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SCB33340 ✓ 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,SLEEVE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1212 OVERALL, nut_style: SLEEVE, nut_length: 0.625 INCHES NOMINAL IN, thread_class: 2B, thread_length: 0.375 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, thread_series: UNIFIED NATIONAL COARSE (UNC). This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-498-8408, 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
SCB33340
NSN: 5310-00-498-8408
FSC: 5310
CAGE: 80063 — US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR (USA)
SPECIFICATIONS
materialSTEEL COMP 1212 OVERALL
nut_styleSLEEVE
nut_length0.625 INCHES NOMINAL IN
thread_class2B
thread_length0.375 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
surface_treatmentZINC OVERALL
nominal_thread_size0.190 INCHES IN
cross-sectional_shapeHEXAGONAL NUT
nut_width_across_flats0.562 INCHES NOMINAL IN
thread_quantity_per_inch24
NSN5310-00-498-8408
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SCB33340 · 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: SLEEVE
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD CLASS: 2B
•
CROSS-SECTIONAL SHAPE: HEXAGONAL NUT
•
MATERIAL DOCUMENT AND CLASSIFICATION: 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
•
NUT LENGTH: 0.625 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.190 INCHES IN
•
SURFACE TREATMENT: ZINC OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLESLEEVE
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS2B
CROSS-SECTIONAL SHAPEHEXAGONAL NUT
MATERIAL DOCUMENT AND CLASSIFICATION66 FED STD SINGLE MATERIAL RESPONSE OVERALL
NUT LENGTH0.625 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.190 INCHES IN
SURFACE TREATMENTZINC OVERALL
NUT WIDTH ACROSS FLATS0.562 INCHES NOMINAL IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
MS29513-021Interchangeable
interchangeable cross-reference
interchangeable
3113858Interchangeable
interchangeable cross-reference
interchangeable
MS29513-21Interchangeable
interchangeable cross-reference
interchangeable
05863Interchangeable
interchangeable cross-reference
interchangeable
105-0863Interchangeable
interchangeable cross-reference
interchangeable
105-0863-001Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SCB33340?
SCB33340 is a NUT,SLEEVE.
What parts can replace SCB33340?
There are 10 known substitutes for SCB33340: MS29513-021, 3113858, MS29513-21 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SCB33340?
SCB33340 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-498-8408. 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