PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 49NU3212
49NU3212 ✓ 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,SELF-LOCKING,HEXAGON is a the manufacturer industrial component. Key specifications include material: STEEL NUT, nut_style: HEXAGON, nut_height: 2.343 INCHES MINIMUM AND 2.469 INCHES MAXIMUM IN, temp_rating: 250.0 FAHRENHEIT MAXIMUM DEGF, thread_class: 3B, thread_series: UN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-312-3938, 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
49NU3212
NSN: 5310-01-312-3938
FSC: 5310
CAGE: 82156 — AMERACE CORP (USA)
SPECIFICATIONS
materialSTEEL NUT
nut_styleHEXAGON
nut_height2.343 INCHES MINIMUM AND 2.469 INCHES MAXIMUM IN
temp_rating250.0 FAHRENHEIT MAXIMUM DEGF
thread_class3B
thread_seriesUN
locking_featurePREVAILING TORQUE WITH NONMETALLIC INSERT
special_featuresRED LOCKING INSERT
thread_directionRIGHT-HAND
surface_treatmentZINC AND CHROMATE OVERALL EXCEPT INSERT
width_across_flats3.086 INCHES MINIMUM AND 3.137 INCHES MAXIMUM IN
nominal_thread_size2.000 INCHES IN
NSN5310-01-312-3938
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 49NU3212 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
49NU-3212Interchangeable
interchangeable cross-reference
interchangeable
19760Interchangeable
interchangeable cross-reference
interchangeable
688348Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 49NU3212?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 49NU3212?
49NU3212 is a NUT,SELF-LOCKING,HEXAGON.
What parts can replace 49NU3212?
There are 3 known substitutes for 49NU3212: 49NU-3212, 19760, 688348. Substitute compatibility should be verified for your specific system.
What is the NSN for 49NU3212?
49NU3212 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-312-3938. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 49NU3212

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026