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306012103 — NUT,PLAIN,CONE SEAT,HEXAGON

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

306012103: NUT,PLAIN,CONE SEAT,HEXAGON.

The NUT,PLAIN,CONE SEAT,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: CONE SEAT, HEXAGON, nut_height: 0.625 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNF, cone_seat_angle: 60.0 DEGREES NOMINAL. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-388-8570, 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
306012103
NSN: 5310-01-388-8570
FSC: 5310 — Nuts and Washers
CAGE: 9Z677 — CROMWELL BUILDERS MANUFACTURING INC DBA JC.NET/CROMWELL/BUILDERS (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleCONE SEAT, HEXAGON
nut_height0.625 INCHES NOMINAL IN
thread_class2B
thread_seriesUNF
cone_seat_angle60.0 DEGREES NOMINAL
thread_directionRIGHT-HAND
width_across_flats0.813 INCHES NOMINAL IN
nominal_thread_size0.500 INCHES IN
thread_quantity_per_inch20
NSN5310-01-388-8570
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 306012103 · 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: 0.813 INCHES NOMINAL IN
•
THREAD SERIES: UNF
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.500 INCHES IN
•
CONE SEAT ANGLE: 60.0 DEGREES NOMINAL
•
NUT HEIGHT: 0.625 INCHES NOMINAL IN
•
NUT STYLE: CONE SEAT, HEXAGON
•
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.813 INCHES NOMINAL IN
THREAD SERIESUNF
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.500 INCHES IN
CONE SEAT ANGLE60.0 DEGREES NOMINAL
NUT HEIGHT0.625 INCHES NOMINAL IN
NUT STYLECONE SEAT, HEXAGON
THREAD CLASS2B
THREAD QUANTITY PER INCH20
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
06-12103Reference document
Same NSN cross-reference
Reference document — Secondary 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 306012103?
306012103 is a NUT,PLAIN,CONE SEAT,HEXAGON.
What parts can replace 306012103?
There is 1 known substitute for 306012103: 06-12103. Substitute compatibility should be verified for your specific system.
What is the NSN for 306012103?
306012103 is cataloged in the U.S. Government catalog under NSN 5310-01-388-8570. 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.