PartsTable
Technical Data Sheet

4/4-20 — RESISTOR,FIXED,WIRE WOUND,INDUCT

✓ Government record, cited
Melissa & Doug · MRO · MRO_GENERAL
PRODUCT OVERVIEW

4/4-20: RESISTOR,FIXED,WIRE WOUND,INDUCT.

Climb aboard the Alphabet Express! This large floor puzzle for kids features whimsical and colorful animals from an alligator to a zebra. It's made of durable cardboard pieces that stand up to play after play.

You’ll need lots of space to put together this beautifully illustrated 27-piece puzzle that's over 10 feet long once it's assembled! The extra-thick jigsaw pieces are built to last, and their easy-clean surface keeps the puzzle looking new, making cleanup a breeze. Children will love the thick puzzle pieces that are easy to handle and put together.

The finished puzzle displays beautiful original artwork of the Alphabet Express that's both visually stimulating and educational. Our kids' Alphabet Express puzzle is designed to help children practice their letters while developing problem-solving skills, shape recognition, and hand-eye coordination. The Alphabet Express jigsaw puzzle makes a great gift for kids ages three and older for lots of hands-on screen-free fun.

This product i This part is cataloged in the U.S. Government catalog under NSN 5315-00-010-3906, indicating validated use in U.S. government and defense logistics supply chains.

WHERE IT FITS
MRO→ MRO_GENERAL→ 4/4-20
NSN: 5315-00-010-3906
NIINs: 000103906, 000170797, 000317634, 001000637, 002550449, 003394420, 004444837, 005724622, 007309831, 008011708, 008011709, 008402666, 008402669, 009334664, 009469643, 010661872, 010791876, 011227341, 011960976, 012168561, 012317056, 014261903, 014312718, 014655288, 015557086, 017173425
FSC: 5315 — Nails, Machine Keys, and Pins
CAGE: 23382 — FWD SEAGRAVE HOLDINGS LP (USA)
SPECIFICATIONS
special_featuresDESCRIPTION 4 X 4 X 20 INCHES, NEXT HIGHER ASSEMBLY AIRFIELD RESPONSE APPLIANCE (ARA) IN
part_name_assigned_by_controlling_agencyWEDGE
NSN5315-00-010-3906
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 4/4-20 · 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
•
HARDNESS RATING: 10.0 ROCKWELL C MINIMUM OVERALL
•
STARTING EDGE SHAPE: STRAIGHT
•
STYLE DESIGNATOR: ROUND BOTTOM
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CIRCLE DIAMETER: 0.740 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
•
KEY HEIGHT: 0.308 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
•
KEY SIZE DESIGNATION: WOODRUFF 8
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
HARDNESS RATING10.0 ROCKWELL C MINIMUM OVERALL
STARTING EDGE SHAPESTRAIGHT
STYLE DESIGNATORROUND BOTTOM
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-633 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
CIRCLE DIAMETER0.740 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN
KEY HEIGHT0.308 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN
KEY SIZE DESIGNATIONWOODRUFF 8
MATERIALSTEEL OVERALL
THICKNESS0.156 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 7
103906Reference document
Same NSN cross-reference
Reference document — Secondary reference
2165AReference document
Same NSN cross-reference
Reference document — Secondary reference
Z28Reference document
Same NSN cross-reference
Reference document — Secondary reference
910184Reference document
Same NSN cross-reference
Reference document — Secondary reference
BGAX9AReference document
Same NSN cross-reference
Reference document — Secondary reference
403054Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4/4-20?
4/4-20 is a RESISTOR,FIXED,WIRE WOUND,INDUCT manufactured by Melissa & Doug. It is classified as a MRO (MRO_GENERAL).
What parts can replace 4/4-20?
There are 7 known substitutes for 4/4-20: 103906, 2165A, Z28 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4/4-20?
4/4-20 is cataloged in the U.S. Government catalog under NSN 5315-00-010-3906. This indicates validated use in U.S. government and defense supply chains.
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