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Technical Data Sheet
PartsTable / COMPONENT / 57K3215
57K3215 ✓ 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,SHOULDERED is a the manufacturer industrial component. Key specifications include color: BLACK OVERALL, material: STEEL COMP 1009 OR STEEL OVERALL, hole_diameter: 0.500 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN, overall_height: 0.185 INCHES NOMINAL IN, shoulder_height: 0.105 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN, outside_diameter: 1.240 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 5310-01-433-7230, 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
57K3215
NSN: 5310-01-433-7230
FSC: 5310
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
colorBLACK OVERALL
materialSTEEL COMP 1009 OR STEEL OVERALL
hole_diameter0.500 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
overall_height0.185 INCHES NOMINAL IN
shoulder_height0.105 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
outside_diameter1.240 INCHES NOMINAL IN
special_featuresCOATING SHALL BE OILED, WAXED, OR CORROSION INHIBTED.
style_designatorSHOULDERED
shoulder_diameter0.595 INCHES NOMINAL IN
surface_treatmentPHOSPHATE OVERALL
material_document_and_classificationASTM A366 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A619 ASSN STD 2ND MATERIAL RESPONSE OVERALL
NSN5310-01-433-7230
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 57K3215 · 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
•
SHOULDER DIAMETER: 0.595 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 1.240 INCHES NOMINAL IN
•
SHOULDER HEIGHT: 0.105 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
•
MATERIAL: STEEL COMP 1009 OR STEEL OVERALL
•
SURFACE TREATMENT: PHOSPHATE OVERALL
•
COLOR: BLACK OVERALL
•
STYLE DESIGNATOR: SHOULDERED
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A366 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A619 ASSN STD 2ND MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
SHOULDER DIAMETER0.595 INCHES NOMINAL IN
OUTSIDE DIAMETER1.240 INCHES NOMINAL IN
SHOULDER HEIGHT0.105 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN
MATERIALSTEEL COMP 1009 OR STEEL OVERALL
SURFACE TREATMENTPHOSPHATE OVERALL
COLORBLACK OVERALL
STYLE DESIGNATORSHOULDERED
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A366 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A619 ASSN STD 2ND MATERIAL RESPONSE OVERALL
HOLE DIAMETER0.500 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN
OVERALL HEIGHT0.185 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
323896-1Interchangeable
interchangeable cross-reference
interchangeable
Z-355Interchangeable
interchangeable cross-reference
interchangeable
627411PC7Interchangeable
interchangeable cross-reference
interchangeable
91107Interchangeable
interchangeable cross-reference
interchangeable
LE128/40Interchangeable
interchangeable cross-reference
interchangeable
10-3054-A AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 57K3215?
57K3215 is a WASHER,SHOULDERED.
What parts can replace 57K3215?
There are 9 known substitutes for 57K3215: 323896-1, Z-355, 627411PC7 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 57K3215?
57K3215 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-433-7230. 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