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PartsTable / COMPONENT / R-529 PIECE 70
R-529 PIECE 70 ✓ 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,HEXAGON is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, nut_style: HEXAGON, nut_height: 0.625 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNF, thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-509-8325, 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
R-529 PIECE 70
NSN: 5310-00-509-8325
FSC: 5310
CAGE: 63857 — CIRCOR NAVAL SOLUTIONS LLC DBA WARREN PUMPS (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
nut_styleHEXAGON
nut_height0.625 INCHES NOMINAL IN
thread_class2B
thread_seriesUNF
thread_directionRIGHT-HAND
width_across_flats2.000 INCHES NOMINAL IN
nominal_thread_size1.250 INCHES IN
bearing_surface_typeFLAT
bearing_surface_finish125.0 MICROINCHES
hole_type_and_quantity1 TAPPED
hole_configuration_styleCONFIGURATION H
NSN5310-00-509-8325
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: R-529 PIECE 70 · 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 DIRECTION: RIGHT-HAND
•
THREAD SERIES: UNF
•
HOLE THREAD QUANTITY PER INCH: 20
•
NOMINAL THREAD SIZE: 1.250 INCHES IN
•
BEARING SURFACE FINISH: 125.0 MICROINCHES
•
THREAD QUANTITY PER INCH: 12
•
BEARING SURFACE TYPE: FLAT
•
HOLE CONFIGURATION STYLE: CONFIGURATION H
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
THREAD SERIESUNF
HOLE THREAD QUANTITY PER INCH20
NOMINAL THREAD SIZE1.250 INCHES IN
BEARING SURFACE FINISH125.0 MICROINCHES
THREAD QUANTITY PER INCH12
BEARING SURFACE TYPEFLAT
HOLE CONFIGURATION STYLECONFIGURATION H
HOLE NOMINAL THREAD DIAMETER0.250 INCHES IN
NUT STYLEHEXAGON
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
2018CInterchangeable
interchangeable cross-reference
interchangeable
F124Interchangeable
interchangeable cross-reference
interchangeable
0124-024Interchangeable
interchangeable cross-reference
interchangeable
CB35Interchangeable
interchangeable cross-reference
interchangeable
CMR06F681JODPInterchangeable
interchangeable cross-reference
interchangeable
M19-20873 PC NO 156Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is R-529 PIECE 70?
R-529 PIECE 70 is a NUT,PLAIN,HEXAGON.
What parts can replace R-529 PIECE 70?
There are 8 known substitutes for R-529 PIECE 70: 2018C, F124, 0124-024 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for R-529 PIECE 70?
R-529 PIECE 70 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-509-8325. 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