PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

441BInsulator,standoff

Birnbach Co Inc · NSN 5970-00-879-3181 · FSC 5970 · No Item Name Available
Verified by PartsTable
NSN 5970-00-879-3181 — this item is cataloged by the U.S. Government under National Stock Number 5970-00-879-3181. Primary manufacturer part number: 441B.
Features
  • Insulator,standoff — FSC 5970
  • Thread Length: 0.170 INCHES NOMINAL IN
  • Thread Location: MOUNTING FACILITY AND ELECTRICAL TERMINATION
  • Mounting Facility Type and Quantity: 1 THREADED HOLE(S)
  • Outside Diameter: 0.250 INCHES NOMINAL IN
  • Thread Class and Location: 2B ELECTRICAL TERMINATION AND 2B MOUNTING FACILITY
  • Screw Thread Quantity Per Inch and Location: 32 ELECTRICAL TERMINATION AND 32 MOUNTING FACILITY
  • Style Designator: PILLAR
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Insulator,standoff, cataloged under National Stock Number 5970-00-879-3181, 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 Birnbach Co Inc. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5970-00-879-3181
Primary Part Number441B
Item NameInsulator,standoff
FSC / FSG5970 / 59 — No Item Name Available
ManufacturerBirnbach Co Inc
StatusACTIVE
Thread Length0.170 INCHES NOMINAL IN
Thread LocationMOUNTING FACILITY AND ELECTRICAL TERMINATION
Mounting Facility Type and Quantity1 THREADED HOLE(S)
Outside Diameter0.250 INCHES NOMINAL IN
Thread Class and Location2B ELECTRICAL TERMINATION AND 2B MOUNTING FACILITY
Screw Thread Quantity Per Inch and Location32 ELECTRICAL TERMINATION AND 32 MOUNTING FACILITY
Style DesignatorPILLAR
Screw Thread Diameter and Location0.138 ELECTRICAL TERMINATION INCHES NOMINAL AND 0.138 MOUNTING FACILITY INCHES NOMINAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5910-00-669-3516441B INTERCHANGEABLE
Capacitor,fixed,paper Dielectric
Lucent Technologies Inc Corporate Headquarters
4820-01-170-505544-1B INTERCHANGEABLE
Valve,regulating,fluid Pressure
Dockson Corporation
Cross-Reference Index
Part NumberManufacturer
441B PRIMARY Birnbach Co Inc (USA)
211-024-0002 Northrop Grumman Systems Corporation (USA)
Related Parts
5910-00-669-3516INTERCHANGEABLE
CAPACITOR,FIXED,PAPER DIELECTRIC
441B
4820-01-170-5055INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
44-1B

Frequently Asked Questions

What is NSN 5970-00-879-3181?

NSN 5970-00-879-3181 is a Insulator,standoff, manufactured by Birnbach Co Inc, classified under FSC 5970 (No Item Name Available). Status: active.

What are the part numbers for NSN 5970-00-879-3181?

NSN 5970-00-879-3181 has 2 cross-referenced part numbers: 441B (Birnbach Co Inc), 211-024-0002 (Northrop Grumman Systems Corporation).

What NSN replaces 5970-00-879-3181?

There are 2 known substitutes for 5970-00-879-3181: 5910-00-669-3516, 4820-01-170-5055. Verify interchangeability with system specifications before substitution.

What are the specifications of 441B?

Key specifications for 441B: Thread Length: 0.170 INCHES NOMINAL IN; Thread Location: MOUNTING FACILITY AND ELECTRICAL TERMINATION; Mounting Facility Type and Quantity: 1 THREADED HOLE(S); Outside Diameter: 0.250 INCHES NOMINAL IN. 9 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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