT. 3 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.
NSN 4931-01-494-6768 has DEMIL Code D. 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.