PartsTable
Technical Data Sheet
5287403 ✓ 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 NUT,PLAIN,SLOTTED,HEXAGON is a the manufacturer industrial component. Key specifications include nut_style: SLOTTED, HEXAGON, nut_height: 0.812 INCHES NOMINAL IN, thread_class: 3B, thread_series: UN, hardness_rating: 86.0 ROCKWELL SUPERFICIAL 15-N MINIMUM, thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-350-7265, 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
5287403
NSN: 5310-00-350-7265
FSC: 5310
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
nut_styleSLOTTED, HEXAGON
nut_height0.812 INCHES NOMINAL IN
thread_class3B
thread_seriesUN
hardness_rating86.0 ROCKWELL SUPERFICIAL 15-N MINIMUM
thread_directionRIGHT-HAND
countersink_angle90.0 DEGREES NOMINAL FIRST END
features_providedCASEHARDENED
surface_treatmentPHOSPHATE OVERALL
width_across_flats2.625 INCHES NOMINAL IN
nominal_thread_size1.875 INCHES IN
bearing_surface_typeWASHER FACED
NSN5310-00-350-7265
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 5287403 · 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
SURFACE TREATMENT: PHOSPHATE OVERALL
NUT HEIGHT: 0.797 INCHES MINIMUM AND 0.828 INCHES MAXIMUM IN
THREAD SERIES: UN
THREAD QUANTITY PER INCH: 16
NOMINAL THREAD SIZE: 1.875 INCHES IN
BEARING SURFACE TYPE: WASHER FACED
WIDTH ACROSS FLATS: 2.625 INCHES NOMINAL IN
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTPHOSPHATE OVERALL
NUT HEIGHT0.797 INCHES MINIMUM AND 0.828 INCHES MAXIMUM IN
THREAD SERIESUN
THREAD QUANTITY PER INCH16
NOMINAL THREAD SIZE1.875 INCHES IN
BEARING SURFACE TYPEWASHER FACED
WIDTH ACROSS FLATS2.625 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
MATERIALSTEEL OVERALL
THREAD CLASS3B
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
120423Interchangeable
interchangeable cross-reference
interchangeable
1901842Interchangeable
interchangeable cross-reference
interchangeable
20-463-1Interchangeable
interchangeable cross-reference
interchangeable
13211E9224Interchangeable
interchangeable cross-reference
interchangeable
5287403Interchangeable
interchangeable cross-reference
interchangeable
IDE-34-TG30Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5287403?
5287403 is a NUT,PLAIN,SLOTTED,HEXAGON.
What parts can replace 5287403?
There are 13 known substitutes for 5287403: 120423, 1901842, 20-463-1 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5287403?
5287403 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-350-7265. This indicates validated use in U.S. government and defense supply chains.
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