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PartsTable / COMPONENT / R863 PIECE 33
R863 PIECE 33 ✓ 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 COMP 303 OVERALL, nut_style: ROUND, nut_diameter: 2.750 INCHES NOMINAL IN, thread_class: 2B, nut_thickness: 0.422 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN, thread_series: UNF. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-710-8107, 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
R863 PIECE 33
NSN: 5310-00-710-8107
FSC: 5310
CAGE: 63857 — CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
nut_styleROUND
nut_diameter2.750 INCHES NOMINAL IN
thread_class2B
nut_thickness0.422 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
thread_seriesUNF
thread_directionLEFT-HAND
nominal_thread_size1.000 INCHES IN
drive_point_diameter0.281 INCHES NOMINAL IN
drive_point_quantity2
hole_type_and_quantity1 TAPPED
hole_configuration_styleCONFIGURATION J
NSN5310-00-710-8107
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: R863 PIECE 33 · 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: 1.000 INCHES IN
•
HOLE CONFIGURATION STYLE: CONFIGURATION J
•
NUT DIAMETER: 2.750 INCHES NOMINAL IN
•
DRIVE POINT DIAMETER: 0.281 INCHES NOMINAL IN
•
THREAD CLASS: 2B
•
HOLE THREAD QUANTITY PER INCH: 18
•
NUT THICKNESS: 0.422 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
•
HOLE TYPE AND QUANTITY: 1 TAPPED
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE1.000 INCHES IN
HOLE CONFIGURATION STYLECONFIGURATION J
NUT DIAMETER2.750 INCHES NOMINAL IN
DRIVE POINT DIAMETER0.281 INCHES NOMINAL IN
THREAD CLASS2B
HOLE THREAD QUANTITY PER INCH18
NUT THICKNESS0.422 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN
HOLE TYPE AND QUANTITY1 TAPPED
THREAD SERIESUNF
NUT STYLEROUND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
Z3-1Interchangeable
interchangeable cross-reference
interchangeable
90236Interchangeable
interchangeable cross-reference
interchangeable
5133-12HInterchangeable
interchangeable cross-reference
interchangeable
Q1-12Interchangeable
interchangeable cross-reference
interchangeable
R933 PIECE 1EEInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R863 PIECE 33?
R863 PIECE 33 is a NUT,PLAIN,ROUND.
What parts can replace R863 PIECE 33?
There are 5 known substitutes for R863 PIECE 33: Z3-1, 90236, 5133-12H and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for R863 PIECE 33?
R863 PIECE 33 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-710-8107. 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