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BCP FastenersScrew Thread Gauge | Metric and SAE | Recommends Drill Bit & Tap Size (BCP675)

Q: Do the holes have threads so you can screw in a bolt?

Yes. The gauge is a thin piece of plastic and each hole is threaded. There is, of course, a limited number of threads because the plastic is thin. I believe it should be used gently to avoid damaging plastic threads. I believe it will be useful for identifying whether a screw has one standard thread (such as 1/4-NC20) or another standard thread (such as 1/4-NF28), but I don't think it can be used to finely test accuracy of threads cut on a lathe. I have not had an occasion to use it yet.

Q: what is the thickness of this gauge?

My micrometer says it's about a quarter inch. The only caveat is it is a polymer gauge, good news is that means it's durable and can flex around truly messed up screws and bolts; the bad news is it's not super precise because it's not stainless or Ti. For example it might be hard to discern a 24 vs. 28 pitch thread, but in my experience in the machine shop it determines the right threading well especially when you are trying to match a screw that's broken, old or damaged.

Q: will this guage work for very small computer screws ?

Yes! The guage goes down to M1.4 which is much smaller than any fastener that your going to find in any computer. The guage also has inch sizes down to #0 (.060 inch). Mike

Q: Why do they show two different kinds of cards in the picture? One says "pitch" at the top right, and the other says "drill". Which one do we get?

The pitch is for metric screws.

4.5/5

Product ID: 513302539

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Details

Material
Plastic
Drive system
Hex
Head style
Hex
Exterior finish
Plastic
Thread size
0-80

📏Measures #0 to 3/4" coarse & fine threads

⚙️Recommends drill & tap sizes instantly

🛠️Dual Metric & SAE standards

Description

🛠️ Nail every project with precision — don’t get left behind!

BUILT TO LAST - Crafted from thick, durable plastic that withstands daily workshop wear and tear.
CLEAN READY - Smooth, oil- and grease-resistant surface ensures effortless maintenance and longevity.
POCKET SIZED POWER - Compact, lightweight design fits perfectly in your shirt pocket or tool drawer for on-the-go convenience.
ALL IN ONE COMPATIBILITY - Seamlessly switch between Metric and SAE measurements for versatile project needs.
PRECISION AT YOUR FINGERTIPS - Quickly identify screw sizes with unmatched accuracy to save time and avoid costly errors.

The BCP Fasteners Screw Thread Gauge (BCP675) is a durable, dual-standard tool designed to quickly and accurately measure screw sizes from #0 to 3/4" coarse and fine threads, covering 1.6mm to 16mm metric sizes. It also recommends the appropriate drill bit or tap size, featuring a smooth, oil-resistant surface and a compact form factor ideal for professionals and hobbyists alike.

Specifications

Manufacturer	BCP Fasteners
Part number	BCP675
Item Weight	9.07 g
Item model number	BCP675
Size	1.6mm to 16mm
Material	Plastic
Shape	Rectangular Prism
Item Package Quantity	1
Number Of Pieces	1
Head Style	Hex
Measurement System	Metric
Included components	Tool Organizers, Tool Trays
Batteries Included?	No
Batteries Required?	No

Have a Question? See What Others Asked

Do the holes have threads so you can screw in a bolt?

what is the thickness of this gauge?

will this guage work for very small computer screws ?

Why do they show two different kinds of cards in the picture? One says "pitch" at the top right, and the other says "drill". Which one do we get?

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ravi S.

I loved the variety of products available. Will definitely shop again.

2 months ago

Rajesh P.

Customer service was outstanding when I had questions about the product.

2 days ago

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago