PartsTable
Technical Data Sheet
PartsTable / MRO / 20-3021
20-3021 ✓ 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 MICROCIRCUIT,DIGITAL is a the manufacturer industrial component. Key specifications include material: PLASTIC LOCATION NOT OTHERWISE SPECIFIED, nut_style: SLOTTED, HEXAGON, body_width: 0.240 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN, nut_height: 0.344 INCHES NOMINAL IN, body_height: 0.180 INCHES MAXIMUM IN, body_length: 0.685 INCHES MINIMUM AND 0.785 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-185-2151, 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→ 20-3021
NSN: 5310-00-185-2151
FSC: 5310
CAGE: 06853 — BENDIX COMMERCIAL VEHICLE SYSTEMS LLC DBA BENDIX COMMERCIAL VEHICLE SYSTEMS (USA)
SPECIFICATIONS
materialPLASTIC LOCATION NOT OTHERWISE SPECIFIED
nut_styleSLOTTED, HEXAGON
body_width0.240 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN
nut_height0.344 INCHES NOMINAL IN
body_height0.180 INCHES MAXIMUM IN
body_length0.685 INCHES MINIMUM AND 0.785 INCHES MAXIMUM IN
thread_class3B
thread_seriesUNF
overall_length14.750 INCHES NOMINAL IN
locking_featurePREVAILING TORQUE ALL METAL DESIGN
special_featuresDESCRIPTION: FUSEHOLDER, 600VAC/30A, DINRAIL, 1.25 X .25 FUSE VAC
thread_directionRIGHT-HAND
NSN5310-00-185-2151
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 20-3021 · 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 DIRECTION: RIGHT-HAND
•
THREAD CLASS: 3B
•
THREAD QUANTITY PER INCH: 24
•
NOMINAL THREAD SIZE: 0.312 INCHES IN
•
BEARING SURFACE TYPE: WASHER FACED
•
THREAD SERIES: UNF
•
MATERIAL: STEEL OVERALL
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS3B
THREAD QUANTITY PER INCH24
NOMINAL THREAD SIZE0.312 INCHES IN
BEARING SURFACE TYPEWASHER FACED
THREAD SERIESUNF
MATERIALSTEEL OVERALL
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
WIDTH ACROSS FLATS0.500 INCHES NOMINAL IN
NUT HEIGHT0.344 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
MC846LB2Interchangeable
interchangeable cross-reference
interchangeable
MIC946-5DInterchangeable
interchangeable cross-reference
interchangeable
75802-0034Interchangeable
interchangeable cross-reference
interchangeable
203021Interchangeable
interchangeable cross-reference
interchangeable
RJ-5028-60Interchangeable
interchangeable cross-reference
interchangeable
CA159Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 20-3021?
20-3021 is a MICROCIRCUIT,DIGITAL. It is classified as a MRO (MRO_GENERAL).
What parts can replace 20-3021?
There are 8 known substitutes for 20-3021: MC846LB2, MIC946-5D, 75802-0034 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 20-3021?
20-3021 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-185-2151. 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