Reference Data and Literature: TO 35-1-251-1 & 33D7-36-35-1
Functional Description: USED WITH THE RADAR TEST SET AN/APM-401 TO SIMULATE A RECEIVER-TRANSMITTER RT-1126/A AND TO PROVIDE TEST POINTS TO EVALUATE OUTPUT SIGNALS OF THE TEST SET DURING MAINTENANCE
Material: ALUMINUM ALLOY
Type/model Designation: DA-679-/APM-401
Identification
NSN: 4920-01-031-9274
NIIN: 010319274
FSC: 4920 — Aircraft Maintenance and Repair Shop Specialized Equipment
FSG: 49 — Maintenance and Repair Shop Equipment
General Description
The Test Set,load Box, cataloged under National Stock Number 4920-01-031-9274, is classified within Federal Supply Class 4920 (Aircraft Maintenance and Repair Shop Specialized Equipment) of the Maintenance and Repair Shop Equipment group. Government technical data includes 4 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
USED WITH THE RADAR TEST SET AN/APM-401 TO SIMULATE A RECEIVER-TRANSMITTER RT-1126/A AND TO PROVIDE TEST POINTS TO EVALUATE OUTPUT SIGNALS OF THE TEST SET DURING MAINTENANCE
Material
ALUMINUM ALLOY
Type/model Designation
DA-679-/APM-401
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
204-91816-1
3/2Design control — primary reference
U.S. Government activity
DA-679/APM-401
5/1Secondary reference
U.S. Government activity
No interchangeability data on file.
Other items in FSC 4920 — Aircraft Maintenance and Repair Shop Specialized Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4920-00-000-0190
TEST SET,FLIGHT CONTROL SYSTEM
4920-00-001-1405
4920-00-001-1405 · Item name not on file
4920-00-001-1716
4920-00-001-1716 · Item name not on file
4920-00-001-1744
4920-00-001-1744 · Item name not on file
4920-00-001-1745
4920-00-001-1745 · Item name not on file
4920-00-001-1746
4920-00-001-1746 · Item name not on file
4920-00-001-1747
4920-00-001-1747 · Item name not on file
4920-00-001-1748
4920-00-001-1748 · Item name not on file
Frequently Asked Questions
What is NSN 4920-01-031-9274?
NSN 4920-01-031-9274 is a Test Set,load Box, classified under FSC 4920, Aircraft Maintenance and Repair Shop Specialized Equipment. Status: active.
What are the specifications of 4920-01-031-9274?
Key specifications for 4920-01-031-9274: Overall Height: 9.750 INCHES NOMINAL IN; Reference Data and Literature: TO 35-1-251-1 & 33D7-36-35-1; Overall Length: 13.750 INCHES NOMINAL IN; Overall Width: 11.440 INCHES NOMINAL IN. 4 specifications are documented in the U.S. Government catalog.
Is NSN 4920-01-031-9274 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.