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BK850427110 — SHAFT,SHOULDERED

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

BK850427110: SHAFT,SHOULDERED.

The SHAFT,SHOULDERED is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, end_similarity: NOT IDENTICAL, overall_length: 1.768 INCHES MINIMUM AND 1.788 INCHES MAXIMUM IN, first_end_style: EXTERNAL THREADED, second_end_style: UNTHREADED CROSS DRILLED, special_features: UNDERWATER LIFE SUPPORT IAW NAVSEA INSTRUCTION 10560.2B. This part is cataloged in the U.S.

Government catalog under NSN 3040-01-347-4427, 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
BK850427110
NSN: 3040-01-347-4427
FSC: 3040 — Miscellaneous Power Transmission Equipment
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
materialCOPPER ALLOY
end_similarityNOT IDENTICAL
overall_length1.768 INCHES MINIMUM AND 1.788 INCHES MAXIMUM IN
first_end_styleEXTERNAL THREADED
second_end_styleUNTHREADED CROSS DRILLED
special_featuresUNDERWATER LIFE SUPPORT IAW NAVSEA INSTRUCTION 10560.2B
first_end_diameter0.4260 INCHES MINIMUM AND 0.4290 INCHES MAXIMUM IN
end_item_identificationMK21MOD1 DIVING HELMET-SUPERLITE-AIR/MIXED
second_end_hole_diameter0.0920 INCHES MINIMUM AND 0.0950 INCHES MAXIMUM IN
criticality_code_justificationFEAT
NSN3040-01-347-4427
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SHAFT,SHOULDERED TITLE COMPONENT PN BK850427110 MFR SHAFT,SHOULDERED
KEY FEATURES
•
SECOND END HOLE DIAMETER: 0.0920 INCHES MINIMUM AND 0.0950 INCHES MAXIMUM IN
•
FIRST END DIAMETER: 0.4260 INCHES MINIMUM AND 0.4290 INCHES MAXIMUM IN
•
FIRST END STYLE: EXTERNAL THREADED
•
CRITICALITY CODE JUSTIFICATION: FEAT
•
END SIMILARITY: NOT IDENTICAL
•
SECOND END STYLE: UNTHREADED CROSS DRILLED
TECHNICAL CHARACTERISTICS
SECOND END HOLE DIAMETER0.0920 INCHES MINIMUM AND 0.0950 INCHES MAXIMUM IN
FIRST END DIAMETER0.4260 INCHES MINIMUM AND 0.4290 INCHES MAXIMUM IN
FIRST END STYLEEXTERNAL THREADED
CRITICALITY CODE JUSTIFICATIONFEAT
OVERALL LENGTH1.768 INCHES MINIMUM AND 1.788 INCHES MAXIMUM IN
END SIMILARITYNOT IDENTICAL
SPECIAL FEATURESUNDERWATER LIFE SUPPORT IAW NAVSEA INSTRUCTION 10560.2B
SECOND END STYLEUNTHREADED CROSS DRILLED
END ITEM IDENTIFICATIONMK21MOD1 DIVING HELMET-SUPERLITE-AIR/MIXED
MATERIALCOPPER ALLOY
SUBSTITUTES & CROSS-REFERENCES 2
550-057Reference document
Same NSN cross-reference
Reference document — Secondary reference
6318288Same 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 BK850427110?
BK850427110 is a SHAFT,SHOULDERED.
What parts can replace BK850427110?
There are 2 known substitutes for BK850427110: 550-057, 6318288. Substitute compatibility should be verified for your specific system.
What is the NSN for BK850427110?
BK850427110 is cataloged in the U.S. Government catalog under NSN 3040-01-347-4427. 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.