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PartsTable / COMPONENT / SL4999PC57
SL4999PC57 ✓ 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 CORROSION RESISTING OVERALL, nut_style: ROUND, nut_diameter: 2.377 INCHES NOMINAL IN, thread_class: 2B, nut_thickness: 1.502 INCHES NOMINAL IN, thread_series: UN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-216-7963, 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
SL4999PC57
NSN: 5310-00-216-7963
FSC: 5310
CAGE: 93232 — CURTISS-WRIGHT ELECTRO-MECHANICAL CORPORATION DBA CURTISS WRIGHT ENGINEERED PUMP DIVISION USE CAGE CODE 0UBG9 FOR CATALOGING (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
nut_styleROUND
nut_diameter2.377 INCHES NOMINAL IN
thread_class2B
nut_thickness1.502 INCHES NOMINAL IN
thread_seriesUN
thread_directionRIGHT-HAND
drive_point_depth0.300 INCHES NOMINAL IN
nominal_thread_size1.750 INCHES IN
drive_point_diameter0.287 INCHES NOMINAL IN
drive_point_quantity3
nut_counterbore_depth0.500 INCHES NOMINAL NUT IN
NSN5310-00-216-7963
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: SL4999PC57 · 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
•
NUT THICKNESS: 1.502 INCHES NOMINAL IN
•
NUT DIAMETER: 2.377 INCHES NOMINAL IN
•
DRIVE POINT DEPTH: 0.300 INCHES NOMINAL IN
•
NUT STYLE: ROUND
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD CLASS: 2B
•
DRIVE POINT QUANTITY: 3
•
NOMINAL THREAD SIZE: 1.750 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
NUT THICKNESS1.502 INCHES NOMINAL IN
NUT DIAMETER2.377 INCHES NOMINAL IN
DRIVE POINT DEPTH0.300 INCHES NOMINAL IN
NUT STYLEROUND
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS2B
DRIVE POINT QUANTITY3
NOMINAL THREAD SIZE1.750 INCHES IN
MATERIALSTEEL CORROSION RESISTING OVERALL
DRIVE POINT DIAMETER0.287 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 24
10391Interchangeable
interchangeable cross-reference
interchangeable
456LXInterchangeable
interchangeable cross-reference
interchangeable
52418Interchangeable
interchangeable cross-reference
interchangeable
1490-0004Interchangeable
interchangeable cross-reference
interchangeable
1001Interchangeable
interchangeable cross-reference
interchangeable
774417-3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SL4999PC57?
SL4999PC57 is a NUT,PLAIN,ROUND.
What parts can replace SL4999PC57?
There are 24 known substitutes for SL4999PC57: 10391, 456LX, 52418 and 21 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SL4999PC57?
SL4999PC57 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-216-7963. 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