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MA219-21074 — NUT,PLAIN,CONE SEAT,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

MA219-21074: NUT,PLAIN,CONE SEAT,HEXAGON.

The NUT,PLAIN,CONE SEAT,HEXAGON is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, nut_style: CONE SEAT, HEXAGON, nut_height: 0.250 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), cone_seat_angle: 30.0 DEGREES NOMINAL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-099-0383, 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
MA219-21074
NSN: 5310-01-099-0383
FSC: 5310 — Nuts and Washers
CAGE: 34623 — AM GENERAL LLC (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
nut_styleCONE SEAT, HEXAGON
nut_height0.250 INCHES NOMINAL IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
cone_seat_angle30.0 DEGREES NOMINAL
thread_directionRIGHT-HAND
surface_treatmentNICKEL OVERALL
width_across_flats0.250 INCHES NOMINAL IN
nominal_thread_size0.164 INCHES IN
thread_quantity_per_inch32
NSN5310-01-099-0383
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: MA219-21074 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
WIDTH ACROSS FLATS: 0.250 INCHES NOMINAL IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.164 INCHES IN
•
CONE SEAT ANGLE: 30.0 DEGREES NOMINAL
•
NUT HEIGHT: 0.250 INCHES NOMINAL IN
•
SURFACE TREATMENT: NICKEL OVERALL
•
NUT STYLE: CONE SEAT, HEXAGON
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.250 INCHES NOMINAL IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.164 INCHES IN
CONE SEAT ANGLE30.0 DEGREES NOMINAL
NUT HEIGHT0.250 INCHES NOMINAL IN
SURFACE TREATMENTNICKEL OVERALL
NUT STYLECONE SEAT, HEXAGON
THREAD CLASS2B
THREAD QUANTITY PER INCH32
SUBSTITUTES & CROSS-REFERENCES 1
31551Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
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 MA219-21074?
MA219-21074 is a NUT,PLAIN,CONE SEAT,HEXAGON.
What parts can replace MA219-21074?
There is 1 known substitute for MA219-21074: 31551. Substitute compatibility should be verified for your specific system.
What is the NSN for MA219-21074?
MA219-21074 is cataloged in the U.S. Government catalog under NSN 5310-01-099-0383. 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.