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PartsTable / COMPONENT / 5310PL1686599
5310PL1686599 ✓ 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

NUT,SELF-LOCKING,EXTENDED WASHER. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, lubrication: DRY FILM LUBRICANT, temp_rating: 450.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNJC. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-807-1473, 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
5310PL1686599
NSN: 5310-00-807-1473
FSC: 5310
CAGE: 9009H — JEDNOLITY INDEKS MATERIALOWY - UNIFORM MATERIAL INDEX (POL)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
lubricationDRY FILM LUBRICANT
temp_rating450.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNJC
overall_height0.125 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
hardness_rating49.0 ROCKWELL C MAXIMUM
locking_featurePREVAILING TORQUE ALL METAL DESIGN
special_featuresTHE ITEM IS A FLIGHT SAFETY CRITICAL AIRCRAFT PART (FSCAP).
thread_directionRIGHT-HAND
washer_thickness0.015 INCHES MINIMUM IN
NSN5310-00-807-1473
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5310PL1686599 · 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
•
NOMINAL THREAD SIZE: 0.164 INCHES IN
•
MATERIAL: STEEL OVERALL
•
THREAD DIRECTION: RIGHT-HAND
•
HARDNESS RATING: 49.0 ROCKWELL C MAXIMUM
•
WIDTH ACROSS FLATS: 0.213 INCHES MINIMUM AND 0.221 INCHES MAXIMUM IN
•
THREAD QUANTITY PER INCH: 32
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLEHEXAGON
NOMINAL THREAD SIZE0.164 INCHES IN
MATERIALSTEEL OVERALL
THREAD DIRECTIONRIGHT-HAND
HARDNESS RATING49.0 ROCKWELL C MAXIMUM
WIDTH ACROSS FLATS0.213 INCHES MINIMUM AND 0.221 INCHES MAXIMUM IN
OVERALL HEIGHT0.125 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH32
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD CLASS3B
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
134GT1011Interchangeable
interchangeable cross-reference
interchangeable
MIL-A-8625FInterchangeable
interchangeable cross-reference
interchangeable
NASM21042Interchangeable
interchangeable cross-reference
interchangeable
MS21042-4Interchangeable
interchangeable cross-reference
interchangeable
10373387Interchangeable
Same NIIN cross-reference
interchangeable
984019Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5310PL1686599?
5310PL1686599 is a NUT,SELF-LOCKING,EXTENDED WASHER.
What parts can replace 5310PL1686599?
There are 13 known substitutes for 5310PL1686599: 134GT1011, MIL-A-8625F, NASM21042 and 10 more. Substitute compatibility should be verified for your specific system.
Is 5310PL1686599 still available?
5310PL1686599 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