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642777 — CRYSTAL UNIT,QUARTZ

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

642777: CRYSTAL UNIT,QUARTZ.

The CRYSTAL UNIT,QUARTZ is a the manufacturer industrial component. Key specifications include material: GLASS COVER HOLDER, body_width: 0.402 INCHES MAXIMUM IN, construction: SOLID, overall_width: 0.435 INCHES MAXIMUM IN, body_thickness: 0.150 INCHES MAXIMUM IN, overall_length: 0.530 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 2990-00-646-7004, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
642777
NSN: 2990-00-646-7004
NIINs: 006467004, 010812706, 012127976, 015808965
FSC: 2990 — Miscellaneous Engine Accessories, Nonaircraft
CAGE: 34623 — AM GENERAL LLC (USA)
SPECIFICATIONS
materialGLASS COVER HOLDER
body_width0.402 INCHES MAXIMUM IN
constructionSOLID
overall_width0.435 INCHES MAXIMUM IN
body_thickness0.150 INCHES MAXIMUM IN
overall_length0.530 INCHES MAXIMUM IN
terminal_length0.5003 INCHES MINIMUM IN
style_designatorOVAL BODY, PIN TERMINALS
circuit_resonanceSERIES RESONANCE
overall_thickness0.183 INCHES MAXIMUM IN
precious_materialSILVER
surface_treatmentSILVER
NSN2990-00-646-7004
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available CRYSTAL UNIT,QUARTZ TITLE COMPONENT PN 642777 MFR CRYSTAL UNIT,QUARTZ
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: 16 GAGE STEEL,1.5 IN.W,2.75 IN.L,2 HOLES 11/32 IN.DIA,1.5 IN.C-C IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTION16 GAGE STEEL,1.5 IN.W,2.75 IN.L,2 HOLES 11/32 IN.DIA,1.5 IN.C-C IN
SUBSTITUTES & CROSS-REFERENCES 1
00642777Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 642777?
642777 is a CRYSTAL UNIT,QUARTZ.
What parts can replace 642777?
There is 1 known substitute for 642777: 00642777. Substitute compatibility should be verified for your specific system.
What is the NSN for 642777?
642777 is cataloged in the U.S. Government catalog under NSN 2990-00-646-7004. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.