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PartsTable / COMPONENT / 111-8540933 ITEM 4-3
111-8540933 ITEM 4-3 ✓ 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,SLEEVE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, thread_class: 3B, thread_series: UNIFIED NATIONAL COARSE (UNC), thread_direction: RIGHT-HAND, nominal_thread_size: 0.375 INCHES IN, thread_quantity_per_inch: 16. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-651-9760, 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
111-8540933 ITEM 4-3
NSN: 5310-01-651-9760
FSC: 5310
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
thread_class3B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
nominal_thread_size0.375 INCHES IN
thread_quantity_per_inch16
NSN5310-01-651-9760
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 111-8540933 ITEM 4-3 · 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
•
NOMINAL THREAD SIZE: 0.375 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD QUANTITY PER INCH: 16
•
THREAD CLASS: 3B
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
MATERIAL: NICKEL ALLOY OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE0.375 INCHES IN
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH16
THREAD CLASS3B
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
MATERIALNICKEL ALLOY OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
H692-1802-39L1Interchangeable
interchangeable cross-reference
interchangeable
566-6405739 FIND SDGD B37L1Interchangeable
interchangeable cross-reference
interchangeable
566-6405739 FIND SDGD B37Interchangeable
interchangeable cross-reference
interchangeable
0.375-16UNC-3B NICUInterchangeable
interchangeable cross-reference
interchangeable
709-8345731-012-004Interchangeable
interchangeable cross-reference
interchangeable
0.375-16UNC-3B NICUD4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 111-8540933 ITEM 4-3?
111-8540933 ITEM 4-3 is a NUT,SLEEVE.
What parts can replace 111-8540933 ITEM 4-3?
There are 9 known substitutes for 111-8540933 ITEM 4-3: H692-1802-39L1, 566-6405739 FIND SDGD B37L1, 566-6405739 FIND SDGD B37 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 111-8540933 ITEM 4-3?
111-8540933 ITEM 4-3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-651-9760. 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