PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21966Cup-Field

Prestolite Electric Inc · NSN 6685-00-449-2572 · FSC 6685 · No Item Name Available
Verified by PartsTable
NSN 6685-00-449-2572 — this item is cataloged by the U.S. Government under National Stock Number 6685-00-449-2572. Primary manufacturer part number: 21966.
Features
  • Cup-Field — FSC 6685
  • 2 verified cross-references
  • Primary manufacturer: Prestolite Electric Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Cup-Field, cataloged under National Stock Number 6685-00-449-2572, is classified within Federal Supply Class 6685 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Prestolite Electric Inc. 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: Cancelled.

Catalog Facts
Item NameCup-Field
FSC / FSG6685 — No Item Name Available (FSG 66)
ManufacturersPrestolite Electric Inc (CAGE 68505); Prestolite Electric Inc (CAGE 24975)
Technical Specifications
ParameterValue
NSN6685-00-449-2572
Primary Part Number21966
Item NameCup-Field
FSC / FSG6685 / 66 — No Item Name Available
ManufacturerPrestolite Electric Inc
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
5310-00-020-035921NE108 INTERCHANGEABLE
Nut,self-Locking,hexagon
Esna, Llc
6685-01-501-6699ICSS-18-G-6 INTERCHANGEABLE
Thermocouple,immersion
Omega Engineering, Inc.
5315-01-691-469721966 INTERCHANGEABLE
Pin,straight,headed
Tulsa Winch, Inc.
Cross-Reference Index
Part NumberManufacturer
21966 Prestolite Electric Inc (USA)
21966 PRIMARY Prestolite Electric Inc (USA)
Related Parts
5310-00-020-0359INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
21NE108
6685-01-501-6699INTERCHANGEABLE
THERMOCOUPLE,IMMERSION
ICSS-18-G-6
5315-01-691-4697INTERCHANGEABLE
PIN,STRAIGHT,HEADED
21966

Frequently Asked Questions

What is NSN 6685-00-449-2572?

NSN 6685-00-449-2572 is a Cup-Field, manufactured by Prestolite Electric Inc, classified under FSC 6685 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6685-00-449-2572?

NSN 6685-00-449-2572 has 2 cross-referenced part numbers: 21966 (Prestolite Electric Inc), 21966 (Prestolite Electric Inc).

What NSN replaces 6685-00-449-2572?

There are 3 known substitutes for 6685-00-449-2572: 5310-00-020-0359, 6685-01-501-6699, 5315-01-691-4697. Verify interchangeability with system specifications before substitution.

Is NSN 6685-00-449-2572 still in active supply?

NSN 6685-00-449-2572 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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