PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

525-31Disk,sight

Ldi Industries, Inc. Dba Ldi Industries Inc · NSN 6680-01-168-1593 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-01-168-1593 — this item is cataloged by the U.S. Government under National Stock Number 6680-01-168-1593. Primary manufacturer part number: 525-31.
Features
  • Disk,sight — FSC 6680
  • General Characteristics Item Description: 1.812 IN. DIA; TEMPERED GLASS IN
  • 2 verified cross-references
  • Primary manufacturer: Ldi Industries, Inc. Dba Ldi Industries Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Disk,sight, cataloged under National Stock Number 6680-01-168-1593, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Ldi Industries, Inc. Dba Ldi Industries Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, 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
NSN6680-01-168-1593
Primary Part Number525-31
Item NameDisk,sight
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerLdi Industries, Inc. Dba Ldi Industries Inc
StatusACTIVE
General Characteristics Item Description1.812 IN. DIA; TEMPERED GLASS IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5998-00-006-05945253-1 INTERCHANGEABLE
Circuit Card Assembly
General Microwave Corporation Div Kratos Microwave Electronics
3030-01-386-1676C000184 INTERCHANGEABLE
Belting,flat
Federal Equipment Co
5305-01-437-5808 INTERCHANGEABLE
Screw,cap,socket Head
Cross-Reference Index
Part NumberManufacturer
525-31 PRIMARY Ldi Industries, Inc. Dba Ldi Industries Inc (USA)
525 Ldi Industries, Inc. Dba Ldi Industries Inc (USA)
Related Parts
5998-00-006-0594INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
5253-1
3030-01-386-1676INTERCHANGEABLE
BELTING,FLAT
C000184
5305-01-437-5808INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD

Frequently Asked Questions

What is NSN 6680-01-168-1593?

NSN 6680-01-168-1593 is a Disk,sight, manufactured by Ldi Industries, Inc. Dba Ldi Industries Inc, classified under FSC 6680 (No Item Name Available). Status: active.

What are the part numbers for NSN 6680-01-168-1593?

NSN 6680-01-168-1593 has 2 cross-referenced part numbers: 525-31 (Ldi Industries, Inc. Dba Ldi Industries Inc), 525 (Ldi Industries, Inc. Dba Ldi Industries Inc).

What NSN replaces 6680-01-168-1593?

There are 3 known substitutes for 6680-01-168-1593: 5998-00-006-0594, 3030-01-386-1676, 5305-01-437-5808. Verify interchangeability with system specifications before substitution.

What are the specifications of 525-31?

Key specifications for 525-31: General Characteristics Item Description: 1.812 IN. DIA; TEMPERED GLASS IN; End Item Identification: FLOW SIGHT METER. 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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