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PartsTable / COMPONENT / PWA51972-29
PWA51972-29 ✓ 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

NUT,PLAIN,EXTENDED WASHER,HEXAGO. Key specifications include material: STEEL COMP 12L14 OVERALL, nut_style: HEXAGON, thread_class: 2B, thread_series: UNF, overall_height: 0.688 INCHES NOMINAL IN, 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 5310-01-112-4376, 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
PWA51972-29
NSN: 5310-01-112-4376
FSC: 5310
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
materialSTEEL COMP 12L14 OVERALL
nut_styleHEXAGON
thread_class2B
thread_seriesUNF
overall_height0.688 INCHES NOMINAL IN
thread_directionRIGHT-HAND
washer_thickness0.156 INCHES NOMINAL IN
surface_treatmentOXIDE OVERALL
width_across_flats0.875 INCHES NOMINAL IN
nominal_thread_size0.500 INCHES IN
washer_outside_diameter1.125 INCHES NOMINAL IN
thread_quantity_per_inch20
NSN5310-01-112-4376
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: PWA51972-29 · 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
•
THREAD QUANTITY PER INCH: 20
•
THREAD SERIES: UNF
•
SURFACE TREATMENT: OXIDE OVERALL
•
NOMINAL THREAD SIZE: 0.500 INCHES IN
•
MATERIAL: STEEL COMP 12L14 OVERALL
•
WASHER OUTSIDE DIAMETER: 1.125 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLEHEXAGON
OVERALL HEIGHT0.688 INCHES NOMINAL IN
THREAD QUANTITY PER INCH20
THREAD SERIESUNF
SURFACE TREATMENTOXIDE OVERALL
NOMINAL THREAD SIZE0.500 INCHES IN
MATERIALSTEEL COMP 12L14 OVERALL
WASHER OUTSIDE DIAMETER1.125 INCHES NOMINAL IN
WASHER THICKNESS0.156 INCHES NOMINAL IN
THREAD CLASS2B
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
GGG-P-831 TY8CLCSZ5Interchangeable
interchangeable cross-reference
interchangeable
210Interchangeable
interchangeable cross-reference
interchangeable
B107.48 TY2CL8Interchangeable
interchangeable cross-reference
interchangeable
20105Interchangeable
interchangeable cross-reference
interchangeable
74069Interchangeable
interchangeable cross-reference
interchangeable
402Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is PWA51972-29?
PWA51972-29 is a NUT,PLAIN,EXTENDED WASHER,HEXAGO.
What parts can replace PWA51972-29?
There are 17 known substitutes for PWA51972-29: GGG-P-831 TY8CLCSZ5, 210, B107.48 TY2CL8 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for PWA51972-29?
PWA51972-29 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-112-4376. 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