PartsTable
Technical Data Sheet
50FA440 ✓ 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 CORROSION RESISTING OVERALL, nut_style: HEXAGON, nut_height: 0.133 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN, lubrication: DRY FILM LUBRICANT, temp_rating: 450.0 FAHRENHEIT NOMINAL DEGF, thread_class: 3B. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-088-6153, 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
50FA440
NSN: 5310-00-088-6153
FSC: 5310
CAGE: 56878 — SPS TECHNOLOGIES, LLC DBA PB FASTENERS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
nut_styleHEXAGON
nut_height0.133 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN
lubricationDRY FILM LUBRICANT
temp_rating450.0 FAHRENHEIT NOMINAL DEGF
thread_class3B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
locking_featurePREVAILING TORQUE ALL METAL DESIGN
thread_directionRIGHT-HAND
countersink_angle88.0 DEGREES NOMINAL NUT
width_across_flats0.243 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN
nominal_thread_size0.112 INCHES IN
NSN5310-00-088-6153
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 50FA440 · 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
NUT STYLE: HEXAGON
LOCKING FEATURE: PREVAILING TORQUE ALL METAL DESIGN
THREAD QUANTITY PER INCH: 40
BEARING SURFACE TYPE: CHAMFERED
NOMINAL THREAD SIZE: 0.112 INCHES IN
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
THREAD DIRECTION: RIGHT-HAND
MATERIAL: STEEL CORROSION RESISTING OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLEHEXAGON
LOCKING FEATUREPREVAILING TORQUE ALL METAL DESIGN
THREAD QUANTITY PER INCH40
BEARING SURFACE TYPECHAMFERED
NOMINAL THREAD SIZE0.112 INCHES IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD DIRECTIONRIGHT-HAND
MATERIALSTEEL CORROSION RESISTING OVERALL
WIDTH ACROSS FLATS0.243 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN
NUT HEIGHT0.135 INCHES MINIMUM AND 0.155 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
80201Interchangeable
interchangeable cross-reference
interchangeable
R1160-4Interchangeable
interchangeable cross-reference
interchangeable
45-2900Interchangeable
interchangeable cross-reference
interchangeable
WM204Interchangeable
interchangeable cross-reference
interchangeable
C8020Interchangeable
interchangeable cross-reference
interchangeable
00044Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 50FA440?
50FA440 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 50FA440?
There are 21 known substitutes for 50FA440: 80201, R1160-4, 45-2900 and 18 more. Substitute compatibility should be verified for your specific system.
Is 50FA440 still available?
50FA440 is currently cancelled.
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