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2B1-728 — SHAFT,STRAIGHT

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

2B1-728: SHAFT,STRAIGHT.

The SHAFT,STRAIGHT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303SE, end_similarity: NOT IDENTICAL, overall_length: 1.250 INCHES NOMINAL IN, surface_finish: 63.0 MICROINCHES, first_end_style: PLAIN, second_end_style: CIRCULAR GROOVED. This part is cataloged in the U.S.

Government catalog under NSN 3040-00-678-6427, 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
2B1-728
NSN: 3040-00-678-6427
NIINs: 006786427, 011843754
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 4W146 — SMART MACHINES, INC. DBA BARKER AND WILLIAMSON (USA)
SPECIFICATIONS
materialSTEEL COMP 303SE
end_similarityNOT IDENTICAL
overall_length1.250 INCHES NOMINAL IN
surface_finish63.0 MICROINCHES
first_end_stylePLAIN
second_end_styleCIRCULAR GROOVED
first_end_diameter0.2490 INCHES NOMINAL IN
second_end_diameter0.2490 INCHES NOMINAL IN
second_end_groove_width0.0280 INCHES NOMINAL IN
second_end_groove_diameter0.2300 INCHES NOMINAL IN
second_end_distance_from_end_to_groove0.065 INCHES NOMINAL IN
NSN3040-00-678-6427
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SHAFT,STRAIGHT TITLE COMPONENT PN 2B1-728 MFR SHAFT,STRAIGHT
KEY FEATURES
•
SURFACE FINISH: 63.0 MICROINCHES
•
FIRST END DIAMETER: 0.2490 INCHES NOMINAL IN
•
SECOND END DIAMETER: 0.2490 INCHES NOMINAL IN
•
FIRST END STYLE: PLAIN
•
SECOND END GROOVE DIAMETER: 0.2300 INCHES NOMINAL IN
•
END SIMILARITY: NOT IDENTICAL
•
SECOND END GROOVE WIDTH: 0.0280 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES
FIRST END DIAMETER0.2490 INCHES NOMINAL IN
SECOND END DIAMETER0.2490 INCHES NOMINAL IN
FIRST END STYLEPLAIN
OVERALL LENGTH1.250 INCHES NOMINAL IN
SECOND END GROOVE DIAMETER0.2300 INCHES NOMINAL IN
END SIMILARITYNOT IDENTICAL
SECOND END GROOVE WIDTH0.0280 INCHES NOMINAL IN
SECOND END DISTANCE FROM END TO GROOVE0.065 INCHES NOMINAL IN
SECOND END STYLECIRCULAR GROOVED
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2B1-728?
2B1-728 is a SHAFT,STRAIGHT.
What is the NSN for 2B1-728?
2B1-728 is cataloged in the U.S. Government catalog under NSN 3040-00-678-6427. 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.