PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2066-4Insulation Sleeving,electrical

Telephone Company of America Incorporated · NSN 5970-00-538-0186 · FSC 5970 · No Item Name Available
Verified by PartsTable
NSN 5970-00-538-0186 — this item is cataloged by the U.S. Government under National Stock Number 5970-00-538-0186. Primary manufacturer part number: 2066-4.
Features
  • Insulation Sleeving,electrical — FSC 5970
  • Dielectric Material Voltage Rating Per Unit Thickness: 520.0 VOLTS PER MIL /0.001 INCH/ IN
  • Departure From Cited Document: AS MOD BY COLOR
  • Minimum Tensile Strength: 1450 POUNDS PER SQUARE INCH LBS
  • Nondefinitive Spec/std Data: 1 CATEGORY AND I CLASS AND U FORM AND B GRADE AND 5/8 IN. SIZE AND UA SUBFORM AND F TYPE IN
  • Style Designator: NONSHRINKABLE
  • Flexibility: FLEXIBLE
  • Environmental Protection: CRACK RESISTANT
Applications
  • Applications requiring Plastic Polyvinyl Chloride (pvc) construction
General Description

The Insulation Sleeving,electrical, cataloged under National Stock Number 5970-00-538-0186, 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 Telephone Company of America Incorporated. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5970-00-538-0186
Primary Part Number2066-4
Item NameInsulation Sleeving,electrical
FSC / FSG5970 / 59 — No Item Name Available
ManufacturerTelephone Company of America Incorporated
StatusACTIVE
Dielectric Material Voltage Rating Per Unit Thickness520.0 VOLTS PER MIL /0.001 INCH/ IN
Departure From Cited DocumentAS MOD BY COLOR
Minimum Tensile Strength1450 POUNDS PER SQUARE INCH LBS
Nondefinitive Spec/std Data1 CATEGORY AND I CLASS AND U FORM AND B GRADE AND 5/8 IN. SIZE AND UA SUBFORM AND F TYPE IN
Style DesignatorNONSHRINKABLE
FlexibilityFLEXIBLE
Environmental ProtectionCRACK RESISTANT
Temp Rating-46.0 CELSIUS AND 70.0 CELSIUS DEGC
ColorBLACK
MaterialPLASTIC POLYVINYL CHLORIDE (PVC)
Wall Thickness0.025 INCHES MINIMUM AND 0.035 INCHES MAXIMUM IN
Reliability IndicatorNOT ESTABLISHED
Inside Diameter0.625 INCHES MINIMUM AND 0.655 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5310-00-151-893820664 INTERCHANGEABLE
Nut,special
Crane Pumps & Systems Pft Corp Div Crane Pumps & System Pft Corp.
5133-00-189-9293 INTERCHANGEABLE
Drill,twist
5330-00-270-84682R718-121 INTERCHANGEABLE
Paper,gasket
Dresser, Inc. Dba Dresser Roots Blowers & Compressors Div Dresser Roots
5841-00-338-848020664 INTERCHANGEABLE
Bracket Assy
Raytheon Company Dba Raytheon
5330-00-634-82656405258 FIND 52 INTERCHANGEABLE
Paper,gasket
Naval Sea Systems Command
5340-01-358-369120664 INTERCHANGEABLE
Bracket,mounting
Aerocontrolex Group, Inc. Div Talley Actuators
5310-01-707-716320-664 INTERCHANGEABLE
Washer,flat
Rix Industries
Cross-Reference Index
Part NumberManufacturer
ITCO 919 Insultab Inc Div Pexco Athol (USA)
HYFLEX TRANSFLEX Minnesota Mining and Mfg Co 3m Company (USA)
HYFLEX TRANSFLEX 3m Co Admininistrative Electronic & Communications (USA)
ASTRA 701 Essex Group Inc Suflex/iwp Div (USA)
MIL-I-631 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
NATVAR 361 High Voltage Engineering Corp Natvar Co Div (USA)
2066-4 PRIMARY Telephone Company of America Incorporated (USA)
SYNTHOLVAR Varflex Corporation Dba Varflex Corp (USA)
GLITEX 120 Nalge Co Div of Sybron Corp (USA)
Related Parts
5310-00-151-8938INTERCHANGEABLE
NUT,SPECIAL
20664
5133-00-189-9293INTERCHANGEABLE
DRILL,TWIST
5330-00-270-8468INTERCHANGEABLE
PAPER,GASKET
2R718-121
5841-00-338-8480INTERCHANGEABLE
BRACKET ASSY
20664
5330-00-634-8265INTERCHANGEABLE
PAPER,GASKET
6405258 FIND 52
5340-01-358-3691INTERCHANGEABLE
BRACKET,MOUNTING
20664
5310-01-707-7163INTERCHANGEABLE
WASHER,FLAT
20-664

Frequently Asked Questions

What is NSN 5970-00-538-0186?

NSN 5970-00-538-0186 is a Insulation Sleeving,electrical, manufactured by Telephone Company of America Incorporated, classified under FSC 5970 (No Item Name Available). Status: active.

What are the part numbers for NSN 5970-00-538-0186?

NSN 5970-00-538-0186 has 9 cross-referenced part numbers: ITCO 919 (Insultab Inc Div Pexco Athol), HYFLEX TRANSFLEX (Minnesota Mining and Mfg Co 3m Company), HYFLEX TRANSFLEX (3m Co Admininistrative Electronic & Communications), ASTRA 701 (Essex Group Inc Suflex/iwp Div), MIL-I-631 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 4 more.

What NSN replaces 5970-00-538-0186?

There are 7 known substitutes for 5970-00-538-0186: 5310-00-151-8938, 5133-00-189-9293, 5330-00-270-8468 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2066-4?

Key specifications for 2066-4: Dielectric Material Voltage Rating Per Unit Thickness: 520.0 VOLTS PER MIL /0.001 INCH/ IN; Departure From Cited Document: AS MOD BY COLOR; Minimum Tensile Strength: 1450 POUNDS PER SQUARE INCH LBS; Nondefinitive Spec/std Data: 1 CATEGORY AND I CLASS AND U FORM AND B GRADE AND 5/8 IN. SIZE AND UA SUBFORM AND F TYPE IN. 13 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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