PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

300813-1Block Assy

Moog Inc. · NSN 5977-01-214-1125 · FSC 5977 · No Item Name Available
Verified by PartsTable
NSN 5977-01-214-1125 — this item is cataloged by the U.S. Government under National Stock Number 5977-01-214-1125. Primary manufacturer part number: 300813-1.
Features
  • Block Assy — FSC 5977
  • 2 verified cross-references
  • Primary manufacturer: Moog Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Block Assy, cataloged under National Stock Number 5977-01-214-1125, is classified within Federal Supply Class 5977 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Moog Inc.. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameBlock Assy
FSC / FSG5977 — No Item Name Available (FSG 59)
ManufacturersMoog Inc. (CAGE 99932); Raytheon Company Div Rmd Strategic (CAGE 05869)
Technical Specifications
ParameterValue
NSN5977-01-214-1125
Primary Part Number300813-1
Item NameBlock Assy
FSC / FSG5977 / 59 — No Item Name Available
ManufacturerMoog Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5950-00-113-3603050-002134 INTERCHANGEABLE
Transformer,radio Frequency
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
5120-00-364-2858 INTERCHANGEABLE
Tool,bit
4310-00-436-30441219-415 INTERCHANGEABLE
Fitting,discharge
Koehring Cranes, Inc Dba Terex Cranes Div Waverly Operations
5961-00-615-0094 INTERCHANGEABLE
Semiconductor Device,diode
5985-01-395-624650213-4 INTERCHANGEABLE
Antenna Subassembly
Fisica Applied Technologies, Inc. Div Randtron Antenna Systems
6220-01-417-3329502134 INTERCHANGEABLE
Panel,indicating,light Transmitt
Airco Industries, Inc. Dba Photo Etch Div Photo Etch
Cross-Reference Index
Part NumberManufacturer
300813-1 PRIMARY Moog Inc. (USA)
5021-34 Raytheon Company Div Rmd Strategic (USA)
Related Parts
5950-00-113-3603INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
050-002134
5120-00-364-2858INTERCHANGEABLE
TOOL,BIT
4310-00-436-3044INTERCHANGEABLE
FITTING,DISCHARGE
1219-415
5961-00-615-0094INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5985-01-395-6246INTERCHANGEABLE
ANTENNA SUBASSEMBLY
50213-4
6220-01-417-3329INTERCHANGEABLE
PANEL,INDICATING,LIGHT TRANSMITT
502134

Frequently Asked Questions

What is NSN 5977-01-214-1125?

NSN 5977-01-214-1125 is a Block Assy, manufactured by Moog Inc., classified under FSC 5977 (No Item Name Available). Status: active.

What are the part numbers for NSN 5977-01-214-1125?

NSN 5977-01-214-1125 has 2 cross-referenced part numbers: 300813-1 (Moog Inc.), 5021-34 (Raytheon Company Div Rmd Strategic).

What NSN replaces 5977-01-214-1125?

There are 6 known substitutes for 5977-01-214-1125: 5950-00-113-3603, 5120-00-364-2858, 4310-00-436-3044 and 3 more. Verify interchangeability with system specifications before substitution.

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