PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4404-2Plate,adjusting,sea

Lockheed Martin Corp · NSN 1680-00-858-0421 · FSC 1680 · No Item Name Available
Verified by PartsTable
NSN 1680-00-858-0421 — this item is cataloged by the U.S. Government under National Stock Number 1680-00-858-0421. Primary manufacturer part number: 4404-2.
Features
  • Plate,adjusting,sea — FSC 1680
  • 1 verified cross-reference
  • Primary manufacturer: Lockheed Martin Corp
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Plate,adjusting,sea, cataloged under National Stock Number 1680-00-858-0421, is classified within Federal Supply Class 1680 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is Lockheed Martin Corp. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NamePlate,adjusting,sea
FSC / FSG1680 — No Item Name Available (FSG 16)
ManufacturersLockheed Martin Corp (CAGE 98897)
Technical Specifications
ParameterValue
NSN1680-00-858-0421
Primary Part Number4404-2
Item NamePlate,adjusting,sea
FSC / FSG1680 / 16 — No Item Name Available
ManufacturerLockheed Martin Corp
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
6685-00-067-5259133244 INTERCHANGEABLE
Gage,pressure,dial Indicating
Ametek, Inc. Div Aerospace & Defense
6850-01-120-0530 INTERCHANGEABLE
Toner,direct Electrostatic Proce
4820-01-217-253544042 INTERCHANGEABLE
Disk,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
5935-01-219-603022-27-2021 INTERCHANGEABLE
Connector,receptacle,electrical
Molex, Llc
Cross-Reference Index
Part NumberManufacturer
4404-2 PRIMARY Lockheed Martin Corp (USA)
Related Parts
6685-00-067-5259INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING
133244
6850-01-120-0530INTERCHANGEABLE
TONER,DIRECT ELECTROSTATIC PROCE
4820-01-217-2535INTERCHANGEABLE
DISK,VALVE
44042
5935-01-219-6030INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
22-27-2021

Frequently Asked Questions

What is NSN 1680-00-858-0421?

NSN 1680-00-858-0421 is a Plate,adjusting,sea, manufactured by Lockheed Martin Corp, classified under FSC 1680 (No Item Name Available). Status: active.

What are the part numbers for NSN 1680-00-858-0421?

NSN 1680-00-858-0421 has 1 cross-referenced part number: 4404-2 (Lockheed Martin Corp).

What NSN replaces 1680-00-858-0421?

There are 4 known substitutes for 1680-00-858-0421: 6685-00-067-5259, 6850-01-120-0530, 4820-01-217-2535 and 1 more. Verify interchangeability with system specifications before substitution.

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