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PartsTable / COMPONENT / SMB148705
SMB148705 ✓ 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 PIN,GROOVED,HEADED is a the manufacturer industrial component. Key specifications include height: 0.062 INCHES NOMINAL IN, diameter: 0.187 INCHES NOMINAL IN, material: STEEL COMP 303 OVERALL, head_style: FLAT, undercut_width: 0.050 INCHES NOMINAL IN, first_end_style: SQUARE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-393-1937, 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
SMB148705
NSN: 5315-00-393-1937
FSC: 5315
CAGE: 80063 — US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR (USA)
SPECIFICATIONS
height0.062 INCHES NOMINAL IN
diameter0.187 INCHES NOMINAL IN
materialSTEEL COMP 303 OVERALL
head_styleFLAT
undercut_width0.050 INCHES NOMINAL IN
first_end_styleSQUARE
effective_length0.153 INCHES NOMINAL IN
style_designatorGROOVE
pin_head_diameter0.375 INCHES NOMINAL IN
surface_treatmentPASSIVATE OVERALL
under_head_length0.281 INCHES NOMINAL IN
undercut_diameter0.147 INCHES NOMINAL IN
NSN5315-00-393-1937
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SMB148705 · 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
•
DIAMETER: 0.187 INCHES NOMINAL IN
•
UNDER HEAD LENGTH: 0.281 INCHES NOMINAL IN
•
EFFECTIVE LENGTH: 0.153 INCHES NOMINAL IN
•
HEIGHT: 0.062 INCHES NOMINAL IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
HEAD STYLE: FLAT
•
UNDERCUT WIDTH: 0.050 INCHES NOMINAL IN
•
FIRST END STYLE: SQUARE
TECHNICAL CHARACTERISTICS (FLIS)
DIAMETER0.187 INCHES NOMINAL IN
UNDER HEAD LENGTH0.281 INCHES NOMINAL IN
EFFECTIVE LENGTH0.153 INCHES NOMINAL IN
HEIGHT0.062 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
HEAD STYLEFLAT
UNDERCUT WIDTH0.050 INCHES NOMINAL IN
FIRST END STYLESQUARE
PIN HEAD DIAMETER0.375 INCHES NOMINAL IN
MATERIALSTEEL COMP 303 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
53426Interchangeable
interchangeable cross-reference
interchangeable
45511Interchangeable
interchangeable cross-reference
interchangeable
40559Interchangeable
interchangeable cross-reference
interchangeable
TABLE 15, 1008Interchangeable
interchangeable cross-reference
interchangeable
L210A0:B10039Interchangeable
interchangeable cross-reference
interchangeable
381-8002P3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SMB148705?
SMB148705 is a PIN,GROOVED,HEADED.
What parts can replace SMB148705?
There are 6 known substitutes for SMB148705: 53426, 45511, 40559 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SMB148705?
SMB148705 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-393-1937. 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