PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

HH-I-435Insulator,knob

Federal Specifications Promulgated by General Services Administration Washington DC · NSN 5970-00-178-1188 · FSC 5970 · No Item Name Available
Verified by PartsTable
NSN 5970-00-178-1188 — this item is cataloged by the U.S. Government under National Stock Number 5970-00-178-1188. Primary manufacturer part number: HH-I-435.
Features
  • Insulator,knob — FSC 5970
  • Mounting Facility Type and Quantity: 1 UNTHREADED HOLE(S)
  • Second Distance From Conductor Slot to Opposite Surface: 1.250 INCHES NOMINAL IN
  • Distance Between Conductor Groove and Mounting Hole: 0.250 INCHES MINIMUM IN
  • First Distance From Conductor Slot to Opposite Surface: 0.688 INCHES NOMINAL IN
  • Style Designator: CYLINDRICAL, SPLIT
  • Material: PORCELAIN OVERALL
  • Surface Treatment and Location: OVERALL GLAZED
Applications
  • Applications requiring Porcelain Overall construction
General Description

The Insulator,knob, cataloged under National Stock Number 5970-00-178-1188, 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 Federal Specifications Promulgated by General Services Administration Washington DC. Government technical data includes 10 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: Cancelled.

Technical Specifications
ParameterValue
NSN5970-00-178-1188
Primary Part NumberHH-I-435
Item NameInsulator,knob
FSC / FSG5970 / 59 — No Item Name Available
ManufacturerFederal Specifications Promulgated by General Services Administration Washington DC
StatusCANCELLED
Mounting Facility Type and Quantity1 UNTHREADED HOLE(S)
Second Distance From Conductor Slot to Opposite Surface1.250 INCHES NOMINAL IN
Distance Between Conductor Groove and Mounting Hole0.250 INCHES MINIMUM IN
First Distance From Conductor Slot to Opposite Surface0.688 INCHES NOMINAL IN
Style DesignatorCYLINDRICAL, SPLIT
MaterialPORCELAIN OVERALL
Surface Treatment and LocationOVERALL GLAZED
Nondefinitive Spec/std Data2 CLASS AND 4 SIZE AND III TYPE
Outside Diameter1.500 INCHES MINIMUM IN
Mounting Hole Diameter0.250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5970-00-042-1533C29.6-56-1 INTERCHANGEABLE
Insulator,pin
American National Standards Institute Incorporated Dba American National Standards Institute
5970-00-082-3335C29-3CLASS53-2 INTERCHANGEABLE
Insulator,strain
American National Standards Institute Incorporated Dba American National Standards Institute
5970-00-223-2518 INTERCHANGEABLE
Insulator,standoff
5970-00-224-4269 INTERCHANGEABLE
Insulator,suspension
5970-00-250-29986300-0014-001 INTERCHANGEABLE
Insulator,strain
Antenna Products Corporation Dba Antenna Products Corp
5970-00-250-3000 INTERCHANGEABLE
Insulator,strain
5970-00-263-6885CLASS 55-2 INTERCHANGEABLE
Insulator,pin
American National Standards Institute Incorporated Dba American National Standards Institute
5970-00-263-6888 INTERCHANGEABLE
Insulator,knob
5970-00-280-4918TYPEIN53-3G553 INTERCHANGEABLE
Insulator,knob
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5970-00-280-8922C29-5-55-2 INTERCHANGEABLE
Insulator,pin
American National Standards Institute Incorporated Dba American National Standards Institute
Cross-Reference Index
Part NumberManufacturer
HH-I-435 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
Related Parts
5970-00-042-1533INTERCHANGEABLE
INSULATOR,PIN
C29.6-56-1
5970-00-082-3335INTERCHANGEABLE
INSULATOR,STRAIN
C29-3CLASS53-2
5970-00-223-2518INTERCHANGEABLE
INSULATOR,STANDOFF
5970-00-224-4269INTERCHANGEABLE
INSULATOR,SUSPENSION
5970-00-250-2998INTERCHANGEABLE
INSULATOR,STRAIN
6300-0014-001
5970-00-250-3000INTERCHANGEABLE
INSULATOR,STRAIN
5970-00-263-6885INTERCHANGEABLE
INSULATOR,PIN
CLASS 55-2
5970-00-263-6888INTERCHANGEABLE
INSULATOR,KNOB
5970-00-280-4918INTERCHANGEABLE
INSULATOR,KNOB
TYPEIN53-3G553
5970-00-280-8922INTERCHANGEABLE
INSULATOR,PIN
C29-5-55-2
5970-00-284-8577INTERCHANGEABLE
INSULATOR,CLEAT
5970-00-284-9163INTERCHANGEABLE
INSULATOR,STANDOFF

Frequently Asked Questions

What is NSN 5970-00-178-1188?

NSN 5970-00-178-1188 is a Insulator,knob, manufactured by Federal Specifications Promulgated by General Services Administration Washington DC, classified under FSC 5970 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5970-00-178-1188?

NSN 5970-00-178-1188 has 1 cross-referenced part number: HH-I-435 (Federal Specifications Promulgated by General Services Administration Washington DC).

What NSN replaces 5970-00-178-1188?

There are 12 known substitutes for 5970-00-178-1188: 5970-00-042-1533, 5970-00-082-3335, 5970-00-223-2518 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of HH-I-435?

Key specifications for HH-I-435: Mounting Facility Type and Quantity: 1 UNTHREADED HOLE(S); Second Distance From Conductor Slot to Opposite Surface: 1.250 INCHES NOMINAL IN; Distance Between Conductor Groove and Mounting Hole: 0.250 INCHES MINIMUM IN; First Distance From Conductor Slot to Opposite Surface: 0.688 INCHES NOMINAL IN. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5970-00-178-1188 still in active supply?

NSN 5970-00-178-1188 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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