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PL53 ✓ 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

RESISTOR,VARIABLE,WIRE WOUND,NON. Key specifications include material: STEEL CORROSION RESISTING OVERALL, thickness: 0.156 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN, head_style: FLAT CHAMFER, key_height: 0.308 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN, head_height: 0.125 INCHES NOMINAL IN, thread_class: 2A A. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-010-3906, 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
PL53
NSN: 5315-00-010-3906
FSC: 5315
CAGE: 66289 — WISCONSIN MOTORS, LLC (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
thickness0.156 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN
head_styleFLAT CHAMFER
key_height0.308 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
head_height0.125 INCHES NOMINAL IN
thread_class2A A
head_diameter0.250 INCHES NOMINAL IN
thread_length0.156 INCHES MINIMUM IN
shoulder_shapeROUND FIRST SHOULDER
circle_diameter0.740 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
fastener_length0.531 INCHES NOMINAL IN
hardness_rating10.0 ROCKWELL C MINIMUM OVERALL
NSN5315-00-010-3906
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: PL53 · 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
•
KEY SIZE DESIGNATION: WOODRUFF 8
•
STYLE DESIGNATOR: ROUND BOTTOM
•
CIRCLE DIAMETER: 0.740 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
•
KEY HEIGHT: 0.308 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
•
MATERIAL: STEEL OVERALL
•
HARDNESS RATING: 10.0 ROCKWELL C MINIMUM OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
STARTING EDGE SHAPE: STRAIGHT
TECHNICAL CHARACTERISTICS (FLIS)
KEY SIZE DESIGNATIONWOODRUFF 8
STYLE DESIGNATORROUND BOTTOM
CIRCLE DIAMETER0.740 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
KEY HEIGHT0.308 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
MATERIALSTEEL OVERALL
HARDNESS RATING10.0 ROCKWELL C MINIMUM OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
STARTING EDGE SHAPESTRAIGHT
THICKNESS0.156 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
106751Interchangeable
interchangeable cross-reference
interchangeable
5195085Interchangeable
interchangeable cross-reference
interchangeable
12910Interchangeable
interchangeable cross-reference
interchangeable
8A91001Interchangeable
interchangeable cross-reference
interchangeable
30023Interchangeable
interchangeable cross-reference
interchangeable
A848X77Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is PL53?
PL53 is a RESISTOR,VARIABLE,WIRE WOUND,NON.
What parts can replace PL53?
There are 23 known substitutes for PL53: 106751, 5195085, 12910 and 20 more. Substitute compatibility should be verified for your specific system.
Is PL53 still available?
PL53 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026