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PartsTable / MRO / 21854-4
21854-4 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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 SWITCH,CODE INDICATING WHEEL is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, nut_style: CAP, nut_height: 1.312 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), 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 5310-01-069-5240, 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
MRO→ MRO_GENERAL→ 21854-4
NSN: 5310-01-069-5240
FSC: 5310
CAGE: 83179 — JOY MFG CO AIR POWER GROUP MICHIGAN CITY PLANT (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
nut_styleCAP
nut_height1.312 INCHES NOMINAL IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
width_across_flats0.938 INCHES NOMINAL IN
nominal_thread_size0.625 INCHES IN
bearing_surface_typeWASHER FACED
thread_quantity_per_inch11
NSN5310-01-069-5240
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 21854-4 · 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
•
MATERIAL: COPPER ALLOY OVERALL
•
THREAD CLASS: 2B
•
THREAD QUANTITY PER INCH: 11
•
NOMINAL THREAD SIZE: 0.625 INCHES IN
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
BEARING SURFACE TYPE: WASHER FACED
•
NUT STYLE: CAP
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER ALLOY OVERALL
THREAD CLASS2B
THREAD QUANTITY PER INCH11
NOMINAL THREAD SIZE0.625 INCHES IN
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
BEARING SURFACE TYPEWASHER FACED
NUT STYLECAP
THREAD DIRECTIONRIGHT-HAND
WIDTH ACROSS FLATS0.938 INCHES NOMINAL IN
NUT HEIGHT1.312 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
21854-4Interchangeable
interchangeable cross-reference
interchangeable
2935-3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21854-4?
21854-4 is a SWITCH,CODE INDICATING WHEEL. It is classified as a MRO (MRO_GENERAL).
What parts can replace 21854-4?
There are 2 known substitutes for 21854-4: 21854-4, 2935-3. Substitute compatibility should be verified for your specific system.
What is the NSN for 21854-4?
21854-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-069-5240. 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