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Technical Data Sheet
PartsTable / COMPONENT / SM-B-684571
SM-B-684571 ✓ 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,SPRING TENSION is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, hole_diameter: 0.195 INCHES NOMINAL0.195 INCHES NOMINAL IN, overall_height: 0.013 INCHES NOMINAL0.013 INCHES NOMINAL IN, outside_diameter: 0.236 INCHES NOMINAL0.236 INCHES NOMINAL IN, material_thickness: 0.005 INCHES NOMINAL0.005 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 5310-01-029-6890, 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-684571
NSN: 5310-01-029-6890
FSC: 5310
CAGE: 80063 — US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
hole_diameter0.195 INCHES NOMINAL0.195 INCHES NOMINAL IN
overall_height0.013 INCHES NOMINAL0.013 INCHES NOMINAL IN
outside_diameter0.236 INCHES NOMINAL0.236 INCHES NOMINAL IN
material_thickness0.005 INCHES NOMINAL0.005 INCHES NOMINAL IN
NSN5310-01-029-6890
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SM-B-684571 · 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 THICKNESS: 0.005 INCHES NOMINAL0.005 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY OVERALL
•
HOLE DIAMETER: 0.195 INCHES NOMINAL0.195 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 0.236 INCHES NOMINAL0.236 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL THICKNESS0.005 INCHES NOMINAL0.005 INCHES NOMINAL IN
OVERALL HEIGHT0.013 INCHES NOMINAL0.013 INCHES NOMINAL IN
MATERIALCOPPER ALLOY OVERALL
HOLE DIAMETER0.195 INCHES NOMINAL0.195 INCHES NOMINAL IN
OUTSIDE DIAMETER0.236 INCHES NOMINAL0.236 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
1994Interchangeable
interchangeable cross-reference
interchangeable
AA51123-D2Interchangeable
interchangeable cross-reference
interchangeable
A-A-51123Interchangeable
interchangeable cross-reference
interchangeable
352C596G03Interchangeable
interchangeable cross-reference
interchangeable
JHP24-88Interchangeable
interchangeable cross-reference
interchangeable
1272Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SM-B-684571?
SM-B-684571 is a WASHER,SPRING TENSION.
What parts can replace SM-B-684571?
There are 13 known substitutes for SM-B-684571: 1994, AA51123-D2, A-A-51123 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SM-B-684571?
SM-B-684571 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-029-6890. 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