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Technical Data Sheet
PartsTable / COMPONENT / 1328350
1328350 ✓ 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,FLAT is a the manufacturer industrial component. Key specifications include material: WOOL OVERALL, thickness: 0.250 INCHES NOMINAL IN, hole_diameter: 2.188 INCHES NOMINAL IN, overall_diameter: 3.500 INCHES NOMINAL IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-171-5594, 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
1328350
NSN: 5310-00-171-5594
FSC: 5310
CAGE: 44185 — TLD WOLLARD LLC (USA)
SPECIFICATIONS
materialWOOL OVERALL
thickness0.250 INCHES NOMINAL IN
hole_diameter2.188 INCHES NOMINAL IN
overall_diameter3.500 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-00-171-5594
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 1328350 · 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
•
PERIPHERAL SHAPE STYLE: ROUND
•
CENTER HOLE SHAPE STYLE: ROUND
•
MATERIAL: WOOL OVERALL
•
OVERALL DIAMETER: 3.500 INCHES NOMINAL IN
•
HOLE DIAMETER: 2.188 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
THICKNESS: 0.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
PERIPHERAL SHAPE STYLEROUND
CENTER HOLE SHAPE STYLEROUND
MATERIALWOOL OVERALL
OVERALL DIAMETER3.500 INCHES NOMINAL IN
HOLE DIAMETER2.188 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
THICKNESS0.250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
A39420PC50Interchangeable
interchangeable cross-reference
interchangeable
A34153REVDPC56Interchangeable
interchangeable cross-reference
interchangeable
A39419PC50Interchangeable
interchangeable cross-reference
interchangeable
4-237-9Interchangeable
interchangeable cross-reference
interchangeable
55375Interchangeable
interchangeable cross-reference
interchangeable
94293Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1328350?
1328350 is a WASHER,FLAT.
What parts can replace 1328350?
There are 17 known substitutes for 1328350: A39420PC50, A34153REVDPC56, A39419PC50 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1328350?
1328350 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-171-5594. 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