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PartsTable / COMPONENT / SMB157254
SMB157254 ✓ 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,ECCENTRIC is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1018 OVERALL, overall_length: 1.200 INCHES NOMINAL IN, surface_finish: 63.0 MICROINCHES OUTSIDE DIAMETER, first_step_length: 0.169 INCHES NOMINAL IN, third_step_length: 0.375 INCHES NOMINAL IN, first_step_diameter: 0.375 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 5315-00-030-0430, 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
SMB157254
NSN: 5315-00-030-0430
FSC: 5315
CAGE: 80063 — US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR (USA)
SPECIFICATIONS
materialSTEEL COMP 1018 OVERALL
overall_length1.200 INCHES NOMINAL IN
surface_finish63.0 MICROINCHES OUTSIDE DIAMETER
first_step_length0.169 INCHES NOMINAL IN
third_step_length0.375 INCHES NOMINAL IN
first_step_diameter0.375 INCHES NOMINAL IN
internal_drive_styleSLOT
second_step_diameter0.1855 INCHES MINIMUM AND 0.1875 INCHES MAXIMUM IN
relief_under_head_length0.143 INCHES MINIMUM AND 0.153 INCHES MAXIMUM IN
relief_under_head_diameter0.186 INCHES MINIMUM AND 0.188 INCHES MAXIMUM IN
offset_distance_between_geometric_center_of_head_and_centerline_of_shank/shoulder0.031 INCHES NOMINAL IN
NSN5315-00-030-0430
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SMB157254 · 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
•
FIRST STEP DIAMETER: 0.375 INCHES NOMINAL IN
•
OFFSET DISTANCE BETWEEN GEOMETRIC CENTER OF HEAD AND CENTERLINE OF SHANK/SHOULDER: 0.031 INCHES NOMINAL IN
•
RELIEF UNDER HEAD LENGTH: 0.143 INCHES MINIMUM AND 0.153 INCHES MAXIMUM IN
•
FIRST STEP LENGTH: 0.169 INCHES NOMINAL IN
•
SURFACE FINISH: 63.0 MICROINCHES OUTSIDE DIAMETER
•
MATERIAL: STEEL COMP 1018 OVERALL
•
INTERNAL DRIVE STYLE: SLOT
TECHNICAL CHARACTERISTICS (FLIS)
FIRST STEP DIAMETER0.375 INCHES NOMINAL IN
OFFSET DISTANCE BETWEEN GEOMETRIC CENTER OF HEAD AND CENTERLINE OF SHANK/SHOULDER0.031 INCHES NOMINAL IN
RELIEF UNDER HEAD LENGTH0.143 INCHES MINIMUM AND 0.153 INCHES MAXIMUM IN
FIRST STEP LENGTH0.169 INCHES NOMINAL IN
OVERALL LENGTH1.200 INCHES NOMINAL IN
SURFACE FINISH63.0 MICROINCHES OUTSIDE DIAMETER
MATERIALSTEEL COMP 1018 OVERALL
INTERNAL DRIVE STYLESLOT
THIRD STEP LENGTH0.375 INCHES NOMINAL IN
SECOND STEP DIAMETER0.1855 INCHES MINIMUM AND 0.1875 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
5258-5Interchangeable
interchangeable cross-reference
interchangeable
21708Interchangeable
interchangeable cross-reference
interchangeable
B107.410 CAT 48 TY2CL5Interchangeable
interchangeable cross-reference
interchangeable
565HInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SMB157254?
SMB157254 is a PIN,ECCENTRIC.
What parts can replace SMB157254?
There are 4 known substitutes for SMB157254: 5258-5, 21708, B107.410 CAT 48 TY2CL5 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SMB157254?
SMB157254 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-030-0430. 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