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3435A4PC78 ✓ 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 length: 0.945 INCHES NOMINAL IN, material: COPPER ALLOY OVERALL, thickness: 0.185 INCHES NOMINAL IN, hole_diameter: 0.550 INCHES NOMINAL IN, width_across_flats: 0.810 INCHES NOMINAL IN, peripheral_shape_style: RECTANGULAR. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-469-1306, 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
3435A4PC78
NSN: 5310-00-469-1306
FSC: 5310
CAGE: 80212 — BAE SYSTEMS LAND & ARMAMENTS L.P. (USA)
SPECIFICATIONS
length0.945 INCHES NOMINAL IN
materialCOPPER ALLOY OVERALL
thickness0.185 INCHES NOMINAL IN
hole_diameter0.550 INCHES NOMINAL IN
width_across_flats0.810 INCHES NOMINAL IN
peripheral_shape_styleRECTANGULAR
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-00-469-1306
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3435A4PC78 · 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
•
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
•
CENTER HOLE SHAPE STYLE: ROUND
•
PERIPHERAL SHAPE STYLE: RECTANGULAR
•
WIDTH ACROSS FLATS: 0.810 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY OVERALL
•
LENGTH: 0.945 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.550 INCHES NOMINAL IN
•
THICKNESS: 0.185 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
CENTER HOLE SHAPE STYLEROUND
PERIPHERAL SHAPE STYLERECTANGULAR
WIDTH ACROSS FLATS0.810 INCHES NOMINAL IN
MATERIALCOPPER ALLOY OVERALL
LENGTH0.945 INCHES NOMINAL IN
HOLE DIAMETER0.550 INCHES NOMINAL IN
THICKNESS0.185 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
18-4634Interchangeable
interchangeable cross-reference
interchangeable
37924Interchangeable
interchangeable cross-reference
interchangeable
01760-0069Interchangeable
interchangeable cross-reference
interchangeable
4634Interchangeable
interchangeable cross-reference
interchangeable
G302674-4Interchangeable
interchangeable cross-reference
interchangeable
4642Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3435A4PC78?
3435A4PC78 is a WASHER,FLAT.
What parts can replace 3435A4PC78?
There are 17 known substitutes for 3435A4PC78: 18-4634, 37924, 01760-0069 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3435A4PC78?
3435A4PC78 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-469-1306. 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