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PartsTable / COMPONENT / 3276178
3276178 ✓ 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,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, nut_style: HEXAGON, nut_height: 0.266 INCHES NOMINAL IN, thread_class: 3B, 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 5310-00-011-7061, 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
3276178
NSN: 5310-00-011-7061
FSC: 5310
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.266 INCHES NOMINAL IN
thread_class3B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
width_across_flats0.500 INCHES NOMINAL IN
nominal_thread_size0.312 INCHES IN
thread_quantity_per_inch18
material_document_and_classificationQQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-011-7061
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3276178 · 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
•
WIDTH ACROSS FLATS: 0.500 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.312 INCHES IN
•
THREAD QUANTITY PER INCH: 18
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD CLASS: 3B
•
THREAD DIRECTION: RIGHT-HAND
•
NUT STYLE: HEXAGON
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
WIDTH ACROSS FLATS0.500 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.312 INCHES IN
THREAD QUANTITY PER INCH18
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD CLASS3B
THREAD DIRECTIONRIGHT-HAND
NUT STYLEHEXAGON
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
NUT HEIGHT0.266 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
633EA08SInterchangeable
interchangeable cross-reference
interchangeable
E2HInterchangeable
interchangeable cross-reference
interchangeable
JBTE31-EXInterchangeable
interchangeable cross-reference
interchangeable
11706-1Interchangeable
interchangeable cross-reference
interchangeable
LL-H58-6036Interchangeable
interchangeable cross-reference
interchangeable
FFB571TYPEAInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3276178?
3276178 is a NUT,PLAIN,HEXAGON.
What parts can replace 3276178?
There are 6 known substitutes for 3276178: 633EA08S, E2H, JBTE31-EX and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3276178?
3276178 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-011-7061. 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