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D4B4T — SHAFT,SHOULDERED

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

D4B4T: SHAFT,SHOULDERED.

The SHAFT,SHOULDERED is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY, end_similarity: NOT IDENTICAL, overall_length: 28.375 INCHES NOMINAL IN, surface_finish: 32.0 MICROINCHES, first_end_style: EXTERNALLY THREADED AND FLAT KEYWAY, second_end_style: EXTERNALLY THREADED AND FLAT KEYWAY. This part is cataloged in the U.S.

Government catalog under NSN 3040-01-121-2926, 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
D4B4T
NSN: 3040-01-121-2926
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 10613 — PENTAIR PUMP GROUP, INC. DBA FAIRBANKS MORSE PUMP (USA)
SPECIFICATIONS
materialNICKEL ALLOY
step_quantity9
end_similarityNOT IDENTICAL
overall_length28.375 INCHES NOMINAL IN
surface_finish32.0 MICROINCHES
first_end_styleEXTERNALLY THREADED AND FLAT KEYWAY
second_end_styleEXTERNALLY THREADED AND FLAT KEYWAY
first_end_diameter0.7810 INCHES NOMINAL IN
second_end_diameter1.1719 INCHES NOMINAL IN
largest_step_diameter1.563 INCHES NOMINAL IN
external_keyway_length0.6875 INCHES NOMINAL FIRST END IN
first_end_keyway_depth0.0937 INCHES NOMINAL IN
NSN3040-01-121-2926
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SHAFT,SHOULDERED TITLE COMPONENT PN D4B4T MFR SHAFT,SHOULDERED
KEY FEATURES
•
SURFACE FINISH: 32.0 MICROINCHES
•
SECOND END EXTERNAL THREAD LENGTH: 0.5625 INCHES NOMINAL IN
•
STEP QUANTITY: 9
•
FIRST END DIAMETER: 0.7810 INCHES NOMINAL IN
•
SECOND END DIAMETER: 1.1719 INCHES NOMINAL IN
•
LARGEST STEP DIAMETER: 1.563 INCHES NOMINAL IN
•
FIRST END EXTERNAL THREAD LENGTH: 0.6875 INCHES NOMINAL IN
•
FIRST END STYLE: EXTERNALLY THREADED AND FLAT KEYWAY
TECHNICAL CHARACTERISTICS
SURFACE FINISH32.0 MICROINCHES
SECOND END EXTERNAL THREAD LENGTH0.5625 INCHES NOMINAL IN
STEP QUANTITY9
FIRST END DIAMETER0.7810 INCHES NOMINAL IN
SECOND END DIAMETER1.1719 INCHES NOMINAL IN
LARGEST STEP DIAMETER1.563 INCHES NOMINAL IN
FIRST END EXTERNAL THREAD LENGTH0.6875 INCHES NOMINAL IN
FIRST END STYLEEXTERNALLY THREADED AND FLAT KEYWAY
SECOND END KEYWAY WIDTH0.1875 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE
SUBSTITUTES & CROSS-REFERENCES 2
99G3B-DReference document
Same NSN cross-reference
Reference document — Drawing number reference only
99G3B-D PIECE4Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is D4B4T?
D4B4T is a SHAFT,SHOULDERED.
What parts can replace D4B4T?
There are 2 known substitutes for D4B4T: 99G3B-D, 99G3B-D PIECE4. Substitute compatibility should be verified for your specific system.
What is the NSN for D4B4T?
D4B4T is cataloged in the U.S. Government catalog under NSN 3040-01-121-2926. 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.