PartsTable
Technical Data Sheet
PartsTable / MRO / C-6689
C-6689 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

CAPACITOR,FIXED,MICA DIELECTRIC. Key specifications include material: COPPER ALLOY, head_length: 0.090 INCHES NOMINAL IN, thread_class: 2A NUT THREAD A, head_diameter: 0.203 INCHES NOMINAL IN, thread_length: 0.315 INCHES MINIMUM NUT THREAD IN, overall_length: 0.385 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-01-083-9640, 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
MRO→ MRO_GENERAL→ C-6689
NSN: 5307-01-083-9640
FSC: 5307
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialCOPPER ALLOY
head_length0.090 INCHES NOMINAL IN
thread_class2A NUT THREAD A
head_diameter0.203 INCHES NOMINAL IN
thread_length0.315 INCHES MINIMUM NUT THREAD IN
overall_length0.385 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN
locking_featureSELF-CLINCHING HEAD
style_designatorSELF-LOCKING
thread_directionRIGHT-HAND NUT THREAD
surface_treatmentTIN OVERALL
nominal_thread_size0.138 INCHES NUT THREAD IN
thread_quantity_per_inch32 NUT THREAD
NSN5307-01-083-9640
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: C-6689 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL: COPPER ALLOY
•
STYLE DESIGNATOR: SELF-LOCKING
•
HEAD DIAMETER: 0.203 INCHES NOMINAL IN
•
SURFACE TREATMENT: TIN OVERALL
•
THREAD DIRECTION: RIGHT-HAND NUT THREAD
•
THREAD LENGTH: 0.315 INCHES MINIMUM NUT THREAD IN
•
NOMINAL THREAD SIZE: 0.138 INCHES NUT THREAD IN
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER ALLOY
STYLE DESIGNATORSELF-LOCKING
OVERALL LENGTH0.385 INCHES MINIMUM AND 0.405 INCHES MAXIMUM IN
HEAD DIAMETER0.203 INCHES NOMINAL IN
SURFACE TREATMENTTIN OVERALL
THREAD DIRECTIONRIGHT-HAND NUT THREAD
THREAD LENGTH0.315 INCHES MINIMUM NUT THREAD IN
NOMINAL THREAD SIZE0.138 INCHES NUT THREAD IN
LOCKING FEATURESELF-CLINCHING HEAD
HEAD LENGTH0.090 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
82003CRB41Interchangeable
interchangeable cross-reference
interchangeable
82915-1Interchangeable
interchangeable cross-reference
interchangeable
82481-1Interchangeable
interchangeable cross-reference
interchangeable
8248-1Interchangeable
interchangeable cross-reference
interchangeable
MIL-H-43925Interchangeable
Spacer,visor Housing,flyer's Hel
interchangeable
5387.4-1555/2Interchangeable
Spacer,visor Housing,flyer's Hel
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is C-6689?
C-6689 is a CAPACITOR,FIXED,MICA DIELECTRIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace C-6689?
There are 14 known substitutes for C-6689: 82003CRB41, 82915-1, 82481-1 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for C-6689?
C-6689 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-01-083-9640. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026