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D86588 — NUT,SELF-LOCKING,CONE SEAT,HEXAG

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

D86588: NUT,SELF-LOCKING,CONE SEAT,HEXAG.

NUT,SELF-LOCKING,CONE SEAT,HEXAG. Key specifications include nut_style: CONE SEAT, HEXAGON, nut_height: 0.535 INCHES MINIMUM AND 0.559 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNF, locking_feature: PREVAILING TORQUE ALL METAL DESIGN, thread_direction: RIGHT-HAND. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-086-0895, 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
D86588
NSN: 5310-01-086-0895
FSC: 5310 — Nuts and Washers
CAGE: 10988 — CNH INDUSTRIAL AMERICA LLC DBA CNH AMERICA (USA)
SPECIFICATIONS
nut_styleCONE SEAT, HEXAGON
nut_height0.535 INCHES MINIMUM AND 0.559 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNF
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
width_across_flats0.922 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN
nominal_thread_size0.625 INCHES IN
thread_quantity_per_inch18
NSN5310-01-086-0895
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: D86588 · 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: 0.922 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN
•
THREAD SERIES: UNF
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.625 INCHES IN
•
LOCKING FEATURE: PREVAILING TORQUE ALL METAL DESIGN
•
NUT HEIGHT: 0.535 INCHES MINIMUM AND 0.559 INCHES MAXIMUM IN
•
NUT STYLE: CONE SEAT, HEXAGON
•
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS
WIDTH ACROSS FLATS0.922 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN
THREAD SERIESUNF
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.625 INCHES IN
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
NUT HEIGHT0.535 INCHES MINIMUM AND 0.559 INCHES MAXIMUM IN
NUT STYLECONE SEAT, HEXAGON
THREAD CLASS2B
THREAD QUANTITY PER INCH18
SUBSTITUTES & CROSS-REFERENCES 2
53163Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
C5880Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is D86588?
D86588 is a NUT,SELF-LOCKING,CONE SEAT,HEXAG.
What parts can replace D86588?
There are 2 known substitutes for D86588: 53163, C5880. Substitute compatibility should be verified for your specific system.
What is the NSN for D86588?
D86588 is cataloged in the U.S. Government catalog under NSN 5310-01-086-0895. 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.