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DIN 1440 4 ✓ 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: STEEL OVERALL, thickness: 0.8 MILLIMETERS NOMINAL MM, hole_diameter: 4.0 MILLIMETERS NOMINAL MM, overall_diameter: 8.0 MILLIMETERS NOMINAL MM, 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 5310-01-178-7335, 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
DIN 1440 4
NSN: 5310-01-178-7335
FSC: 5310
CAGE: 15526 — METRIC AND MULTISTANDARD COMPONENTS CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.8 MILLIMETERS NOMINAL MM
hole_diameter4.0 MILLIMETERS NOMINAL MM
overall_diameter8.0 MILLIMETERS NOMINAL MM
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
NSN5310-01-178-7335
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: DIN 1440 4 · 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
•
OVERALL DIAMETER: 8.0 MILLIMETERS NOMINAL MM
•
PERIPHERAL SHAPE STYLE: ROUND
•
THICKNESS: 0.8 MILLIMETERS NOMINAL MM
•
CENTER HOLE SHAPE STYLE: ROUND
•
HOLE DIAMETER: 4.0 MILLIMETERS NOMINAL MM
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OVERALL DIAMETER8.0 MILLIMETERS NOMINAL MM
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.8 MILLIMETERS NOMINAL MM
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER4.0 MILLIMETERS NOMINAL MM
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
WMSRS7-2-13Interchangeable
interchangeable cross-reference
interchangeable
917123-1EInterchangeable
interchangeable cross-reference
interchangeable
917123-1Interchangeable
interchangeable cross-reference
interchangeable
14404Interchangeable
interchangeable cross-reference
interchangeable
C54789Interchangeable
interchangeable cross-reference
interchangeable
83184Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is DIN 1440 4?
DIN 1440 4 is a WASHER,FLAT.
What parts can replace DIN 1440 4?
There are 18 known substitutes for DIN 1440 4: WMSRS7-2-13, 917123-1E, 917123-1 and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for DIN 1440 4?
DIN 1440 4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-178-7335. 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