PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

643193-23Top Assembly,toilet

Lockheed Martin Corp · NSN 1680-00-019-1537 · FSC 1680 · No Item Name Available
Verified by PartsTable
NSN 1680-00-019-1537 — this item is cataloged by the U.S. Government under National Stock Number 1680-00-019-1537. Primary manufacturer part number: 643193-23.
Features
  • Top Assembly,toilet — FSC 1680
  • 2 verified cross-references
  • Primary manufacturer: Lockheed Martin Corp
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Top Assembly,toilet, cataloged under National Stock Number 1680-00-019-1537, 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 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameTop Assembly,toilet
FSC / FSG1680 — No Item Name Available (FSG 16)
ManufacturersLockheed Martin Corp (CAGE 98897); Custom Craft Products Inc (CAGE 92541)
Technical Specifications
ParameterValue
NSN1680-00-019-1537
Primary Part Number643193-23
Item NameTop Assembly,toilet
FSC / FSG1680 / 16 — No Item Name Available
ManufacturerLockheed Martin Corp
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
4940-00-141-802724-004 INTERCHANGEABLE
Resurfacer,commutator
Ideal Industries, Inc.
5120-00-197-9490 INTERCHANGEABLE
Punch,center,solid
4820-00-520-814323850PC26 INTERCHANGEABLE
Vent Assy,air
L3harris Technologies, Inc. Div Space and Airborne Systems
3120-01-088-7974CB27374-001 INTERCHANGEABLE
Bushing,sleeve
Moog Inc. Dba Ampac-Isp Corp
7125-01-601-4150 INTERCHANGEABLE
Cabinet,storage
Cross-Reference Index
Part NumberManufacturer
643193-23 PRIMARY Lockheed Martin Corp (USA)
2400-4 Custom Craft Products Inc (USA)
Related Parts
4940-00-141-8027INTERCHANGEABLE
RESURFACER,COMMUTATOR
24-004
5120-00-197-9490INTERCHANGEABLE
PUNCH,CENTER,SOLID
4820-00-520-8143INTERCHANGEABLE
VENT ASSY,AIR
23850PC26
3120-01-088-7974INTERCHANGEABLE
BUSHING,SLEEVE
CB27374-001
7125-01-601-4150INTERCHANGEABLE
CABINET,STORAGE

Frequently Asked Questions

What is NSN 1680-00-019-1537?

NSN 1680-00-019-1537 is a Top Assembly,toilet, manufactured by Lockheed Martin Corp, classified under FSC 1680 (No Item Name Available). Status: active.

What are the part numbers for NSN 1680-00-019-1537?

NSN 1680-00-019-1537 has 2 cross-referenced part numbers: 643193-23 (Lockheed Martin Corp), 2400-4 (Custom Craft Products Inc).

What NSN replaces 1680-00-019-1537?

There are 5 known substitutes for 1680-00-019-1537: 4940-00-141-8027, 5120-00-197-9490, 4820-00-520-8143 and 2 more. Verify interchangeability with system specifications before substitution.

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