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A520 ✓ 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 SHIELDING BEAD,ELECTRONIC is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY, nut_style: SLOTTED, HEXAGON, body_width: 1.200 INCHES NOMINAL IN, nut_height: 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN, body_height: 0.650 INCHES MAXIMUM IN, body_length: 1.800 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 5315-00-229-0549, 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
A520
NSN: 5315-00-229-0549
FSC: 5315
CAGE: 00141 — ROLLER BEARING CO OF AMERICA, INC DIV PIC DESIGN (USA)
SPECIFICATIONS
materialNICKEL ALLOY
nut_styleSLOTTED, HEXAGON
body_width1.200 INCHES NOMINAL IN
nut_height0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN
body_height0.650 INCHES MAXIMUM IN
body_length1.800 INCHES NOMINAL IN
thread_class2B
thread_seriesUN
overall_length1.125 INCHES NOMINAL IN
drive_end_shapeSQUARE SECOND END EXTERNAL
overall_diameter16.719 INCHES NOMINAL IN
special_featuresFERRITE MATERIAL; 0.120 IN. MIN TO 0.128 IN. MAX LG; 0.130 IN. MIN TO 0.150 IN. MAX DIA; CENTER THRU HOLE,0.041 IN. MIN TO 0.081 IN. MAX DIA IN
NSN5315-00-229-0549
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: A520 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
356134SInterchangeable
interchangeable cross-reference
interchangeable
12686Interchangeable
interchangeable cross-reference
interchangeable
8EJW12Interchangeable
interchangeable cross-reference
interchangeable
A504Interchangeable
interchangeable cross-reference
interchangeable
2995348Interchangeable
interchangeable cross-reference
interchangeable
A520Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A520?
A520 is a SHIELDING BEAD,ELECTRONIC.
What parts can replace A520?
There are 10 known substitutes for A520: 356134S, 12686, 8EJW12 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A520?
A520 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-229-0549. 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