The Coupler,test Set, cataloged under National Stock Number 4920-01-375-4491, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 1 specification, 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 | 4920-01-375-4491 |
| Primary Part Number | 74D740170-2001 |
| Item Name | Coupler,test Set |
| FSC / FSG | 4920 / 49 — Aircraft Maintenance and Repair Shop Specialized Equipment |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Coupling Method | ELECTRONIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 74D740170-2001 PRIMARY | The Boeing Company Div Defense (USA) |
NSN 4920-01-375-4491 is a Coupler,test Set, manufactured by The Boeing Company Div Defense, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
NSN 4920-01-375-4491 has 1 manufacturer part number on file: 74D740170-2001 (The Boeing Company Div Defense).
Key specifications for 74D740170-2001: Overall Height: 12.000 INCHES NOMINAL IN; Overall Width: 14.000 INCHES NOMINAL IN; Special Features: ELECTRICAL BENCH INPUT/OUTPUT DRAWER IS CONTROLLED VIA Q-BUS INTERFACE AND PRIVIDES THE EOTS SIGNAL MEASUREMENT AND STIMULI GENERATION CAPABILITY AND ELECTRICAL BENCH TO OPTICAL BENCH INTERFACE; COMPONENTS INCLUDE CHANGE OF STATE INPUT REGISTER,CAMAC CONTROLLER,DIGITAL TO ANALOG MODULE,THREE (3) DISCRETE OUTPUT MODULES,THREE (3) DISCRETE INPUT MODULES,SIX (6) REED RELAY OUT MODULES; PROVIDES +50VDC,+28VDC,2 +15VDC,2 -15VDC,+5VDC,AND -5VDC POWER,EACH REED RELAY OUTPUT MODS PROVIDES 24 REED RELAY OUTPUT CHANNELS FOR MAXIMUM SIGNAL AMPLITUDES OF 100 V AND 0.5 AMPS; EQUIPMENT IN THE ELECTRICAL BENCH INCLUDES TOUCH SCREEN DRAWER,GAIN-PHASE ANALYZER,DIGITAL MULTIMETER,DIGITIZING OSCILLOSCOPE,VIDEO MONITOR,RUGGEDIZED MICROVAX COMPUTER,PRINTER DRAWER,ROTARY STAGE CONTROLLE R DRAWER,POWER DISTRIBUTION DRAWER,INTERCONNECTING DEVICE RECEPT DRAWER,ELECTRICAL BENCH BLOWER VDC; Coupling Method: ELECTRONIC. 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 4920-01-375-4491 has DEMIL Code B. 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.