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2YJE2 — Technical Data Sheet

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— · 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: 0.094 INCHES NOMINAL IN, hole_diameter: 0.203 INCHES NOMINAL IN, overall_diameter: 0.50 INCHES NOMINAL IN, surface_treatment: OXIDE OVERALL, peripheral_shape_style: ROUND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 5310-01-688-0101, 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
2YJE2
NSN: 5310-01-688-0101
FSC: 5310
CAGE: 78753 — TE-CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thickness0.094 INCHES NOMINAL IN
hole_diameter0.203 INCHES NOMINAL IN
overall_diameter0.50 INCHES NOMINAL IN
surface_treatmentOXIDE OVERALL
peripheral_shape_styleROUND
part_name_assigned_by_controlling_agencyHARDENED FLAT WASHER
NSN5310-01-688-0101
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2YJE2 · 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
•
COLOR: BLACK OVERALL
•
MATERIAL: STEEL OVERALL
•
SURFACE TREATMENT: OXIDE OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
THICKNESS: 0.094 INCHES NOMINAL IN
•
OVERALL DIAMETER: 0.50 INCHES NOMINAL IN
•
HOLE DIAMETER: 0.203 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
COLORBLACK OVERALL
MATERIALSTEEL OVERALL
SURFACE TREATMENTOXIDE OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYHARDENED FLAT WASHER
PERIPHERAL SHAPE STYLEROUND
THICKNESS0.094 INCHES NOMINAL IN
OVERALL DIAMETER0.50 INCHES NOMINAL IN
HOLE DIAMETER0.203 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
42600InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
40101InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
C-42600InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2YJE2?
2YJE2 is a WASHER,FLAT.
What parts can replace 2YJE2?
There are 3 known substitutes for 2YJE2: 42600, 40101, C-42600. Substitute compatibility should be verified for your specific system.
What is the NSN for 2YJE2?
2YJE2 is cataloged in the Federal Logistics Information System under NSN 5310-01-688-0101. 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: September 2026