PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

HI-THERM BC-340Insulating Varnish,electrical

John C. Dolph Company · NSN 5970-01-012-1057 · FSC 5970 · No Item Name Available
Verified by PartsTable
NSN 5970-01-012-1057 — this item is cataloged by the U.S. Government under National Stock Number 5970-01-012-1057. Primary manufacturer part number: HI-THERM BC-340.
Features
  • Insulating Varnish,electrical — FSC 5970
  • Dry Dielectric Material Voltage Rating in Volts Per Mil Thickness: 1900.0
  • Unit Package Type: CAN
  • Environmental Protection: ACID RESISTANT AND GREASE AND LUBRICATING OIL AND MOISTURE RESISTANT AND SALT WATER RESISTANT
  • Unit Package Quantity: 1
  • Nondefinitive Spec/std Data: 155 CLASS AND M TYPE
  • Drying Method: BAKED
  • Color: CLEAR
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Insulating Varnish,electrical, cataloged under National Stock Number 5970-01-012-1057, 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 John C. Dolph Company. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 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
NSN5970-01-012-1057
Primary Part NumberHI-THERM BC-340
Item NameInsulating Varnish,electrical
FSC / FSG5970 / 59 — No Item Name Available
ManufacturerJohn C. Dolph Company
StatusACTIVE
Dry Dielectric Material Voltage Rating in Volts Per Mil Thickness1900.0
Unit Package TypeCAN
Environmental ProtectionACID RESISTANT AND GREASE AND LUBRICATING OIL AND MOISTURE RESISTANT AND SALT WATER RESISTANT
Unit Package Quantity1
Nondefinitive Spec/std Data155 CLASS AND M TYPE
Drying MethodBAKED
ColorCLEAR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
5970-00-166-1682 INTERCHANGEABLE
Insulating Varnish,electrical
5970-00-548-7070DC-997 INTERCHANGEABLE
Insulating Varnish,electrical
Dow Silicones Corporation
5970-00-548-7211 INTERCHANGEABLE
Insulating Varnish,electrical
5970-00-931-2413 INTERCHANGEABLE
Insulating Varnish,electrical
5970-00-979-9257 INTERCHANGEABLE
Insulating Varnish,electrical
5970-01-282-5215 INTERCHANGEABLE
Insulating Varnish,electrical
5970-01-439-5298 INTERCHANGEABLE
Insulating Varnish,electrical
Cross-Reference Index
Part NumberManufacturer
THERMELEC G-3254 Ball Chemical Co (USA)
HI-THERM BC-340 PRIMARY John C. Dolph Company (USA)
MIL-I-24092 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5970-00-166-1682INTERCHANGEABLE
INSULATING VARNISH,ELECTRICAL
5970-00-548-7070INTERCHANGEABLE
INSULATING VARNISH,ELECTRICAL
DC-997
5970-00-548-7211INTERCHANGEABLE
INSULATING VARNISH,ELECTRICAL
5970-00-931-2413INTERCHANGEABLE
INSULATING VARNISH,ELECTRICAL
5970-00-979-9257INTERCHANGEABLE
INSULATING VARNISH,ELECTRICAL
5970-01-282-5215INTERCHANGEABLE
INSULATING VARNISH,ELECTRICAL
5970-01-439-5298INTERCHANGEABLE
INSULATING VARNISH,ELECTRICAL

Frequently Asked Questions

What is NSN 5970-01-012-1057?

NSN 5970-01-012-1057 is a Insulating Varnish,electrical, manufactured by John C. Dolph Company, classified under FSC 5970 (No Item Name Available). Status: active.

What are the part numbers for NSN 5970-01-012-1057?

NSN 5970-01-012-1057 has 3 cross-referenced part numbers: THERMELEC G-3254 (Ball Chemical Co), HI-THERM BC-340 (John C. Dolph Company), MIL-I-24092 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5970-01-012-1057?

There are 7 known substitutes for 5970-01-012-1057: 5970-00-166-1682, 5970-00-548-7070, 5970-00-548-7211 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of HI-THERM BC-340?

Key specifications for HI-THERM BC-340: Dry Dielectric Material Voltage Rating in Volts Per Mil Thickness: 1900.0; Unit Package Type: CAN; Special Features: ONE PINT; Environmental Protection: ACID RESISTANT AND GREASE AND LUBRICATING OIL AND MOISTURE RESISTANT AND SALT WATER RESISTANT. 8 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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