PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

40-66Lead,test

Kaypro Corp · NSN 6625-01-037-6661 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-01-037-6661 — this item is cataloged by the U.S. Government under National Stock Number 6625-01-037-6661. Primary manufacturer part number: 40-66.
Features
  • Lead,test — FSC 6625
  • FSC Application Data: ELEC,ELECT. PROPERTIES MEASURING AND TEST INSTRUMENTS
  • Material: PLASTIC FIRST POSITION PRIMARY INSULATION SINGLE CONDUCTOR
  • Material: COPPER CORE CONDUCTOR ALL CONDUCTORS
  • Color: BLUE FIRST POSITION COVER SINGLE CONDUCTOR
  • Conductor Form: STRANDED SINGLE CONDUCTOR
  • Cross-Sectional Shape Style: ROUND
  • Cross Section Outside Diameter: 0.086 INCHES NOMINAL IN
Applications
  • Applications requiring Plastic First Position Primary Insulation Single Conductor construction
General Description

The Lead,test, cataloged under National Stock Number 6625-01-037-6661, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Kaypro Corp. Government technical data includes 14 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-01-037-6661
Primary Part Number40-66
Item NameLead,test
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerKaypro Corp
StatusACTIVE
FSC Application DataELEC,ELECT. PROPERTIES MEASURING AND TEST INSTRUMENTS
MaterialPLASTIC FIRST POSITION PRIMARY INSULATION SINGLE CONDUCTOR
MaterialCOPPER CORE CONDUCTOR ALL CONDUCTORS
ColorBLUE FIRST POSITION COVER SINGLE CONDUCTOR
Conductor FormSTRANDED SINGLE CONDUCTOR
Cross-Sectional Shape StyleROUND
Cross Section Outside Diameter0.086 INCHES NOMINAL IN
FSC Application DataELEC,ELECT. PROPERTIES MEASURING AND TEST INSTRUMENTS
MaterialPLASTIC FIRST POSITION PRIMARY INSULATION SINGLE CONDUCTOR
MaterialCOPPER CORE CONDUCTOR ALL CONDUCTORS
ColorBLUE FIRST POSITION COVER SINGLE CONDUCTOR
Conductor FormSTRANDED SINGLE CONDUCTOR
Cross-Sectional Shape StyleROUND
Cross Section Outside Diameter0.086 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeN
Unit of IssueEA
SMR CodeJZ
Weight0.3300 lbs
Cube0.0200 cu ft
Verified Substitutes 12
5910-00-195-3712456-6 INTERCHANGEABLE
Capacitor,fixed,mica Dielectric
Cornell-Dubilier Marketing Inc
5970-00-198-3911H030-301-3001 INTERCHANGEABLE
Insulator,plate
L3harris Interstate Electronics Corporation
5330-00-301-65174066 INTERCHANGEABLE
Gasket
Saylor-Beall Manufacturing Company
5360-00-349-81414066 INTERCHANGEABLE
Spring,hammer
Wakmann Watch Company Inc
5330-00-475-0589023860 INTERCHANGEABLE
Gasket
Parker-Hannifin Corporation Dba Pneutronics Div Composite Sealing Systems Division
6750-00-614-9856 INTERCHANGEABLE
Paper,photographic
5120-00-690-518021C865G001 INTERCHANGEABLE
Puller,mechanical
General Electric Company
2805-00-793-2351140NF INTERCHANGEABLE
Piston,internal Combustion Engin
Trw Inc Trw Steering and Suspension Div
5950-00-863-2102 INTERCHANGEABLE
Reactor
5999-01-075-1140L02687 INTERCHANGEABLE
Heat Sink,electrical-Electronic
Dla Land and Maritime Dba Engineering and Technical Support Div Document Standardization Division (vendor Item Drawings)
Cross-Reference Index
Part NumberManufacturer
40-66 Kaypro Corp (USA)
Related Parts
5910-00-195-3712INTERCHANGEABLE
CAPACITOR,FIXED,MICA DIELECTRIC
456-6
5970-00-198-3911INTERCHANGEABLE
INSULATOR,PLATE
H030-301-3001
5330-00-301-6517INTERCHANGEABLE
GASKET
4066
5360-00-349-8141INTERCHANGEABLE
SPRING,HAMMER
4066
5330-00-475-0589INTERCHANGEABLE
GASKET
023860
6750-00-614-9856INTERCHANGEABLE
PAPER,PHOTOGRAPHIC
5120-00-690-5180INTERCHANGEABLE
PULLER,MECHANICAL
21C865G001
2805-00-793-2351INTERCHANGEABLE
PISTON,INTERNAL COMBUSTION ENGIN
140NF
5950-00-863-2102INTERCHANGEABLE
REACTOR
5999-01-075-1140INTERCHANGEABLE
HEAT SINK,ELECTRICAL-ELECTRONIC
L02687
5445-01-529-4108INTERCHANGEABLE
TOWER
4066
4130-01-573-4727INTERCHANGEABLE
COMPRESSOR,REFRIGERATION
4066

Frequently Asked Questions

What is NSN 6625-01-037-6661?

NSN 6625-01-037-6661 is a Lead,test, manufactured by Kaypro Corp, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-01-037-6661?

NSN 6625-01-037-6661 has 1 cross-referenced part number: 40-66 (Kaypro Corp).

What NSN replaces 6625-01-037-6661?

There are 12 known substitutes for 6625-01-037-6661: 5910-00-195-3712, 5970-00-198-3911, 5330-00-301-6517 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 40-66?

Key specifications for 40-66: FSC Application Data: ELEC,ELECT. PROPERTIES MEASURING AND TEST INSTRUMENTS; Material: PLASTIC FIRST POSITION PRIMARY INSULATION SINGLE CONDUCTOR; Material: COPPER CORE CONDUCTOR ALL CONDUCTORS; Color: BLUE FIRST POSITION COVER SINGLE CONDUCTOR. 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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