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B64681 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

SEAL ASSEMBLY,SHAFT,SPRING LOADE. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, head_height: 0.455 INCHES MINIMUM AND 0.483 INCHES MAXIMUM IN, thread_class: 2A A, thread_length: 2.000 INCHES MAXIMUM IN, fastener_length: 1.938 INCHES MINIMUM AND 2.000 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 4320-01-286-2308, 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
B64681
NSN: 4320-01-286-2308
FSC: 4320
CAGE: 71724 — JOHN CRANE, INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
head_height0.455 INCHES MINIMUM AND 0.483 INCHES MAXIMUM IN
thread_class2A A
thread_length2.000 INCHES MAXIMUM IN
fastener_length1.938 INCHES MINIMUM AND 2.000 INCHES MAXIMUM IN
hardness_rating23.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL
thread_directionRIGHT-HAND
surface_treatmentCADMIUM AND CHROMATE OVERALL
width_between_flats1.100 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN
center_hole_diameter6.202 INCHES MINIMUM AND 6.248 INCHES MAXIMUM IN
cross-sectional_height0.269 INCHES MINIMUM AND 0.281 INCHES MAXIMUM IN
NSN4320-01-286-2308
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SEAL ASSEMBLY,SHAFT,SPRING LOADE TITLE COMPONENT PN B64681 MFR SEAL ASSEMBLY,SHAFT,SP
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
S7-65Interchangeable
interchangeable cross-reference
interchangeable
ZB287-1004P65Interchangeable
interchangeable cross-reference
interchangeable
AN6227B65Interchangeable
interchangeable cross-reference
interchangeable
S765AInterchangeable
interchangeable cross-reference
interchangeable
1837-100Interchangeable
interchangeable cross-reference
interchangeable
CF-SP-15966NP89MCMInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B64681?
B64681 is a SEAL ASSEMBLY,SHAFT,SPRING LOADE.
What parts can replace B64681?
There are 17 known substitutes for B64681: S7-65, ZB287-1004P65, AN6227B65 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B64681?
B64681 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4320-01-286-2308. 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