PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

390-1Test Set,crystal Unit,quartz

L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products · NSN 6625-00-649-7838 · FSC 6625 · No Item Name Available
Verified by PartsTable
NSN 6625-00-649-7838 — this item is cataloged by the U.S. Government under National Stock Number 6625-00-649-7838. Primary manufacturer part number: 390-1.
Features
  • Test Set,crystal Unit,quartz — FSC 6625
  • Test Type for Which Designed: MEASURES IMPEDANCE; RELATIVE NOISE FIGURE AND RELATIVE SENSITIVITY
  • Length: 6.500 INCHES NOMINAL IN
  • Enclosure Feature: SINGLE ITEM W/CARRYING CASE
  • Phase: SINGLE LOCATION NOT OTHERWISE SPECIFIED
  • Frequency Rating: 50.0 HERTZ MINIMUM AND 60.0 HERTZ MAXIMUM LOCATION NOT OTHERWISE SPECIFIED
  • Height: 3.250 INCHES NOMINAL IN
  • Width: 6.250 INCHES NOMINAL IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Test Set,crystal Unit,quartz, cataloged under National Stock Number 6625-00-649-7838, 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 14 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6625-00-649-7838
Primary Part Number390-1
Item NameTest Set,crystal Unit,quartz
FSC / FSG6625 / 66 — No Item Name Available
ManufacturerL3harris Technologies, Inc. Dba Harris Corp Div Antenna Products
StatusACTIVE
Test Type for Which DesignedMEASURES IMPEDANCE; RELATIVE NOISE FIGURE AND RELATIVE SENSITIVITY
Length6.500 INCHES NOMINAL IN
Enclosure FeatureSINGLE ITEM W/CARRYING CASE
PhaseSINGLE LOCATION NOT OTHERWISE SPECIFIED
Frequency Rating50.0 HERTZ MINIMUM AND 60.0 HERTZ MAXIMUM LOCATION NOT OTHERWISE SPECIFIED
Height3.250 INCHES NOMINAL IN
Width6.250 INCHES NOMINAL IN
Test Type for Which DesignedMEASURES IMPEDANCE; RELATIVE NOISE FIGURE AND RELATIVE SENSITIVITY
Length6.500 INCHES NOMINAL IN
Enclosure FeatureSINGLE ITEM W/CARRYING CASE
PhaseSINGLE LOCATION NOT OTHERWISE SPECIFIED
Frequency Rating50.0 HERTZ MINIMUM AND 60.0 HERTZ MAXIMUM LOCATION NOT OTHERWISE SPECIFIED
Height3.250 INCHES NOMINAL IN
Width6.250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Shelf Life Code0
Criticality CodeS
Unit of IssueEA
SMR CodeVS
Verified Substitutes 12
6520-00-043-0843C-180 INTERCHANGEABLE
Crown Set,dental,temporary
3m Company Div 3m Espe Div.
8040-00-144-9789 INTERCHANGEABLE
Primer,adhesive
4720-00-194-93373901-87 INTERCHANGEABLE
Hose Assembly,nonmetallic
Aqualung Usa, Inc
5330-00-235-95303901 INTERCHANGEABLE
Gasket
Lawler Manufacturing Company, Inc.
3120-00-339-26068157P INTERCHANGEABLE
Bushing,sleeve
Curtiss-Wright Electro-Mechanical Corporation Div Epd
5340-00-634-7797390-1 INTERCHANGEABLE
Loop,strap Fastener
Buckles International, Inc.
4330-00-736-51773901 INTERCHANGEABLE
Filter,glass,fluted
Illinois Tool Works, Inc. Div Magnaflux
5985-01-052-1272390-1 INTERCHANGEABLE
Antenna
Shakespeare Company, Llc Div Military Electronics
4940-01-081-72843901 INTERCHANGEABLE
Stand,maintenance,armature
Prj Equipment Co
6610-01-219-68253901 INTERCHANGEABLE
Capsule,link Assemb
Kearflex Engineering Company
Cross-Reference Index
Part NumberManufacturer
390-1 PRIMARY L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products (USA)
Related Parts
6520-00-043-0843INTERCHANGEABLE
CROWN SET,DENTAL,TEMPORARY
C-180
8040-00-144-9789INTERCHANGEABLE
PRIMER,ADHESIVE
4720-00-194-9337INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
3901-87
5330-00-235-9530INTERCHANGEABLE
GASKET
3901
3120-00-339-2606INTERCHANGEABLE
BUSHING,SLEEVE
8157P
5340-00-634-7797INTERCHANGEABLE
LOOP,STRAP FASTENER
390-1
4330-00-736-5177INTERCHANGEABLE
FILTER,GLASS,FLUTED
3901
5985-01-052-1272INTERCHANGEABLE
ANTENNA
390-1
4940-01-081-7284INTERCHANGEABLE
STAND,MAINTENANCE,ARMATURE
3901
6610-01-219-6825INTERCHANGEABLE
CAPSULE,LINK ASSEMB
3901
6625-01-544-8410INTERCHANGEABLE
LEAD,TEST
3901
4510-01-553-3827INTERCHANGEABLE
SHOWER HEAD
3901

Frequently Asked Questions

What is NSN 6625-00-649-7838?

NSN 6625-00-649-7838 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: active.

What are the part numbers for NSN 6625-00-649-7838?

NSN 6625-00-649-7838 has 1 cross-referenced part number: 390-1 (L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products).

What NSN replaces 6625-00-649-7838?

There are 12 known substitutes for 6625-00-649-7838: 6520-00-043-0843, 8040-00-144-9789, 4720-00-194-9337 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 390-1?

Key specifications for 390-1: Test Type for Which Designed: MEASURES IMPEDANCE; RELATIVE NOISE FIGURE AND RELATIVE SENSITIVITY; Length: 6.500 INCHES NOMINAL IN; Enclosure Feature: SINGLE ITEM W/CARRYING CASE; Phase: SINGLE LOCATION NOT OTHERWISE SPECIFIED. 16 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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