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Technical Data Sheet
PartsTable / COMPONENT / SMB157017-4
SMB157017-4 ✓ 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 WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, thickness: 0.023 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN, hole_diameter: 0.1905 INCHES MINIMUM AND 0.1945 INCHES MAXIMUM IN, overall_diameter: 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-595-6653, 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
SMB157017-4
NSN: 5310-00-595-6653
FSC: 5310
CAGE: 80063 — US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
thickness0.023 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN
hole_diameter0.1905 INCHES MINIMUM AND 0.1945 INCHES MAXIMUM IN
overall_diameter0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-00-595-6653
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SMB157017-4 · 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
•
THICKNESS: 0.023 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN
•
MATERIAL: COPPER ALLOY OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
CENTER HOLE SHAPE STYLE: ROUND
•
OVERALL DIAMETER: 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
•
HOLE DIAMETER: 0.1905 INCHES MINIMUM AND 0.1945 INCHES MAXIMUM IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
TECHNICAL CHARACTERISTICS (FLIS)
THICKNESS0.023 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN
MATERIALCOPPER ALLOY OVERALL
PERIPHERAL SHAPE STYLEROUND
CENTER HOLE SHAPE STYLEROUND
OVERALL DIAMETER0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM IN
HOLE DIAMETER0.1905 INCHES MINIMUM AND 0.1945 INCHES MAXIMUM IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
4SBWInterchangeable
interchangeable cross-reference
interchangeable
JH-2Interchangeable
interchangeable cross-reference
interchangeable
155470Interchangeable
interchangeable cross-reference
interchangeable
302-E-7361Interchangeable
interchangeable cross-reference
interchangeable
AC2620Interchangeable
interchangeable cross-reference
interchangeable
74-S-812Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SMB157017-4?
SMB157017-4 is a WASHER,FLAT.
What parts can replace SMB157017-4?
There are 12 known substitutes for SMB157017-4: 4SBW, JH-2, 155470 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SMB157017-4?
SMB157017-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-595-6653. 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