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🧲 Thread smarter, not harder — your ultimate magnetic tap drill sidekick!
The Useful Magnet Inch/Metric Size Guide is a 4" x 6" waterproof, magnetic chart designed for machinists and metalworkers. Featuring both UNC, UNF, ISO, NPT, and NPTF thread sizes, it offers precise tap drill recommendations in imperial and metric units. Its durable magnetic backing securely attaches to metal surfaces like CNC machines and toolboxes, while its waterproof and oil-resistant construction ensures longevity in demanding workshop conditions. Made in Canada, this chart is an essential tool for professionals and DIYers seeking accuracy and efficiency in threading operations.



| ASIN | B0CD9CGG8L |
| Best Sellers Rank | #240,794 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #293 in Science Education Charts & Posters |
| Brand | Useful Magnets |
| Brand Name | Useful Magnets |
| Color | White |
| Customer Reviews | 4.7 out of 5 stars 51 Reviews |
| Item Weight | 60 g |
| Manufacturer | Useful Magnets |
| Material | Plastic, Flexible Magnetic Sheeting |
| Material Type | Plastic, Flexible Magnetic Sheeting |
| Number of Items | 1 |
| Number of Packs | 1 |
| Number of Pieces | 1 |
| Part Number | IMUF4 |
| Shape | Rectangular |
| UPC | 601968836597 |
| Unit Count | 1 Count |
M**K
Easy to use
Clear numbers
R**S
Drill tap and die sizes
Easy to read and see what size of holes need to be drilled for a tap or type of steel rod to be died -threaded
L**R
My work
Very handy thx
B**Y
Drill card
Goodie
W**N
Great tool
Self explanatory
R**S
Just what I needed
Great, inexpensive set for lite use.
O**T
Drill size for tapping
Hang it right on the toolbox
L**E
Bonne qualité
Bonne visibilité
D**K
GOOD PRODUCT
GOOD PRODUCT
C**E
mesure de calcule complet
très efficace comme calcule et complet comme mesure
D**L
Très pratique
Bon prix et qualité
M**E
Magnetic
OK, but I did not know it was magnetic
Trustpilot
1 month ago
1 month ago