PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

M81786/3-7Insulation Sleeving,electrical

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5970-01-373-1233 · FSC 5970 · No Item Name Available
Verified by PartsTable
NSN 5970-01-373-1233 — this item is cataloged by the U.S. Government under National Stock Number 5970-01-373-1233. Primary manufacturer part number: M81786/3-7.
Features
  • Insulation Sleeving,electrical — FSC 5970
  • Reliability Indicator: NOT ESTABLISHED
  • Color: BLACK
  • Recovered Wall Thickness: 0.028 INCHES MAXIMUM IN
  • Expanded Inside Diameter: 0.375 INCHES MINIMUM IN
  • Temp Rating: -55.0 CELSIUS AND 135.0 CELSIUS DEGC
  • Minimum Tensile Strength: 1500 POUNDS PER SQUARE INCH LBS
  • Environmental Protection: CORROSION RESISTANT AND FLAME RESISTANT AND MILDEW RESISTANT AND WATER RESISTANT
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Insulation Sleeving,electrical, cataloged under National Stock Number 5970-01-373-1233, 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 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 12 verified specifications, 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
NSN5970-01-373-1233
Primary Part NumberM81786/3-7
Item NameInsulation Sleeving,electrical
FSC / FSG5970 / 59 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
Reliability IndicatorNOT ESTABLISHED
ColorBLACK
Recovered Wall Thickness0.028 INCHES MAXIMUM IN
Expanded Inside Diameter0.375 INCHES MINIMUM IN
Temp Rating-55.0 CELSIUS AND 135.0 CELSIUS DEGC
Minimum Tensile Strength1500 POUNDS PER SQUARE INCH LBS
Environmental ProtectionCORROSION RESISTANT AND FLAME RESISTANT AND MILDEW RESISTANT AND WATER RESISTANT
Heat Shrinkage Rating in Percent50.0
FlexibilityFLEXIBLE
Recovered Inside Diameter0.187 INCHES MAXIMUM IN
Dielectric Material Voltage Rating Per Unit Thickness500.0 VOLTS PER MIL /0.001 INCH/ IN
Style DesignatorSHRINKABLE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5970-00-954-1624M23053/5-107 INTERCHANGEABLE
Insulation Sleeving,electrical
Sae International Dba Sae International
5970-01-373-1232 INTERCHANGEABLE
Insulation Sleeving,electrical
5970-01-373-1234 INTERCHANGEABLE
Insulation Sleeving,electrical
Cross-Reference Index
Part NumberManufacturer
M81786/3-7 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-K-81786/3 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5970-00-954-1624INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
M23053/5-107
5970-01-373-1232INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL
5970-01-373-1234INTERCHANGEABLE
INSULATION SLEEVING,ELECTRICAL

Frequently Asked Questions

What is NSN 5970-01-373-1233?

NSN 5970-01-373-1233 is a Insulation Sleeving,electrical, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5970 (No Item Name Available). Status: active.

What are the part numbers for NSN 5970-01-373-1233?

NSN 5970-01-373-1233 has 2 cross-referenced part numbers: M81786/3-7 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-K-81786/3 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5970-01-373-1233?

There are 3 known substitutes for 5970-01-373-1233: 5970-00-954-1624, 5970-01-373-1232, 5970-01-373-1234. Verify interchangeability with system specifications before substitution.

What are the specifications of M81786/3-7?

Key specifications for M81786/3-7: Reliability Indicator: NOT ESTABLISHED; Color: BLACK; Recovered Wall Thickness: 0.028 INCHES MAXIMUM IN; Expanded Inside Diameter: 0.375 INCHES MINIMUM IN. 12 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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