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PartsTable / COMPONENT / 2AA625
2AA625 ✓ 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 nut_style: HEXAGON, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), thread_direction: RIGHT-HAND, nominal_thread_size: 0.250 INCHES IN, thread_quantity_per_inch: 20. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-164-4486, 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
2AA625
NSN: 5310-01-164-4486
FSC: 5310
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
nut_styleHEXAGON
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
nominal_thread_size0.250 INCHES IN
thread_quantity_per_inch20
NSN5310-01-164-4486
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2AA625 · 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 SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD QUANTITY PER INCH: 20
•
NOMINAL THREAD SIZE: 0.250 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS (FLIS)
NUT STYLEHEXAGON
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH20
NOMINAL THREAD SIZE0.250 INCHES IN
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS2B
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
205016Interchangeable
interchangeable cross-reference
interchangeable
Q72839-4Interchangeable
interchangeable cross-reference
interchangeable
1381TLInterchangeable
interchangeable cross-reference
interchangeable
02-09-1118Interchangeable
interchangeable cross-reference
interchangeable
S073-002008Interchangeable
interchangeable cross-reference
interchangeable
20501/6Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2AA625?
2AA625 is a NUT,PLAIN,HEXAGON.
What parts can replace 2AA625?
There are 9 known substitutes for 2AA625: 205016, Q72839-4, 1381TL and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2AA625?
2AA625 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-164-4486. 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