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Technical Data Sheet
B-23521 ✓ 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

The COUPLING,SHAFT,FLEXIBLE is a the manufacturer industrial component. Key specifications include bore_shape: STRAIGHT BOTH ENDS, bore_length: 0.2810 INCHES NOMINAL BOTH ENDS IN, design_type: BELLOWS, bore_diameter: 0.1880 INCHES NOMINAL BOTH ENDS IN, overall_length: 0.810 INCHES NOMINAL IN, securing_method: THREADED HOLE(S) BOTH ENDS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 3010-00-824-2684, 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
B-23521
NSN: 3010-00-824-2684
FSC: 3010
CAGE: 07649 — SENIOR OPERATIONS LLC DBA METAL BELLOWS DIV METAL BELLOWS (USA)
SPECIFICATIONS
bore_shapeSTRAIGHT BOTH ENDS
bore_length0.2810 INCHES NOMINAL BOTH ENDS IN
design_typeBELLOWS
bore_diameter0.1880 INCHES NOMINAL BOTH ENDS IN
overall_length0.810 INCHES NOMINAL IN
securing_methodTHREADED HOLE(S) BOTH ENDS
bellows_materialSTEEL
outside_diameter0.500 INCHES NOMINAL IN
thread_size_designatorNO.4-40 BOTH ENDS
threaded_hole_locationBOTH ENDS: LOCATED ON PERIPHERY OF HUB
threaded_hole_quantity2 BOTH ENDS
nondefinitive_spec/std_data1 TYPE AND A STYLE
NSN3010-00-824-2684
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available COUPLING,SHAFT,FLEXIBLE TITLE COMPONENT PN B-23521 MFR COUPLING,SHAFT,FLEXIBL
KEY FEATURES
THREAD SIZE DESIGNATOR: NO.4-40 BOTH ENDS
BORE LENGTH: 0.2810 INCHES NOMINAL BOTH ENDS IN
BELLOWS MATERIAL: STEEL
BORE DIAMETER: 0.1880 INCHES NOMINAL BOTH ENDS IN
NONDEFINITIVE SPEC/STD DATA: 1 TYPE AND A STYLE
OUTSIDE DIAMETER: 0.500 INCHES NOMINAL IN
FURNISHED ITEMS AND QUANTITY: SETSCREW
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SIZE DESIGNATORNO.4-40 BOTH ENDS
BORE LENGTH0.2810 INCHES NOMINAL BOTH ENDS IN
BELLOWS MATERIALSTEEL
OVERALL LENGTH0.810 INCHES NOMINAL IN
BORE DIAMETER0.1880 INCHES NOMINAL BOTH ENDS IN
NONDEFINITIVE SPEC/STD DATA1 TYPE AND A STYLE
OUTSIDE DIAMETER0.500 INCHES NOMINAL IN
FURNISHED ITEMS AND QUANTITYSETSCREW
DESIGN TYPEBELLOWS
SECURING METHODTHREADED HOLE(S) BOTH ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
23-521Interchangeable
interchangeable cross-reference
interchangeable
3010-9010Interchangeable
interchangeable cross-reference
interchangeable
W2S4Interchangeable
interchangeable cross-reference
interchangeable
L291834-1Interchangeable
interchangeable cross-reference
interchangeable
MX-1554A/UInterchangeable
interchangeable cross-reference
interchangeable
10-910-2Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is B-23521?
B-23521 is a COUPLING,SHAFT,FLEXIBLE.
What parts can replace B-23521?
There are 12 known substitutes for B-23521: 23-521, 3010-9010, W2S4 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for B-23521?
B-23521 is cataloged in the Federal Logistics Information System (FLIS) under NSN 3010-00-824-2684. This indicates validated use in U.S. government and defense supply chains.
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