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Technical Data Sheet
PartsTable / COMPONENT / 3277861
3277861 ✓ 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 PIN,STRAIGHT,THREADED is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thread_class: 3A A, thread_length: 0.625 INCHES NOMINAL IN, first_end_style: SQUARE, pin_grip_length: 1.125 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 5315-00-038-0809, 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
3277861
NSN: 5315-00-038-0809
FSC: 5315
CAGE: 72915 — GENERAL MOTORS CORP ELECTRO-MOTIVE DIV (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thread_class3A A
thread_length0.625 INCHES NOMINAL IN
first_end_styleSQUARE
pin_grip_length1.125 INCHES NOMINAL IN
thread_directionRIGHT-HAND
first_end_locationSHANK END
pin_overall_length1.125 INCHES NOMINAL IN
nominal_thread_size0.312 INCHES IN
pin_overall_diameter0.4995 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
thread_quantity_per_inch24
thread_series_designatorUNF
NSN5315-00-038-0809
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 3277861 · 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
•
PIN OVERALL DIAMETER: 0.4995 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
•
SECOND END RELATIONSHIP WITH FIRST END: IDENTICAL
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD SERIES DESIGNATOR: UNF
•
FIRST END LOCATION: SHANK END
•
THREAD QUANTITY PER INCH: 24
•
THREAD LENGTH: 0.625 INCHES NOMINAL IN
•
FIRST END STYLE: SQUARE
TECHNICAL CHARACTERISTICS (FLIS)
PIN OVERALL DIAMETER0.4995 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN
SECOND END RELATIONSHIP WITH FIRST ENDIDENTICAL
THREAD DIRECTIONRIGHT-HAND
THREAD SERIES DESIGNATORUNF
FIRST END LOCATIONSHANK END
THREAD QUANTITY PER INCH24
THREAD LENGTH0.625 INCHES NOMINAL IN
FIRST END STYLESQUARE
PIN GRIP LENGTH1.125 INCHES NOMINAL IN
THREAD CLASS3A A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
321786-1Interchangeable
interchangeable cross-reference
interchangeable
HRC34JInterchangeable
interchangeable cross-reference
interchangeable
HRC34Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3277861?
3277861 is a PIN,STRAIGHT,THREADED.
What parts can replace 3277861?
There are 3 known substitutes for 3277861: 321786-1, HRC34J, HRC34. Substitute compatibility should be verified for your specific system.
What is the NSN for 3277861?
3277861 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5315-00-038-0809. 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