PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

HC-6/UHolder,quartz Crystal

United States Crystal Corp · NSN 5955-00-854-8087 · FSC 5955 · No Item Name Available
Verified by PartsTable
NSN 5955-00-854-8087 — this item is cataloged by the U.S. Government under National Stock Number 5955-00-854-8087. Primary manufacturer part number: HC-6/U.
Features
  • Holder,quartz Crystal — FSC 5955
  • Test Data Document: 81349-MIL-H-10056 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
  • Style Designator: RECTANGULAR BODY, PIN TERMINALS
  • Air Gap Adjustment Location: EXTERNAL
  • Crystal Plate Quantity Accommodated: 1
  • Center to Center Distance Between Terminals: 0.486 INCHES NOMINAL IN
  • Overall Thickness: 0.314 INCHES NOMINAL IN
  • Body Length: 0.750 INCHES NOMINAL IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Holder,quartz Crystal, cataloged under National Stock Number 5955-00-854-8087, is classified within Federal Supply Class 5955 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is United States Crystal Corp. Government technical data includes 9 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5955-00-854-8087
Primary Part NumberHC-6/U
Item NameHolder,quartz Crystal
FSC / FSG5955 / 59 — No Item Name Available
ManufacturerUnited States Crystal Corp
StatusCANCELLED
Test Data Document81349-MIL-H-10056 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Style DesignatorRECTANGULAR BODY, PIN TERMINALS
Air Gap Adjustment LocationEXTERNAL
Crystal Plate Quantity Accommodated1
Center to Center Distance Between Terminals0.486 INCHES NOMINAL IN
Overall Thickness0.314 INCHES NOMINAL IN
Body Length0.750 INCHES NOMINAL IN
Terminal Length0.238 INCHES NOMINAL IN
Terminal Diameter0.050 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
4930-00-236-0850 INTERCHANGEABLE
Clamp,hose Repair
5935-00-991-3471 INTERCHANGEABLE
Socket,plug-in Electronic Compon
4720-01-061-1569HC6 INTERCHANGEABLE
Hose Assembly,nonmetallic
Templeton Kenly and Co Inc
4730-01-219-2049HC-6ST-ZD INTERCHANGEABLE
Clamp,hose
Rotor Clip Company, Inc.
5895-01-503-1405 INTERCHANGEABLE
Console,communication Control
4730-01-533-4148HC-6 INTERCHANGEABLE
Clamp,hose,special-Shaped
Clareys Safety Equipment Inc.
Cross-Reference Index
Part NumberManufacturer
HC-6/U United States Crystal Corp (USA)
HC-6/U Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
HC-6/U Bliley Technologies Inc (USA)
MILH10056-2CHC6U Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-H-10056/2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
HC-6 Crystek Crystals Corporation Dba Crystek Corp (USA)
Related Parts
4930-00-236-0850INTERCHANGEABLE
CLAMP,HOSE REPAIR
5935-00-991-3471INTERCHANGEABLE
SOCKET,PLUG-IN ELECTRONIC COMPON
4720-01-061-1569INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
HC6
4730-01-219-2049INTERCHANGEABLE
CLAMP,HOSE
HC-6ST-ZD
5895-01-503-1405INTERCHANGEABLE
CONSOLE,COMMUNICATION CONTROL
4730-01-533-4148INTERCHANGEABLE
CLAMP,HOSE,SPECIAL-SHAPED
HC-6

Frequently Asked Questions

What is NSN 5955-00-854-8087?

NSN 5955-00-854-8087 is a Holder,quartz Crystal, manufactured by United States Crystal Corp, classified under FSC 5955 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5955-00-854-8087?

NSN 5955-00-854-8087 has 6 cross-referenced part numbers: HC-6/U (United States Crystal Corp), HC-6/U (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), HC-6/U (Bliley Technologies Inc), MILH10056-2CHC6U (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-H-10056/2 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 1 more.

What NSN replaces 5955-00-854-8087?

There are 6 known substitutes for 5955-00-854-8087: 4930-00-236-0850, 5935-00-991-3471, 4720-01-061-1569 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of HC-6/U?

Key specifications for HC-6/U: Overall Width: 0.720 INCHES NOMINAL IN; Test Data Document: 81349-MIL-H-10056 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).; Style Designator: RECTANGULAR BODY, PIN TERMINALS; Air Gap Adjustment Location: EXTERNAL. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5955-00-854-8087 still in active supply?

NSN 5955-00-854-8087 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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