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Technical Data Sheet
PartsTable / COMPONENT / 0.500-13UNC2B
0.500-13UNC2B ✓ 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 0.500-13UNC2B is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-343-8333, 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
0.500-13UNC2B
NSN: 5310-01-343-8333
FSC: 5310
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part Number0.500-13UNC2B
NSN5310-01-343-8333
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 0.500-13UNC2B · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: NSI B18.2.2, SAE GRADE 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
SURFACE TREATMENT: ZINC OVERALL
•
MATERIAL: STEEL OVERALL
•
THREAD CLASS: 2B
•
HARDNESS RATING: 23.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
•
THREAD QUANTITY PER INCH: 13
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
MATERIAL DOCUMENT AND CLASSIFICATIONNSI B18.2.2, SAE GRADE 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTZINC OVERALL
MATERIALSTEEL OVERALL
THREAD CLASS2B
HARDNESS RATING23.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
THREAD QUANTITY PER INCH13
SPECIAL FEATURESAISI C1110 ZINC PLATED; ANSI B18.2.2; SAE GRADE 5
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
0.50013UNC2BT1G4NSA/BDCInterchangeable
interchangeable cross-reference
interchangeable
803-2177525-S6XX-17Interchangeable
interchangeable cross-reference
interchangeable
688-1864 APPX 1Interchangeable
interchangeable cross-reference
interchangeable
122-2422395 PIECE 309Interchangeable
interchangeable cross-reference
interchangeable
1/2-13UNC-3B (M IL-B-837A GR 2)Interchangeable
interchangeable cross-reference
interchangeable
122-2557733 PC NO. 41Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 0.500-13UNC2B?
0.500-13UNC2B is a 0.500-13UNC2B.
What parts can replace 0.500-13UNC2B?
There are 15 known substitutes for 0.500-13UNC2B: 0.50013UNC2BT1G4NSA/BDC, 803-2177525-S6XX-17, 688-1864 APPX 1 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 0.500-13UNC2B?
0.500-13UNC2B is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-343-8333. 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