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Technical Data Sheet
PartsTable / COMPONENT / SM-B-157440
SM-B-157440 ✓ 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 510 OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-588-0943, 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
SM-B-157440
NSN: 5310-00-588-0943
FSC: 5310
CAGE: 80063 — US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR (USA)
SPECIFICATIONS
materialCOPPER ALLOY 510 OVERALL
NSN5310-00-588-0943
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SM-B-157440 · 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
•
MATERIAL: COPPER ALLOY 510 OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER ALLOY 510 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
4LR1391P3X339Interchangeable
interchangeable cross-reference
interchangeable
5719-1Interchangeable
interchangeable cross-reference
interchangeable
709601Interchangeable
interchangeable cross-reference
interchangeable
18331-1Interchangeable
interchangeable cross-reference
interchangeable
PL P2-360 PART 6AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SM-B-157440?
SM-B-157440 is a NUT,PLAIN,HEXAGON.
What parts can replace SM-B-157440?
There are 5 known substitutes for SM-B-157440: 4LR1391P3X339, 5719-1, 709601 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SM-B-157440?
SM-B-157440 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-588-0943. 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