PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20121Test Program Set

Textron Systems Corporation Dba Textron Systems Corp · NSN 4920-01-299-0279 · FSC 4920 · No Item Name Available
Verified by PartsTable
NSN 4920-01-299-0279 — this item is cataloged by the U.S. Government under National Stock Number 4920-01-299-0279. Primary manufacturer part number: 20121.
Features
  • Test Program Set — FSC 4920
  • 1 verified cross-reference
  • Primary manufacturer: Textron Systems Corporation Dba Textron Systems Corp
Applications
  • Maintenance depot operations
  • Field repair and servicing
  • Vehicle maintenance facilities
General Description

The Test Program Set, cataloged under National Stock Number 4920-01-299-0279, is classified within Federal Supply Class 4920 (No Item Name Available) of the Maintenance and Repair Shop Equipment group. The primary manufacturer of record is Textron Systems Corporation Dba Textron Systems Corp. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameTest Program Set
FSC / FSG4920 — No Item Name Available (FSG 49)
ManufacturersTextron Systems Corporation Dba Textron Systems Corp (CAGE 97384)
Technical Specifications
ParameterValue
NSN4920-01-299-0279
Primary Part Number20121
Item NameTest Program Set
FSC / FSG4920 / 49 — No Item Name Available
ManufacturerTextron Systems Corporation Dba Textron Systems Corp
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5305-00-026-257720-121 INTERCHANGEABLE
Screw
Motorola Automotive Electronics
6220-00-110-892120121 INTERCHANGEABLE
Main Casting,retractable Landing
Grimes Aerospace Company
5133-00-228-1370 INTERCHANGEABLE
Drill,twist
5940-00-258-21207612531 INTERCHANGEABLE
Terminal,lug
Us Army Aviation and Missile Command
3020-00-402-8238 INTERCHANGEABLE
Pulley,groove
5940-00-680-9727 INTERCHANGEABLE
Terminal,feedthru
5910-00-832-981420121 INTERCHANGEABLE
Capacitor Assembly
Clantech, Inc.
3040-01-101-983170400-01250-043 INTERCHANGEABLE
Connecting Link,rigid
Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp
4130-01-140-176720121 INTERCHANGEABLE
Coil,condenser
Frick Co
5330-01-176-798028094 INTERCHANGEABLE
Gasket
Alliance Laundry Systems Llc
Cross-Reference Index
Part NumberManufacturer
20121 PRIMARY Textron Systems Corporation Dba Textron Systems Corp (USA)
Related Parts
5305-00-026-2577INTERCHANGEABLE
SCREW
20-121
6220-00-110-8921INTERCHANGEABLE
MAIN CASTING,RETRACTABLE LANDING
20121
5133-00-228-1370INTERCHANGEABLE
DRILL,TWIST
5940-00-258-2120INTERCHANGEABLE
TERMINAL,LUG
7612531
3020-00-402-8238INTERCHANGEABLE
PULLEY,GROOVE
5940-00-680-9727INTERCHANGEABLE
TERMINAL,FEEDTHRU
5910-00-832-9814INTERCHANGEABLE
CAPACITOR ASSEMBLY
20121
3040-01-101-9831INTERCHANGEABLE
CONNECTING LINK,RIGID
70400-01250-043
4130-01-140-1767INTERCHANGEABLE
COIL,CONDENSER
20121
5330-01-176-7980INTERCHANGEABLE
GASKET
28094
3040-01-195-4050INTERCHANGEABLE
SHOE,CAM ROLLER
20121
7930-01-412-1033INTERCHANGEABLE
RUG AND ROOM FRESHENER
7100051405

Frequently Asked Questions

What is NSN 4920-01-299-0279?

NSN 4920-01-299-0279 is a Test Program Set, manufactured by Textron Systems Corporation Dba Textron Systems Corp, classified under FSC 4920 (No Item Name Available). Status: active.

What are the part numbers for NSN 4920-01-299-0279?

NSN 4920-01-299-0279 has 1 cross-referenced part number: 20121 (Textron Systems Corporation Dba Textron Systems Corp).

What NSN replaces 4920-01-299-0279?

There are 12 known substitutes for 4920-01-299-0279: 5305-00-026-2577, 6220-00-110-8921, 5133-00-228-1370 and 9 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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