PartsTable
Technical Data Sheet
305-80 ✓ Verified by PartsTable
Melissa & Doug · 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

Melissa & Doug Innovation Academy kid-powered projects encourage open-ended hands-on exploration and experimentation - - its STEM learning thats out of this world! With Planetary Orbiter, kids can build a working light-up model of the sun, earth, and moon to observe their orbits, while exploring natural science principles! Easy-to-follow illustrated instructions help kids eight and older build their project independently. Make discoveries in astronomy, lunar phases, and learn how the earths tilt creates seasons! The included Innovation Booklet enhances interactive learning long after the project is assembled. A portion of all sales of Innovation Academy products supports The Whitney Workshop in Hamden, Conn., which designs and teaches projects for kids and adults that blend art, science, and invention.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-350-5608, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
305-80
NSN: 5310-00-350-5608
FSC: 5310
CAGE: 73740 — TRW INC TRW COMMERCIAL STEERING DIV (USA)
SPECIFICATIONS
materialSTEEL COMP 1212 OVERALL
nut_styleHEXAGON
nut_height0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN
thread_class2B
thread_seriesUNF
special_featuresNON-INSULATED TERMINALS AND SPLICES; 22-8 AWG
thread_directionRIGHT-HAND
width_across_flats0.928 INCHES MINIMUM AND 0.948 INCHES MAXIMUM IN
nominal_thread_size0.625 INCHES IN
bearing_surface_typeCHAMFERED
thread_quantity_per_inch18
material_document_and_classificationQQ-S-633-CANC FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-00-350-5608
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 305-80 · Melissa & Doug ⚠ 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: 0.928 INCHES MINIMUM AND 0.948 INCHES MAXIMUM IN
THREAD SERIES: UNF
NOMINAL THREAD SIZE: 0.625 INCHES IN
THREAD QUANTITY PER INCH: 18
BEARING SURFACE TYPE: CHAMFERED
THREAD CLASS: 2B
THREAD DIRECTION: RIGHT-HAND
NUT HEIGHT: 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
WIDTH ACROSS FLATS0.928 INCHES MINIMUM AND 0.948 INCHES MAXIMUM IN
THREAD SERIESUNF
NOMINAL THREAD SIZE0.625 INCHES IN
THREAD QUANTITY PER INCH18
BEARING SURFACE TYPECHAMFERED
THREAD CLASS2B
THREAD DIRECTIONRIGHT-HAND
NUT HEIGHT0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN
NUT STYLEHEXAGON
MATERIALSTEEL COMP 1212 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
42843Interchangeable
interchangeable cross-reference
interchangeable
3B90031-105Interchangeable
interchangeable cross-reference
interchangeable
9476Interchangeable
interchangeable cross-reference
interchangeable
305-80Interchangeable
interchangeable cross-reference
interchangeable
C115Interchangeable
interchangeable cross-reference
interchangeable
148369Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 305-80?
305-80 is a CAPACITOR,FIXED,PAPER DIELECTRIC manufactured by Melissa & Doug.
What parts can replace 305-80?
There are 10 known substitutes for 305-80: 42843, 3B90031-105, 9476 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 305-80?
305-80 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-350-5608. This indicates validated use in U.S. government and defense supply chains.
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