PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

77Test Set,telephone

Micro Computer Systems Inc · NSN 6625-01-104-1790 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-01-104-1790 — this item is cataloged by the U.S. Government under National Stock Number 6625-01-104-1790. Primary manufacturer part number: 77.
Features
  • Test Set,telephone — FSC 6625
  • Phase: SINGLE LOCATION NOT OTHERWISE SPECIFIED
  • Frequency Rating: 60.0 HERTZ NOMINAL LOCATION NOT OTHERWISE SPECIFIED
  • Test Type for Which Designed: FOREIGN VOLTAGE,INSULATION RESISTANCE,LONGITUDINAL BALANCE,INCORRECT LOADING,INCORRECT BRIDGE TOP,AND NOISE LEVEL
  • Enclosure Feature: MULTIPLE ITEM W/CARRYING CASE
  • AC Voltage Rating: 115.0 VOLTS NOMINAL LOCATION NOT OTHERWISE SPECIFIED
  • Material: PLASTIC CARRYING CASE
  • Phase: SINGLE LOCATION NOT OTHERWISE SPECIFIED
Applications
  • Applications requiring Plastic Carrying Case construction
General Description

The Test Set,telephone, cataloged under National Stock Number 6625-01-104-1790, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Micro Computer Systems Inc. Government technical data includes 12 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6625-01-104-1790
Primary Part Number77
Item NameTest Set,telephone
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerMicro Computer Systems Inc
StatusACTIVE
PhaseSINGLE LOCATION NOT OTHERWISE SPECIFIED
Frequency Rating60.0 HERTZ NOMINAL LOCATION NOT OTHERWISE SPECIFIED
Test Type for Which DesignedFOREIGN VOLTAGE,INSULATION RESISTANCE,LONGITUDINAL BALANCE,INCORRECT LOADING,INCORRECT BRIDGE TOP,AND NOISE LEVEL
Enclosure FeatureMULTIPLE ITEM W/CARRYING CASE
AC Voltage Rating115.0 VOLTS NOMINAL LOCATION NOT OTHERWISE SPECIFIED
MaterialPLASTIC CARRYING CASE
PhaseSINGLE LOCATION NOT OTHERWISE SPECIFIED
Frequency Rating60.0 HERTZ NOMINAL LOCATION NOT OTHERWISE SPECIFIED
Test Type for Which DesignedFOREIGN VOLTAGE,INSULATION RESISTANCE,LONGITUDINAL BALANCE,INCORRECT LOADING,INCORRECT BRIDGE TOP,AND NOISE LEVEL
Enclosure FeatureMULTIPLE ITEM W/CARRYING CASE
AC Voltage Rating115.0 VOLTS NOMINAL LOCATION NOT OTHERWISE SPECIFIED
MaterialPLASTIC CARRYING CASE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
6625-01-168-685677-2 SUCCESSOR
Multimeter
Fluke Corp
6625-01-091-099977 INTERCHANGEABLE
Test Set,electrical Cable
Micro Instrument Co Inc
Cross-Reference Index
Part NumberManufacturer
77 PRIMARY Micro Computer Systems Inc (USA)
Related Parts
6625-01-168-6856SUCCESSOR
MULTIMETER
77-2
6625-01-091-0999INTERCHANGEABLE
TEST SET,ELECTRICAL CABLE
77

Frequently Asked Questions

What is NSN 6625-01-104-1790?

NSN 6625-01-104-1790 is a Test Set,telephone, manufactured by Micro Computer Systems Inc, classified under FSC 6625 (No Item Name Available). Status: active.

What are the part numbers for NSN 6625-01-104-1790?

NSN 6625-01-104-1790 has 1 cross-referenced part number: 77 (Micro Computer Systems Inc).

What NSN replaces 6625-01-104-1790?

There are 2 known substitutes for 6625-01-104-1790: 6625-01-168-6856, 6625-01-091-0999. Verify interchangeability with system specifications before substitution.

What are the specifications of 77?

Key specifications for 77: Phase: SINGLE LOCATION NOT OTHERWISE SPECIFIED; Frequency Rating: 60.0 HERTZ NOMINAL LOCATION NOT OTHERWISE SPECIFIED; Test Type for Which Designed: FOREIGN VOLTAGE,INSULATION RESISTANCE,LONGITUDINAL BALANCE,INCORRECT LOADING,INCORRECT BRIDGE TOP,AND NOISE LEVEL; Enclosure Feature: MULTIPLE ITEM W/CARRYING CASE. 12 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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