PartsTable
Technical Data Sheet
515968 ✓ 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: NICKEL ALLOY OVERALL, nut_style: ROUND, nut_diameter: 4.600 INCHES MINIMUM AND 4.620 INCHES MAXIMUM IN, thread_class: 3B, nut_thickness: 0.525 INCHES MINIMUM AND 0.545 INCHES MAXIMUM IN, thread_series: UNIFIED NATIONAL JOINT (UNJ). This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-162-0751, 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
515968
NSN: 5310-01-162-0751
FSC: 5310
CAGE: 52661 — RTX CORPORATION DIV PRATT & WHITNEY (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
nut_styleROUND
nut_diameter4.600 INCHES MINIMUM AND 4.620 INCHES MAXIMUM IN
thread_class3B
nut_thickness0.525 INCHES MINIMUM AND 0.545 INCHES MAXIMUM IN
thread_seriesUNIFIED NATIONAL JOINT (UNJ)
thread_directionRIGHT-HAND
drive_point_width0.370 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
nominal_thread_size4.250 INCHES IN
drive_point_quantity8
thread_quantity_per_inch12
material_document_and_classificationAMS 5660 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-162-0751
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 515968 · 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
THREAD CLASS: 3B
DRIVE POINT WIDTH: 0.370 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
THREAD DIRECTION: RIGHT-HAND
THREAD QUANTITY PER INCH: 12
THREAD SERIES: UNIFIED NATIONAL JOINT (UNJ)
NOMINAL THREAD SIZE: 4.250 INCHES IN
MATERIAL: NICKEL ALLOY OVERALL
NUT DIAMETER: 4.600 INCHES MINIMUM AND 4.620 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS3B
DRIVE POINT WIDTH0.370 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH12
THREAD SERIESUNIFIED NATIONAL JOINT (UNJ)
NOMINAL THREAD SIZE4.250 INCHES IN
MATERIALNICKEL ALLOY OVERALL
NUT DIAMETER4.600 INCHES MINIMUM AND 4.620 INCHES MAXIMUM IN
NUT THICKNESS0.525 INCHES MINIMUM AND 0.545 INCHES MAXIMUM IN
NUT STYLEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
G-7568Interchangeable
interchangeable cross-reference
interchangeable
29288-AInterchangeable
interchangeable cross-reference
interchangeable
51568Interchangeable
interchangeable cross-reference
interchangeable
PH5046Interchangeable
interchangeable cross-reference
interchangeable
CH-10467Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 515968?
515968 is a NUT,PLAIN,ROUND.
What parts can replace 515968?
There are 5 known substitutes for 515968: G-7568, 29288-A, 51568 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 515968?
515968 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-162-0751. This indicates validated use in U.S. government and defense supply chains.
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