PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

306Insulator,bowl

Isolantite Manufacturing Co Inc Div Isolantite Manufacturing Inc. · NSN 5970-00-253-6741 · FSC 5970 · No Item Name Available
Verified by PartsTable
NSN 5970-00-253-6741 — this item is cataloged by the U.S. Government under National Stock Number 5970-00-253-6741. Primary manufacturer part number: 306.
Features
  • Insulator,bowl — FSC 5970
  • Identification Code Color: WHITE
  • Unable to Decode: UNABLE TO DECODE
  • Bowl Diameter: 3.750 INCHES NOMINAL IN
  • Top Hole Diameter: 0.563 INCHES NOMINAL IN
  • Shoulder Depth: 0.094 INCHES NOMINAL IN
  • Mounting Bolt Circle Diameter: 4.625 INCHES NOMINAL IN
  • Style Designator: DOME, FLANGED
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Insulator,bowl, cataloged under National Stock Number 5970-00-253-6741, 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 Isolantite Manufacturing Co Inc Div Isolantite Manufacturing Inc.. Government technical data includes 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5970-00-253-6741
Primary Part Number306
Item NameInsulator,bowl
FSC / FSG5970 / 59 — No Item Name Available
ManufacturerIsolantite Manufacturing Co Inc Div Isolantite Manufacturing Inc.
StatusCANCELLED
Identification Code ColorWHITE
Unable to DecodeUNABLE TO DECODE
Bowl Diameter3.750 INCHES NOMINAL IN
Top Hole Diameter0.563 INCHES NOMINAL IN
Shoulder Depth0.094 INCHES NOMINAL IN
Mounting Bolt Circle Diameter4.625 INCHES NOMINAL IN
Style DesignatorDOME, FLANGED
Mounting Hole Diameter0.312 INCHES NOMINAL IN
Surface Treatment and LocationOVERALL GLAZED
Base Inside Diameter3.125 INCHES NOMINAL IN
Height Above Mounting Surface2.687 INCHES NOMINAL IN
Mounting Facility Type and Quantity6 UNTHREADED HOLE(S)
Flange Thickness0.500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
5120-00-234-8741100-3/8 INTERCHANGEABLE
Bender,tube,hand
General Tools Manufacturing Co., Llc.
5120-01-212-31271088-00 INTERCHANGEABLE
Guide,valve Seat Tool
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
2815-01-331-26627700616180380 INTERCHANGEABLE
Lock,valve Spring Retainer
Deutz Corporation
4220-01-388-10301088-00 INTERCHANGEABLE
Regulator,breathing Gas Pressure
Aqualung Usa, Inc
Cross-Reference Index
Part NumberManufacturer
PW42-4 Duro-Test Lighting (USA)
61638 Naval Ship Systems Command (USA)
190-6930-00 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
306 PRIMARY Isolantite Manufacturing Co Inc Div Isolantite Manufacturing Inc. (USA)
1088-00 Titan Corp the Indiana General Ferrite Component Products Div (USA)
PW42-4 Duro-Test Corp (USA)
RE61A340TYPE61638 PRIMARY Naval Ship Systems Command (USA)
Related Parts
5120-00-234-8741INTERCHANGEABLE
BENDER,TUBE,HAND
100-3/8
5120-01-212-3127INTERCHANGEABLE
GUIDE,VALVE SEAT TOOL
1088-00
2815-01-331-2662INTERCHANGEABLE
LOCK,VALVE SPRING RETAINER
7700616180380
4220-01-388-1030INTERCHANGEABLE
REGULATOR,BREATHING GAS PRESSURE
1088-00

Frequently Asked Questions

What is NSN 5970-00-253-6741?

NSN 5970-00-253-6741 is a Insulator,bowl, manufactured by Isolantite Manufacturing Co Inc Div Isolantite Manufacturing Inc., classified under FSC 5970 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5970-00-253-6741?

NSN 5970-00-253-6741 has 7 cross-referenced part numbers: PW42-4 (Duro-Test Lighting), 61638 (Naval Ship Systems Command), 190-6930-00 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems), 306 (Isolantite Manufacturing Co Inc Div Isolantite Manufacturing Inc.), 1088-00 (Titan Corp the Indiana General Ferrite Component Products Div) and 2 more.

What NSN replaces 5970-00-253-6741?

There are 4 known substitutes for 5970-00-253-6741: 5120-00-234-8741, 5120-01-212-3127, 2815-01-331-2662 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 306?

Key specifications for 306: Identification Code Color: WHITE; Unable to Decode: UNABLE TO DECODE; Bowl Diameter: 3.750 INCHES NOMINAL IN; Top Hole Diameter: 0.563 INCHES NOMINAL IN. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5970-00-253-6741 still in active supply?

NSN 5970-00-253-6741 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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