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.

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.

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

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.

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BCP Fasteners Screw Thread Gauge SAE Metric w/Drill and Tap Size Chart

BCP Fasteners Screw Thread Gauge SAE Metric w/Drill and Tap Size Chart

Product ID: 92271026

Details

Exterior Finish
Plastic
Head Style
Round
Material
Plastic
Point Style
Fein
Thread Size
0-80

📏Dual SAE & Metric sizes

⏱️Fast identification

🛠️Drill & tap size guide

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Description

🛠️ Nail every thread, every time — the ultimate fastener sidekick!

COMPACT PORTABLE - Lightweight design fits perfectly in your tool chest or pocket—always ready when you are.
SPEEDY SCREW SIZING - Instantly identify fastener threads from #0 to 3/4" and 1.6mm to 16mm—no more guesswork.
DURABLE CLEAN READY - Crafted from tough, oil-resistant plastic that withstands shop grime and cleans up effortlessly.
BUILT IN DRILL TAP REFERENCE - Integrated size chart recommends exact drill bit and tap sizes, streamlining your workflow.
UNIVERSAL THREAD COMPATIBILITY - Supports both coarse and fine threads in SAE and Metric standards for versatile workshop use.

The BCP Fasteners Screw Thread Gauge is a precision tool designed for quick and accurate identification of screw threads in both SAE and Metric sizes, ranging from #0 to 3/4" and 1.6mm to 16mm. Featuring a built-in drill and tap size chart, it simplifies tool selection for professionals and DIYers alike. Made from durable, grease-resistant plastic, this compact gauge is built to endure tough workshop conditions while remaining easy to clean and store.

Specifications

ASIN	B07K7W3NQQ
Best Sellers Rank	#19,240 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #23 in Thread Gauges
Brand	BCP Fasteners
Compatible Groove Diameter	0.75 inches
Customer Reviews	4.6 4.6 out of 5 stars (2,862)
Drive System	External Hex
Exterior Finish	Plastic
Fastener Size	No. 0
Fastener Type	Machine Screw
Finish Types	Uncoated
Global Trade Identification Number	00688938509163
Head Type	Flat
Item Diameter	1.6 millimeters
Item Highlight	Metric & SAE, #0 to 3/4" & 1.6mm to 16mm, Coarse & Fine Thread, Drill Bit & Tap Reference, Hard Plastic, Easy-Clean (BCP675)
Item Weight	9.07 g
Manufacturer	BCP Fasteners
Material Type	Plastic
Metal Type	Plastic
Model	BCP675
Number Of Items	1
Number of Packs	1
Number of Pieces	1
Part Number	BCP675
Screw Head Style	Round
Screw Point Style	Fein
Set Screw Thread Type	Metric
Size Name	1.6mm to 16mm
Thread Class	coarse fine
Thread Coverage	Partially Threaded
Thread Size	0-80
Thread Style	Right Hand, Coarse
Thread Type	Unc, Unf
UPC	688938509163
Unit Count	1 Count

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$20.93

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

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TrustScore 4.5 | 7,300+ reviews

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