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110921 ✓ 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 GEARSHAFT,MULTIPLE GEARS is a the manufacturer industrial component. Key specifications include insert: NOT INCLUDED, special_features: USED ON E-3A AIRCRAFT A. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-011-0921, 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
110921
NSN: 5310-00-011-0921
FSC: 5310
CAGE: 21450 — ARMY WEAPONS COMMAND ATTN AMSWE-REE-S (USA)
SPECIFICATIONS
insertNOT INCLUDED
special_featuresUSED ON E-3A AIRCRAFT A
NSN5310-00-011-0921
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 110921 · 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: 0.3020 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM IN
•
BEARING SURFACE TYPE: FLAT
•
NOMINAL THREAD SIZE: 0.138 INCHES IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
THREAD QUANTITY PER INCH: 32
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND 1 STYLE AND A GRADE AND C GROUP
•
NUT STYLE: HEXAGON
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
WIDTH ACROSS FLATS0.3020 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM IN
BEARING SURFACE TYPEFLAT
NOMINAL THREAD SIZE0.138 INCHES IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH32
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 1 STYLE AND A GRADE AND C GROUP
NUT STYLEHEXAGON
MATERIALSTEEL OVERALL
SURFACE TREATMENTNICKEL OVERALL
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 18
103089Interchangeable
interchangeable cross-reference
interchangeable
340543Interchangeable
interchangeable cross-reference
interchangeable
BBKX2DInterchangeable
interchangeable cross-reference
interchangeable
110922Interchangeable
interchangeable cross-reference
interchangeable
110923Interchangeable
interchangeable cross-reference
interchangeable
FFN836GPCTYPE2STYLE1GRADEAInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 110921?
110921 is a GEARSHAFT,MULTIPLE GEARS.
What parts can replace 110921?
There are 18 known substitutes for 110921: 103089, 340543, BBKX2D and 15 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 110921?
110921 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-011-0921. 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