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PartsTable / COMPONENT / 50FP2-632
50FP2-632 ✓ 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,SELF-LOCKING,CLINCH is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, nut_style: CLINCH, nut_height: 0.240 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN, lubrication: SOLUBLE LUBRICANT, pilot_length: 0.080 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN, thread_class: 3B. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-638-9290, 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
50FP2-632
NSN: 5310-00-638-9290
FSC: 5310
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
nut_styleCLINCH
nut_height0.240 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
lubricationSOLUBLE LUBRICANT
pilot_length0.080 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
thread_class3B
thread_seriesUNJC
pilot_diameter0.220 INCHES MINIMUM AND 0.224 INCHES MAXIMUM IN
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_across_flats0.305 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
NSN5310-00-638-9290
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 50FP2-632 · 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
•
SURFACE TREATMENT: PASSIVATE OVERALL
•
NOMINAL THREAD SIZE: 0.138 INCHES IN
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
WIDTH ACROSS FLATS: 0.305 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
•
NUT HEIGHT: 0.240 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
•
THREAD SERIES: UNJC
•
THREAD QUANTITY PER INCH: 32
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTPASSIVATE OVERALL
NOMINAL THREAD SIZE0.138 INCHES IN
MATERIALSTEEL CORROSION RESISTING OVERALL
PART NAME ASSIGNED BY CONTROLLING AGENCYNAVY SPECIAL PROJECT
WIDTH ACROSS FLATS0.305 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
NUT HEIGHT0.240 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN
THREAD SERIESUNJC
THREAD QUANTITY PER INCH32
LUBRICATIONSOLUBLE LUBRICANT
NUT STYLECLINCH
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
981-1 1/2Interchangeable
interchangeable cross-reference
interchangeable
81-1 1/2Interchangeable
interchangeable cross-reference
interchangeable
11932Interchangeable
interchangeable cross-reference
interchangeable
AN6235-2Interchangeable
interchangeable cross-reference
interchangeable
89375Interchangeable
interchangeable cross-reference
interchangeable
972C704-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 50FP2-632?
50FP2-632 is a NUT,SELF-LOCKING,CLINCH.
What parts can replace 50FP2-632?
There are 14 known substitutes for 50FP2-632: 981-1 1/2, 81-1 1/2, 11932 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 50FP2-632?
50FP2-632 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-638-9290. 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