PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

391Test Set,crystal Unit,quartz

L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products · NSN 6625-00-982-5255 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-982-5255 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-982-5255. Primary manufacturer part number: 391.
Features
  • Test Set,crystal Unit,quartz — FSC 6625
  • Test Type for Which Designed: APPROX IMPEDANCE CHECK;MEASUREMENT OF RELATIVE NOISE FIGURE;MEASUREMENTOF RELATIVE SENSITIVITY
  • Length: 6.250 INCHES NOMINAL IN
  • Width: 6.500 INCHES NOMINAL IN
  • Height: 3.250 INCHES NOMINAL IN
  • Material: ALUMINUM CARRYING CASE
  • Enclosure Feature: SINGLE ITEM W/CARRYING CASE
  • Electrical Power Source Relationship: OPERATING
Applications
  • Applications requiring Aluminum Carrying Case construction
General Description

The Test Set,crystal Unit,quartz, cataloged under National Stock Number 6625-00-982-5255, is classified within Federal Supply Class 6625 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-982-5255
Primary Part Number391
Item NameTest Set,crystal Unit,quartz
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerL3harris Technologies, Inc. Dba Harris Corp Div Antenna Products
StatusCANCELLED
Test Type for Which DesignedAPPROX IMPEDANCE CHECK;MEASUREMENT OF RELATIVE NOISE FIGURE;MEASUREMENTOF RELATIVE SENSITIVITY
Length6.250 INCHES NOMINAL IN
Width6.500 INCHES NOMINAL IN
Height3.250 INCHES NOMINAL IN
MaterialALUMINUM CARRYING CASE
Enclosure FeatureSINGLE ITEM W/CARRYING CASE
Electrical Power Source RelationshipOPERATING
DC Voltage Rating1.5 VOLTS NOMINAL LOCATION NOT OTHERWISE SPECIFIED
Test Type for Which DesignedAPPROX IMPEDANCE CHECK;MEASUREMENT OF RELATIVE NOISE FIGURE;MEASUREMENTOF RELATIVE SENSITIVITY
Length6.250 INCHES NOMINAL IN
Width6.500 INCHES NOMINAL IN
Height3.250 INCHES NOMINAL IN
MaterialALUMINUM CARRYING CASE
Enclosure FeatureSINGLE ITEM W/CARRYING CASE
Electrical Power Source RelationshipOPERATING
DC Voltage Rating1.5 VOLTS NOMINAL LOCATION NOT OTHERWISE SPECIFIED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Shelf Life Code0
Criticality CodeS
Unit of IssueEA
SMR CodeVS
Weight10.4000 lbs
Cube2.0076 cu ft
Verified Substitutes 12
4720-00-176-4522 INTERCHANGEABLE
Hose Assembly,nonmetallic
5305-00-192-0489 INTERCHANGEABLE
Screw
3835-00-223-9080 INTERCHANGEABLE
Shoe,well Pipe and Casing
5935-00-237-659590-5243297 INTERCHANGEABLE
Jack,tip
Pegasus Inc
5935-00-238-4238136BLACK INTERCHANGEABLE
Jack,tip
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
6740-00-535-4701391 INTERCHANGEABLE
Light Assy,projecti
Miller-Holzwarth Inc.
5940-00-656-506210528698 INTERCHANGEABLE
Adapter,radio Frequency Cable
Us Army Aviation and Missile Command
5930-00-686-953339-1 INTERCHANGEABLE
Switch,push
Grayhill Inc
5315-00-809-0350062-4375MCP INTERCHANGEABLE
Pin,spring
Spirol International Corporation
2530-00-913-2038310716C12 INTERCHANGEABLE
Parts Kit,hydraulic Brake Wheel
Dressta North America Ltd
Cross-Reference Index
Part NumberManufacturer
2190D43 L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products (USA)
391 PRIMARY L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products (USA)
390A2 L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products (USA)
390-23D2 L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products (USA)
Related Parts
4720-00-176-4522INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
5305-00-192-0489INTERCHANGEABLE
SCREW
3835-00-223-9080INTERCHANGEABLE
SHOE,WELL PIPE AND CASING
5935-00-237-6595INTERCHANGEABLE
JACK,TIP
90-5243297
5935-00-238-4238INTERCHANGEABLE
JACK,TIP
136BLACK
6740-00-535-4701INTERCHANGEABLE
LIGHT ASSY,PROJECTI
391
5940-00-656-5062INTERCHANGEABLE
ADAPTER,RADIO FREQUENCY CABLE
10528698
5930-00-686-9533INTERCHANGEABLE
SWITCH,PUSH
39-1
5315-00-809-0350INTERCHANGEABLE
PIN,SPRING
062-4375MCP
2530-00-913-2038INTERCHANGEABLE
PARTS KIT,HYDRAULIC BRAKE WHEEL
310716C12
5970-01-087-7328INTERCHANGEABLE
INSULATOR,BUSHING
391
5962-01-117-2601INTERCHANGEABLE
MICROCIRCUIT

Frequently Asked Questions

What is NSN 6625-00-982-5255?

NSN 6625-00-982-5255 is a Test Set,crystal Unit,quartz, manufactured by L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products, classified under FSC 6625 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6625-00-982-5255?

NSN 6625-00-982-5255 has 4 cross-referenced part numbers: 2190D43 (L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products), 391 (L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products), 390A2 (L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products), 390-23D2 (L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products).

What NSN replaces 6625-00-982-5255?

There are 12 known substitutes for 6625-00-982-5255: 4720-00-176-4522, 5305-00-192-0489, 3835-00-223-9080 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 391?

Key specifications for 391: Test Type for Which Designed: APPROX IMPEDANCE CHECK;MEASUREMENT OF RELATIVE NOISE FIGURE;MEASUREMENTOF RELATIVE SENSITIVITY; Length: 6.250 INCHES NOMINAL IN; Width: 6.500 INCHES NOMINAL IN; Height: 3.250 INCHES NOMINAL IN. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6625-00-982-5255 still in active supply?

NSN 6625-00-982-5255 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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