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PartsTable / COMPONENT / 387-831AP
387-831AP ✓ 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,ROUND is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_diameter: 1.480 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN, thread_series: UNF, thread_direction: RIGHT-HAND, drive_point_depth: 0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN, drive_point_width: 0.185 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-339-1433, 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
387-831AP
NSN: 5310-01-339-1433
FSC: 5310
CAGE: 1T943 — ACME PRODUCTS & ENGINEERING INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_diameter1.480 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
thread_seriesUNF
thread_directionRIGHT-HAND
drive_point_depth0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
drive_point_width0.185 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
nominal_thread_size0.375 INCHES IN
thread_quantity_per_inch24
NSN5310-01-339-1433
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 387-831AP · 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
•
DRIVE POINT DEPTH: 0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
•
THREAD QUANTITY PER INCH: 24
•
MATERIAL: STEEL OVERALL
•
THREAD SERIES: UNF
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
•
DRIVE POINT WIDTH: 0.185 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
•
NUT DIAMETER: 1.480 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
DRIVE POINT DEPTH0.090 INCHES MINIMUM AND 0.100 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH24
MATERIALSTEEL OVERALL
THREAD SERIESUNF
NOMINAL THREAD SIZE0.375 INCHES IN
DRIVE POINT WIDTH0.185 INCHES MINIMUM AND 0.190 INCHES MAXIMUM IN
NUT DIAMETER1.480 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
5310PL0530873Interchangeable
interchangeable cross-reference
interchangeable
MS21044N6Interchangeable
interchangeable cross-reference
interchangeable
5310PL2091896Interchangeable
interchangeable cross-reference
interchangeable
387831Interchangeable
interchangeable cross-reference
interchangeable
393754Interchangeable
interchangeable cross-reference
interchangeable
385911Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 387-831AP?
387-831AP is a NUT,PLAIN,ROUND.
What parts can replace 387-831AP?
There are 11 known substitutes for 387-831AP: 5310PL0530873, MS21044N6, 5310PL2091896 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 387-831AP?
387-831AP is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-339-1433. 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