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Technical Data Sheet
PartsTable / COMPONENT / 853686
853686 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The NUT,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, nut_height: 0.234 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), locking_feature: PREVAILING TORQUE ALL METAL DESIGN OR PREVAILING TORQUE WITH NONMETALLIC INSERT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-266-4461, 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
853686
NSN: 5310-00-266-4461
FSC: 5310
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.234 INCHES NOMINAL IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
locking_featurePREVAILING TORQUE ALL METAL DESIGN OR PREVAILING TORQUE WITH NONMETALLIC INSERT
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OR ZINC OVERALL
width_across_flats0.344 INCHES NOMINAL IN
nominal_thread_size0.164 INCHES IN
bearing_surface_typeWASHER FACED
thread_quantity_per_inch32
NSN5310-00-266-4461
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 853686 · 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
•
NUT STYLE: HEXAGON
•
WIDTH ACROSS FLATS: 0.344 INCHES NOMINAL IN
•
NUT HEIGHT: 0.234 INCHES NOMINAL IN
•
BEARING SURFACE TYPE: WASHER FACED
•
THREAD QUANTITY PER INCH: 32
•
NOMINAL THREAD SIZE: 0.164 INCHES IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLEHEXAGON
WIDTH ACROSS FLATS0.344 INCHES NOMINAL IN
NUT HEIGHT0.234 INCHES NOMINAL IN
BEARING SURFACE TYPEWASHER FACED
THREAD QUANTITY PER INCH32
NOMINAL THREAD SIZE0.164 INCHES IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
MATERIALSTEEL OVERALL
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN OR PREVAILING TORQUE WITH NONMETALLIC INSERT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
C30003800Interchangeable
interchangeable cross-reference
interchangeable
8480Interchangeable
interchangeable cross-reference
interchangeable
F22NM82Interchangeable
interchangeable cross-reference
interchangeable
188036Interchangeable
interchangeable cross-reference
interchangeable
8825442-113Interchangeable
interchangeable cross-reference
interchangeable
PC315Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 853686?
853686 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 853686?
There are 20 known substitutes for 853686: C30003800, 8480, F22NM82 and 17 more. Substitute compatibility should be verified for your specific system.
Is 853686 still available?
853686 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026