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PartsTable / COMPONENT / 2129684
2129684 ✓ 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: 0.277 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNF, 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 5310-00-834-5523, 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
2129684
NSN: 5310-00-834-5523
FSC: 5310
CAGE: 93334 — ATWOOD FENCE CO INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
nut_styleHEXAGON
nut_height0.277 INCHES NOMINAL IN
thread_class2B
thread_seriesUNF
thread_directionRIGHT-HAND
width_across_flats0.495 INCHES NOMINAL IN
nominal_thread_size0.312 INCHES IN
bearing_surface_typeFLAT
thread_quantity_per_inch24
NSN5310-00-834-5523
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2129684 · 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
•
THREAD QUANTITY PER INCH: 24
•
BEARING SURFACE TYPE: FLAT
•
THREAD SERIES: UNF
•
NOMINAL THREAD SIZE: 0.312 INCHES IN
•
WIDTH ACROSS FLATS: 0.495 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND
•
MATERIAL: STEEL OVERALL
•
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH24
BEARING SURFACE TYPEFLAT
THREAD SERIESUNF
NOMINAL THREAD SIZE0.312 INCHES IN
WIDTH ACROSS FLATS0.495 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
MATERIALSTEEL OVERALL
THREAD CLASS2B
NUT STYLEHEXAGON
NUT HEIGHT0.277 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
15039Interchangeable
interchangeable cross-reference
interchangeable
11398Interchangeable
interchangeable cross-reference
interchangeable
GGG-D-751 TYCSZ39Interchangeable
interchangeable cross-reference
interchangeable
60-24-123Interchangeable
interchangeable cross-reference
interchangeable
15039DInterchangeable
interchangeable cross-reference
interchangeable
15039BInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2129684?
2129684 is a NUT,PLAIN,HEXAGON.
What parts can replace 2129684?
There are 17 known substitutes for 2129684: 15039, 11398, GGG-D-751 TYCSZ39 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2129684?
2129684 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-834-5523. 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