PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21846Insulator,feedthru

Isolantite Manufacturing Co Inc Div Isolantite Manufacturing Inc. · NSN 5970-00-296-1448 · FSC 5970 · No Item Name Available
Verified by PartsTable
NSN 5970-00-296-1448 — this item is cataloged by the U.S. Government under National Stock Number 5970-00-296-1448. Primary manufacturer part number: 21846.
Features
  • Insulator,feedthru — FSC 5970
  • Height Above Mounting Surface: 5.844 INCHES NOMINAL IN
  • Screw Thread Diameter and Location: 0.250 CENTER STUD INCHES NOMINAL
  • Screw Thread Quantity Per Inch and Location: 28 CENTER STUD
  • Top Diameter: 0.750 INCHES NOMINAL IN
  • Electrical Termination Quantity: 1
  • Center Stud Length: 9.750 INCHES NOMINAL IN
  • Screw Thread Series Designator and Location: CENTER STUD UNF
Applications
  • Applications requiring Ceramic Overall construction
General Description

The Insulator,feedthru, cataloged under National Stock Number 5970-00-296-1448, 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 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 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: Cancelled.

Technical Specifications
ParameterValue
NSN5970-00-296-1448
Primary Part Number21846
Item NameInsulator,feedthru
FSC / FSG5970 / 59 — No Item Name Available
ManufacturerIsolantite Manufacturing Co Inc Div Isolantite Manufacturing Inc.
StatusCANCELLED
Height Above Mounting Surface5.844 INCHES NOMINAL IN
Screw Thread Diameter and Location0.250 CENTER STUD INCHES NOMINAL
Screw Thread Quantity Per Inch and Location28 CENTER STUD
Top Diameter0.750 INCHES NOMINAL IN
Electrical Termination Quantity1
Center Stud Length9.750 INCHES NOMINAL IN
Screw Thread Series Designator and LocationCENTER STUD UNF
Thread Class and Location2A CENTER STUD A
Mounting Facility Type and Quantity12 UNTHREADED HOLE(S)
MaterialCERAMIC OVERALL
Surface Treatment and LocationOVERALL GLAZED
Outside Diameter1.750 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
6240-00-296-04887839 INTERCHANGEABLE
Lamp,incandescent
Gte Products Corp Lighting Products Group Hillsboro Miniature Lamp Plant
2805-00-356-124621846 INTERCHANGEABLE
Guide,valve Stem
Briggs and Stratton Corp
3010-00-660-5331163DBZ-B-R-R INTERCHANGEABLE
Coupling,shaft,flexible
Rexnord Industries, Llc Div Couplings Division
5950-00-683-3139 INTERCHANGEABLE
Transformer,audio Frequency
5815-01-171-1616 INTERCHANGEABLE
Roller Jockey
5365-01-197-51572184-6 INTERCHANGEABLE
Bushing
Manitowoc Engineering Co Division of the Manitowoc Co Inc
6550-01-315-1989221846 INTERCHANGEABLE
Culture Medium,anaerobe Cdc Bloo
Becton, Dickinson and Company Dba Becton Dickinson & Co
Cross-Reference Index
Part NumberManufacturer
SL50-0127 Carborundum Co the Refractories and Electronics Div Latrobe Plant (USA)
21846 PRIMARY Isolantite Manufacturing Co Inc Div Isolantite Manufacturing Inc. (USA)
5175793 The Boeing Company (USA)
5175793 PRIMARY The Boeing Company (USA)
Related Parts
6240-00-296-0488INTERCHANGEABLE
LAMP,INCANDESCENT
7839
2805-00-356-1246INTERCHANGEABLE
GUIDE,VALVE STEM
21846
3010-00-660-5331INTERCHANGEABLE
COUPLING,SHAFT,FLEXIBLE
163DBZ-B-R-R
5950-00-683-3139INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
5815-01-171-1616INTERCHANGEABLE
ROLLER JOCKEY
5365-01-197-5157INTERCHANGEABLE
BUSHING
2184-6
6550-01-315-1989INTERCHANGEABLE
CULTURE MEDIUM,ANAEROBE CDC BLOO
221846

Frequently Asked Questions

What is NSN 5970-00-296-1448?

NSN 5970-00-296-1448 is a Insulator,feedthru, 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 5970-00-296-1448?

NSN 5970-00-296-1448 has 4 cross-referenced part numbers: SL50-0127 (Carborundum Co the Refractories and Electronics Div Latrobe Plant), 21846 (Isolantite Manufacturing Co Inc Div Isolantite Manufacturing Inc.), 5175793 (The Boeing Company), 5175793 (The Boeing Company).

What NSN replaces 5970-00-296-1448?

There are 7 known substitutes for 5970-00-296-1448: 6240-00-296-0488, 2805-00-356-1246, 3010-00-660-5331 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21846?

Key specifications for 21846: Special Features: FLANGE MOUNTED; Height Above Mounting Surface: 5.844 INCHES NOMINAL IN; Screw Thread Diameter and Location: 0.250 CENTER STUD INCHES NOMINAL; Screw Thread Quantity Per Inch and Location: 28 CENTER STUD. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5970-00-296-1448 still in active supply?

NSN 5970-00-296-1448 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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