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7287639 — BASE,MAST

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

7287639: BASE,MAST.

The BASE,MAST is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304, thread_class: 3B, overall_length: 6.000 INCHES NOMINAL IN, mounting_method: UNTHREADED HOLE(S) AND THREADED HOLE(S), overall_diameter: 7.250 INCHES NOMINAL IN, special_features: KNOWN AS HOIST CYLINDER BASE 6.00 DUTCHMAN. This part is cataloged in the U.S.

Government catalog under NSN 5985-01-487-3197, 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
7287639
NSN: 5985-01-487-3197
FSC: 5985 — Antennas, Waveguides, and Related Equipment
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL COMP 304
thread_class3B
overall_length6.000 INCHES NOMINAL IN
mounting_methodUNTHREADED HOLE(S) AND THREADED HOLE(S)
overall_diameter7.250 INCHES NOMINAL IN
special_featuresKNOWN AS HOIST CYLINDER BASE 6.00 DUTCHMAN
basic_shape_styleCYLINDRICAL
mounting_hole_typePLAIN
mounting_hole_diameter0.660 INCHES NOMINAL IN
end_item_identificationSEAWOLF CLASS SSN
mounting_facility_quantity12
mounting_facility_circle_radius5.750 INCHES NOMINAL IN
NSN5985-01-487-3197
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available BASE,MAST TITLE COMPONENT PN 7287639 MFR BASE,MAST
KEY FEATURES
•
MOUNTING FACILITY QUANTITY: 12
•
OVERALL DIAMETER: 7.250 INCHES NOMINAL IN
•
MOUNTING FACILITY CIRCLE RADIUS: 5.750 INCHES NOMINAL IN
•
MOUNTING METHOD: UNTHREADED HOLE(S) AND THREADED HOLE(S)
•
MOUNTING HOLE DIAMETER: 0.660 INCHES NOMINAL IN
•
BASIC SHAPE STYLE: CYLINDRICAL
TECHNICAL CHARACTERISTICS
MOUNTING FACILITY QUANTITY12
OVERALL DIAMETER7.250 INCHES NOMINAL IN
MOUNTING FACILITY CIRCLE RADIUS5.750 INCHES NOMINAL IN
MOUNTING METHODUNTHREADED HOLE(S) AND THREADED HOLE(S)
MOUNTING HOLE DIAMETER0.660 INCHES NOMINAL IN
OVERALL LENGTH6.000 INCHES NOMINAL IN
BASIC SHAPE STYLECYLINDRICAL
SPECIAL FEATURESKNOWN AS HOIST CYLINDER BASE 6.00 DUTCHMAN
THREAD CLASS3B
END ITEM IDENTIFICATIONSEAWOLF CLASS SSN
OTHER ITEMS IN FSC 5985 — Antennas, Waveguides, and Related Equipment
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5985-00-001-1854 5985-00-001-1862 5985-00-001-1869 5985-00-001-1870 5985-00-001-1871 5985-00-001-1874 5985-00-001-1875 5985-00-001-1876
SUBSTITUTES & CROSS-REFERENCES 1
7287639-1Same 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 7287639?
7287639 is a BASE,MAST.
What parts can replace 7287639?
There is 1 known substitute for 7287639: 7287639-1. Substitute compatibility should be verified for your specific system.
What is the NSN for 7287639?
7287639 is cataloged in the U.S. Government catalog under NSN 5985-01-487-3197. 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.