PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

518BProbe,test

American Telephone and Telegraph Co · NSN 6625-00-255-3879 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-255-3879 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-255-3879. Primary manufacturer part number: 518B.
Features
  • Probe,test — FSC 6625
  • Color: BLACK
  • Surface Finish: SMOOTHED
  • Conductor Attachment Method: WIRE ATTACHED TO TIP BY 2 SCREW TERMINALS
  • Tip Termination Type: ADJUSTABLE PROBE
  • Material: PLASTIC PHENOLIC HANDLE
  • Overall Diameter: 0.438 INCHES NOMINAL IN
  • Handle Length: 5.312 INCHES NOMINAL IN
Applications
  • Applications requiring Plastic Phenolic Handle construction
General Description

The Probe,test, cataloged under National Stock Number 6625-00-255-3879, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is American Telephone and Telegraph Co. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6625-00-255-3879
Primary Part Number518B
Item NameProbe,test
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerAmerican Telephone and Telegraph Co
StatusACTIVE
ColorBLACK
Surface FinishSMOOTHED
Conductor Attachment MethodWIRE ATTACHED TO TIP BY 2 SCREW TERMINALS
Tip Termination TypeADJUSTABLE PROBE
MaterialPLASTIC PHENOLIC HANDLE
Overall Diameter0.438 INCHES NOMINAL IN
Handle Length5.312 INCHES NOMINAL IN
ColorBLACK
Surface FinishSMOOTHED
Conductor Attachment MethodWIRE ATTACHED TO TIP BY 2 SCREW TERMINALS
Tip Termination TypeADJUSTABLE PROBE
MaterialPLASTIC PHENOLIC HANDLE
Overall Diameter0.438 INCHES NOMINAL IN
Handle Length5.312 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5905-00-107-4108JANR11TYPERC31BF102J INTERCHANGEABLE
Resistor,fixed,composition
Joint Electronics Type Designation System
5120-00-429-96291-173 INTERCHANGEABLE
Adapter,torque Wrench
Chief of Engineers Dept of Army
5330-00-460-2629 INTERCHANGEABLE
Gasket
Cross-Reference Index
Part NumberManufacturer
518B American Telephone and Telegraph Co (USA)
518C Lucent Technologies Inc Dba Federal Marketing Group (USA)
D166943 At and T Corp (USA)
518C Lucent Technologies Inc Corporate Headquarters (USA)
518C American Telephone and Telegraph Co (USA)
D166943 American Telephone and Telegraph Co (USA)
Related Parts
5905-00-107-4108INTERCHANGEABLE
RESISTOR,FIXED,COMPOSITION
JANR11TYPERC31BF102J
5120-00-429-9629INTERCHANGEABLE
ADAPTER,TORQUE WRENCH
1-173
5330-00-460-2629INTERCHANGEABLE
GASKET

Frequently Asked Questions

What is NSN 6625-00-255-3879?

NSN 6625-00-255-3879 is a Probe,test, manufactured by American Telephone and Telegraph Co, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-00-255-3879?

NSN 6625-00-255-3879 has 6 cross-referenced part numbers: 518B (American Telephone and Telegraph Co), 518C (Lucent Technologies Inc Dba Federal Marketing Group), D166943 (At and T Corp), 518C (Lucent Technologies Inc Corporate Headquarters), 518C (American Telephone and Telegraph Co) and 1 more.

What NSN replaces 6625-00-255-3879?

There are 3 known substitutes for 6625-00-255-3879: 5905-00-107-4108, 5120-00-429-9629, 5330-00-460-2629. Verify interchangeability with system specifications before substitution.

What are the specifications of 518B?

Key specifications for 518B: Color: BLACK; Surface Finish: SMOOTHED; Conductor Attachment Method: WIRE ATTACHED TO TIP BY 2 SCREW TERMINALS; Tip Termination Type: ADJUSTABLE PROBE. 20 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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