PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

56-66-2Insulator,plate

Thermalloy Co Inc · NSN 5970-01-108-4430 · FSC 5970 · No Item Name Available
Verified by PartsTable
NSN 5970-01-108-4430 — this item is cataloged by the U.S. Government under National Stock Number 5970-01-108-4430. Primary manufacturer part number: 56-66-2.
Features
  • Insulator,plate — FSC 5970
  • Material: MICA OVERALL
  • First Hole Spacing: 0.176 INCHES NOMINAL IN
  • Fourth Hole Spacing: 0.200 INCHES NOMINAL IN
  • Style Designator: FLAT, DIAMOND
  • Fifth Hole Spacing: 0.100 INCHES NOMINAL IN
  • First Hole Diameter: 0.140 INCHES NOMINAL IN
  • First End Radius: 0.176 INCHES NOMINAL IN
Applications
  • Applications requiring Mica Overall construction
General Description

The Insulator,plate, cataloged under National Stock Number 5970-01-108-4430, is classified within Federal Supply Class 5970 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Thermalloy Co Inc. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference 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
NSN5970-01-108-4430
Primary Part Number56-66-2
Item NameInsulator,plate
FSC / FSG5970 / 59 — No Item Name Available
ManufacturerThermalloy Co Inc
StatusACTIVE
MaterialMICA OVERALL
First Hole Spacing0.176 INCHES NOMINAL IN
Fourth Hole Spacing0.200 INCHES NOMINAL IN
Style DesignatorFLAT, DIAMOND
Fifth Hole Spacing0.100 INCHES NOMINAL IN
First Hole Diameter0.140 INCHES NOMINAL IN
First End Radius0.176 INCHES NOMINAL IN
Second Hole Spacing0.380 INCHES NOMINAL IN
Third Hole Spacing0.960 INCHES NOMINAL IN
First Side Radius0.381 INCHES NOMINAL IN
Second Hole Diameter0.062 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
6250-00-188-5707566-62 INTERCHANGEABLE
Lampholder
Technipower Llc Dba Unipower
3110-00-593-428956662 INTERCHANGEABLE
Cup,tapered Roller Bearing
The Timken Corporation
4730-01-195-40415274-1 INTERCHANGEABLE
Adapter
Pdi Ground Support Systems, Inc.
Cross-Reference Index
Part NumberManufacturer
56-66-2 Thermalloy Co Inc (USA)
Related Parts
6250-00-188-5707INTERCHANGEABLE
LAMPHOLDER
566-62
3110-00-593-4289INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
56662
4730-01-195-4041INTERCHANGEABLE
ADAPTER
5274-1

Frequently Asked Questions

What is NSN 5970-01-108-4430?

NSN 5970-01-108-4430 is a Insulator,plate, manufactured by Thermalloy Co Inc, classified under FSC 5970 (No Item Name Available). Status: active.

What are the part numbers for NSN 5970-01-108-4430?

NSN 5970-01-108-4430 has 1 cross-referenced part number: 56-66-2 (Thermalloy Co Inc).

What NSN replaces 5970-01-108-4430?

There are 3 known substitutes for 5970-01-108-4430: 6250-00-188-5707, 3110-00-593-4289, 4730-01-195-4041. Verify interchangeability with system specifications before substitution.

What are the specifications of 56-66-2?

Key specifications for 56-66-2: Overall Length: 1.312 INCHES NOMINAL IN; Material: MICA OVERALL; First Hole Spacing: 0.176 INCHES NOMINAL IN; Overall Width: 0.762 INCHES NOMINAL IN. 14 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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