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Technical Data Sheet
417526PC4 ✓ 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,PLAIN,CAP is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, nut_style: CAP, nut_height: 0.359 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), 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 5310-00-596-2128, 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
417526PC4
NSN: 5310-00-596-2128
FSC: 5310
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
nut_styleCAP
nut_height0.359 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
width_across_flats0.312 INCHES NOMINAL IN
nominal_thread_size0.164 INCHES IN
bearing_surface_typeWASHER FACED
thread_quantity_per_inch32
material_document_and_classificationQQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-596-2128
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 417526PC4 · 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: STEEL COMP 303 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
WIDTH ACROSS FLATS: 0.312 INCHES NOMINAL IN
THREAD CLASS: 2B
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
BEARING SURFACE TYPE: WASHER FACED
NOMINAL THREAD SIZE: 0.164 INCHES IN
THREAD QUANTITY PER INCH: 32
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL COMP 303 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-764,COND A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
WIDTH ACROSS FLATS0.312 INCHES NOMINAL IN
THREAD CLASS2B
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
BEARING SURFACE TYPEWASHER FACED
NOMINAL THREAD SIZE0.164 INCHES IN
THREAD QUANTITY PER INCH32
NUT STYLECAP
NUT HEIGHT0.359 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
655267Interchangeable
interchangeable cross-reference
interchangeable
821-6Interchangeable
interchangeable cross-reference
interchangeable
325805 PC-3Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 417526PC4?
417526PC4 is a NUT,PLAIN,CAP.
What parts can replace 417526PC4?
There are 3 known substitutes for 417526PC4: 655267, 821-6, 325805 PC-3. Substitute compatibility should be verified for your specific system.
What is the NSN for 417526PC4?
417526PC4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-596-2128. This indicates validated use in U.S. government and defense supply chains.
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