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PartsTable / COMPONENT / SMB433049
SMB433049 ✓ 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,PLAIN,HEXAGON is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 360 OVERALL, nut_style: HEXAGON, nut_height: 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNF, thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-889-2525, 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
SMB433049
NSN: 5310-00-889-2525
FSC: 5310
CAGE: 80063 — US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR (USA)
SPECIFICATIONS
materialCOPPER ALLOY 360 OVERALL
nut_styleHEXAGON
nut_height0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNF
thread_directionRIGHT-HAND
surface_treatmentCADMIUM OVERALL
width_across_flats0.812 INCHES NOMINAL IN
nominal_thread_size0.625 INCHES IN
bearing_surface_typeWASHER FACED
bearing_surface_finish125.0 MICROINCHES
thread_quantity_per_inch18
NSN5310-00-889-2525
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SMB433049 · 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
•
NUT HEIGHT: 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
•
WIDTH ACROSS FLATS: 0.812 INCHES NOMINAL IN
•
NUT STYLE: HEXAGON
•
THREAD CLASS: 2B
•
NOMINAL THREAD SIZE: 0.625 INCHES IN
•
THREAD QUANTITY PER INCH: 18
•
BEARING SURFACE FINISH: 125.0 MICROINCHES
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
NUT HEIGHT0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
WIDTH ACROSS FLATS0.812 INCHES NOMINAL IN
NUT STYLEHEXAGON
THREAD CLASS2B
NOMINAL THREAD SIZE0.625 INCHES IN
THREAD QUANTITY PER INCH18
BEARING SURFACE FINISH125.0 MICROINCHES
BEARING SURFACE TYPEWASHER FACED
THREAD SERIESUNF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
P95316Interchangeable
interchangeable cross-reference
interchangeable
NP134Interchangeable
interchangeable cross-reference
interchangeable
NP316Interchangeable
interchangeable cross-reference
interchangeable
53-050942-1Interchangeable
interchangeable cross-reference
interchangeable
100655Interchangeable
interchangeable cross-reference
interchangeable
A16087-001Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SMB433049?
SMB433049 is a NUT,PLAIN,HEXAGON.
What parts can replace SMB433049?
There are 13 known substitutes for SMB433049: P95316, NP134, NP316 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SMB433049?
SMB433049 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-889-2525. 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