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Technical Data Sheet
20FA832 ✓ 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,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1117 OVERALL, nut_style: HEXAGON, nut_height: 0.223 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN, temp_rating: 550.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B, thread_series: UNIFIED NATIONAL COARSE (UNC). This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-787-8781, 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
20FA832
NSN: 5310-00-787-8781
FSC: 5310
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)
SPECIFICATIONS
materialSTEEL COMP 1117 OVERALL
nut_styleHEXAGON
nut_height0.223 INCHES MINIMUM AND 0.243 INCHES MAXIMUM IN
temp_rating550.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
width_across_flats0.336 INCHES MINIMUM AND 0.345 INCHES MAXIMUM IN
nominal_thread_size0.164 INCHES IN
bearing_surface_typeCHAMFERED
thread_quantity_per_inch32
NSN5310-00-787-8781
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 20FA832 · 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
MATERIAL DOCUMENT AND CLASSIFICATION: AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
WIDTH ACROSS FLATS: 0.336 INCHES MINIMUM AND 0.345 INCHES MAXIMUM IN
NOMINAL THREAD SIZE: 0.164 INCHES IN
BEARING SURFACE TYPE: CHAMFERED
MATERIAL: STEEL COMP 1117 OVERALL
THREAD CLASS: 3B
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONAISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
WIDTH ACROSS FLATS0.336 INCHES MINIMUM AND 0.345 INCHES MAXIMUM IN
NOMINAL THREAD SIZE0.164 INCHES IN
BEARING SURFACE TYPECHAMFERED
MATERIALSTEEL COMP 1117 OVERALL
THREAD CLASS3B
THREAD DIRECTIONRIGHT-HAND
NUT STYLEHEXAGON
TEMP RATING550.0 FAHRENHEIT NOMINAL DEGF
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
FA832Interchangeable
interchangeable cross-reference
interchangeable
4S5348Interchangeable
interchangeable cross-reference
interchangeable
P10-7334Interchangeable
interchangeable cross-reference
interchangeable
1004271PC68Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20FA832?
20FA832 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 20FA832?
There are 4 known substitutes for 20FA832: FA832, 4S5348, P10-7334 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20FA832?
20FA832 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-787-8781. This indicates validated use in U.S. government and defense supply chains.
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