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PartsTable / COMPONENT / 5310-99-606
5310-99-606 ✓ 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 TAB WASHER is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: CAP, thickness: 0.020 INCHES NOMINAL IN, nut_height: 1.000 INCHES NOMINAL IN, thread_class: 2B, hole_diameter: 0.203 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-452-8243, 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
5310-99-606
NSN: 5310-00-452-8243
FSC: 5310
CAGE: 99995 — NATO STOCK NUMBER ASSIGNED BY ANOTHER NATION
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleCAP
thickness0.020 INCHES NOMINAL IN
nut_height1.000 INCHES NOMINAL IN
thread_class2B
hole_diameter0.203 INCHES NOMINAL IN
thread_seriesUNF
overall_diameter0.382 INCHES NOMINAL IN
special_featuresCONTAINS TWO LOCKWIRE HOLES,180 DEGREES APART
thread_directionRIGHT-HAND
width_across_flats0.435 INCHES NOMINAL IN
nominal_thread_size0.500 INCHES IN
NSN5310-00-452-8243
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5310-99-606 · 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
•
THREAD DIRECTION: RIGHT-HAND
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
•
BEARING SURFACE TYPE: WASHER FACED
•
THREAD QUANTITY PER INCH: 28
•
THREAD SERIES: UNF
•
THREAD CLASS: 2B
•
NUT STYLE: HEXAGON
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
NOMINAL THREAD SIZE0.250 INCHES IN
BEARING SURFACE TYPEWASHER FACED
THREAD QUANTITY PER INCH28
SPECIAL FEATURESCONTAINS TWO LOCKWIRE HOLES,180 DEGREES APART
THREAD SERIESUNF
THREAD CLASS2B
NUT STYLEHEXAGON
WIDTH ACROSS FLATS0.435 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
5310-99-606Interchangeable
interchangeable cross-reference
interchangeable
688-147Interchangeable
interchangeable cross-reference
interchangeable
755-12Interchangeable
interchangeable cross-reference
interchangeable
STD348-3Interchangeable
interchangeable cross-reference
interchangeable
842-42Interchangeable
interchangeable cross-reference
interchangeable
837-125Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5310-99-606?
5310-99-606 is a TAB WASHER.
What parts can replace 5310-99-606?
There are 7 known substitutes for 5310-99-606: 5310-99-606, 688-147, 755-12 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5310-99-606?
5310-99-606 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-452-8243. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026