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PartsTable / COMPONENT / PWA52779-9
PWA52779-9 ✓ 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,SLEEVE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: SLEEVE, nut_length: 0.250 INCHES NOMINAL IN, nut_diameter: 0.750 INCHES NOMINAL IN, thread_class: 2B, boss_diameter: 0.500 INCHES NOMINAL OVERALL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-357-3940, 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
PWA52779-9
NSN: 5310-01-357-3940
FSC: 5310
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleSLEEVE
nut_length0.250 INCHES NOMINAL IN
nut_diameter0.750 INCHES NOMINAL IN
thread_class2B
boss_diameter0.500 INCHES NOMINAL OVERALL IN
thread_seriesUNIFIED NATIONAL COARSE (UNC)
boss_thickness0.062 INCHES NOMINAL OVERALL IN
thread_directionRIGHT-HAND
surface_treatmentOXIDE OVERALL
nominal_thread_size0.375 INCHES IN
cross-sectional_shapeROUND NUT
NSN5310-01-357-3940
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: PWA52779-9 · 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: SLEEVE
•
THREAD CLASS: 2B
•
SURFACE TREATMENT: OXIDE OVERALL
•
THREAD QUANTITY PER INCH: 16
•
CROSS-SECTIONAL SHAPE: ROUND NUT
•
BOSS DIAMETER: 0.500 INCHES NOMINAL OVERALL IN
•
BOSS THICKNESS: 0.062 INCHES NOMINAL OVERALL IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLESLEEVE
THREAD CLASS2B
SURFACE TREATMENTOXIDE OVERALL
THREAD QUANTITY PER INCH16
CROSS-SECTIONAL SHAPEROUND NUT
BOSS DIAMETER0.500 INCHES NOMINAL OVERALL IN
BOSS THICKNESS0.062 INCHES NOMINAL OVERALL IN
MATERIALSTEEL OVERALL
NOMINAL THREAD SIZE0.375 INCHES IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
19549N PIECE 37Interchangeable
interchangeable cross-reference
interchangeable
16904Interchangeable
interchangeable cross-reference
interchangeable
3111328-26Interchangeable
interchangeable cross-reference
interchangeable
102BCInterchangeable
interchangeable cross-reference
interchangeable
B107.44 TY2Interchangeable
interchangeable cross-reference
interchangeable
1042Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is PWA52779-9?
PWA52779-9 is a NUT,SLEEVE.
What parts can replace PWA52779-9?
There are 8 known substitutes for PWA52779-9: 19549N PIECE 37, 16904, 3111328-26 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for PWA52779-9?
PWA52779-9 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-357-3940. 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