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Q: I cant figure out how to find the size I need. What is the size 10 mean on the nut sizer part? I need to find a tap for a size 10 hole. Thanks

Howdy Michael. The 10 corresponds to a number 10 machine screw. According to the Standard US Machine Screw Sizes, a number 10 comes in two thread sizes: a 10-32 and a 10-24. The 32 and 24 refer to the number of threads per inch. So, if you've used the gauge and determined you have a #10 screw, you'll then need to decide if you need the "fine" thread, 32 or the "coarse" thread, 24. Your local hardware store could help you determine which you need and what tap size you'll need.

Q: Is it both SAE and Metric?

Yes it is both metric and SAE. On the backside it also has United States Thread Pitch and Metric Thread Pitch. Both Inch and mm bolt length are on longer sides. Bolt dia. goes from 3 to 22 metric and 1" to 1/4" SAE. The shoulder posts for nuts is more limited but has both metric and SAE.

Q: what is the smallest and largest sizes?

SAE screw = 1 inch to #4 Metric screw = 22mm to 3mm SAE nut = 5/8 inch (no gauge for metric nuts) Screw metric pitch from 0.70mm to 2.00mm Screw SAE pitch from 10TPI to 24TPI

Q: Are you able to use this as a drill gauge, or would I need a separate gauge for that?

No, you need a separate gauge for that.

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🔧 Size Matters: Get it Right Every Time!

DURABLE DESIGN - Crafted from hard plastic, built to withstand the elements.
PRECISION SIZING - Quickly size bolts, screws, and nuts with ease.
COMPACT LIGHTWEIGHT - Easily portable at just 45.36 grams.
OIL GREASE RESISTANT - Stay clean and efficient, no matter the job.
DUAL MEASUREMENT SYSTEM - Ruler marked in both inches and millimeters for versatility.

The Boltsize-It Gauge in blue is your go-to tool for accurately sizing bolts, screws, nuts, and twist drills. With a dual measurement system marked in inches and millimeters, this durable, water-resistant gauge is designed for professionals who demand precision and reliability in their work.

Have a Question? See What Others Asked

I cant figure out how to find the size I need. What is the size 10 mean on the nut sizer part? I need to find a tap for a size 10 hole. Thanks

Is it both SAE and Metric?

what is the smallest and largest sizes?

Are you able to use this as a drill gauge, or would I need a separate gauge for that?

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