PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ZGGH-8T-ST-001/001/L399Synchro Assembly

Moog Inc. · NSN 5990-00-869-2122 · FSC 5990 · No Item Name Available
Verified by PartsTable
NSN 5990-00-869-2122 — this item is cataloged by the U.S. Government under National Stock Number 5990-00-869-2122. Primary manufacturer part number: ZGGH-8T-ST-001/001/L399.
Features
  • Synchro Assembly — FSC 5990
  • General Characteristics Item Description: 2 TYPE 26V-08CX4 SYNCHROS; 1 GEARHEAD; GEAR RATIO 39 TO 1; ROTATION SHALL BE REVERSE DIRECTION; BODY DIM. 1.000 IN. MAX DIA; 3.820 IN. MAX LG; SHAFT DIM. 0.475 IN. MAX LG; 0.090 IN. MAX DIA; TERMINAL DIM. 12.000 IN. MIN LG; TERMINAL TYPE NO. 28 AWG; SYNCHRO BEARINGS AXIALLY SPRING LOADED V
  • Test Data Document: 70210-805191-1 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING)
  • 14 verified cross-references
  • Primary manufacturer: Moog Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Synchro Assembly, cataloged under National Stock Number 5990-00-869-2122, is classified within Federal Supply Class 5990 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Moog Inc.. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 14 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5990-00-869-2122
Primary Part NumberZGGH-8T-ST-001/001/L399
Item NameSynchro Assembly
FSC / FSG5990 / 59 — No Item Name Available
ManufacturerMoog Inc.
StatusACTIVE
General Characteristics Item Description2 TYPE 26V-08CX4 SYNCHROS; 1 GEARHEAD; GEAR RATIO 39 TO 1; ROTATION SHALL BE REVERSE DIRECTION; BODY DIM. 1.000 IN. MAX DIA; 3.820 IN. MAX LG; SHAFT DIM. 0.475 IN. MAX LG; 0.090 IN. MAX DIA; TERMINAL DIM. 12.000 IN. MIN LG; TERMINAL TYPE NO. 28 AWG; SYNCHRO BEARINGS AXIALLY SPRING LOADED V
Test Data Document70210-805191-1 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING)
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5330-00-245-8426 INTERCHANGEABLE
Seal,oil
2940-01-290-7871426927 INTERCHANGEABLE
Indicator,filter Warning,vehicul
Donaldson Company, Inc.
4330-01-331-2948428524 INTERCHANGEABLE
Filter,fluid
Rocky Mountain Hydrostatics, Llc
Cross-Reference Index
Part NumberManufacturer
008-918-1 Imc Magnetics Corp Western Div (USA)
805191-1 American Precision Industries, Inc Div Portescap Us (USA)
ZGGH-8T-ST-001/001/L399 PRIMARY Moog Inc. (USA)
PSG-008-10000-040-007 American Precision Industries, Inc Div Portescap Us (USA)
805191-1 Honeywell International, Inc Div Aerospace-Tucson (USA)
008-918-1 Kemtron Electron Products Inc (USA)
45-4294-09 Meggitt (new Hampshire), Inc (USA)
805191-1 Honeywell International Inc. Div Aerospace - Torrance (USA)
CU09613003 Kearfott Corporation Div Guidance and Navigation Division (USA)
3GGH8TST001 Moog Inc. (USA)
805191-1 Kearfott Corporation Div Guidance and Navigation Division (USA)
45-4294-09 Moog Inc. (USA)
X09876-2 Moog Inc. (USA)
4294-09 Moog Inc. (USA)
Related Parts
5330-00-245-8426INTERCHANGEABLE
SEAL,OIL
2940-01-290-7871INTERCHANGEABLE
INDICATOR,FILTER WARNING,VEHICUL
426927
4330-01-331-2948INTERCHANGEABLE
FILTER,FLUID
428524

Frequently Asked Questions

What is NSN 5990-00-869-2122?

NSN 5990-00-869-2122 is a Synchro Assembly, manufactured by Moog Inc., classified under FSC 5990 (No Item Name Available). Status: active.

What are the part numbers for NSN 5990-00-869-2122?

NSN 5990-00-869-2122 has 14 cross-referenced part numbers: 008-918-1 (Imc Magnetics Corp Western Div), 805191-1 (American Precision Industries, Inc Div Portescap Us), ZGGH-8T-ST-001/001/L399 (Moog Inc.), PSG-008-10000-040-007 (American Precision Industries, Inc Div Portescap Us), 805191-1 (Honeywell International, Inc Div Aerospace-Tucson) and 9 more.

What NSN replaces 5990-00-869-2122?

There are 3 known substitutes for 5990-00-869-2122: 5330-00-245-8426, 2940-01-290-7871, 4330-01-331-2948. Verify interchangeability with system specifications before substitution.

What are the specifications of ZGGH-8T-ST-001/001/L399?

Key specifications for ZGGH-8T-ST-001/001/L399: General Characteristics Item Description: 2 TYPE 26V-08CX4 SYNCHROS; 1 GEARHEAD; GEAR RATIO 39 TO 1; ROTATION SHALL BE REVERSE DIRECTION; BODY DIM. 1.000 IN. MAX DIA; 3.820 IN. MAX LG; SHAFT DIM. 0.475 IN. MAX LG; 0.090 IN. MAX DIA; TERMINAL DIM. 12.000 IN. MIN LG; TERMINAL TYPE NO. 28 AWG; SYNCHRO BEARINGS AXIALLY SPRING LOADED V; Test Data Document: 70210-805191-1 DRAWING (THIS IS THE BASIC GOVERNING DRAWING, SUCH AS A CONTRACTOR DRAWING, ORIGINAL EQUIPMENT MANUFACTURER DRAWING, ETC.; EXCLUDES ANY SPECIFICATION, STANDARD OR OTHER DOCUMENT THAT MAY BE REFERENCED IN A BASIC GOVERNING DRAWING). 2 total characteristics are documented in the Federal Logistics Information System.

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