About Us

Customer Services

Customer Support

Regional Access

Legal & Policies

Social

Get the App

Point your camera to download the app

Customer support

We're available 24/7 to help you!

#14 x 1 (50 Pack) Hex Washer Head Self Drilling Screws (3/4" to 5" Available), Hex Drive, Flange Hex Self Tapping Screws, 410 Stainless Steel Sheet Metal Screws, No Pre-drilled Needs

Q: What do the #12 and #14 mean? I was told I need a 5/16 inch x 3 inch long

Dear Customer, the #12 and #14 mean the thread size. #12 means the thread size is about 5.2 to 5.5mm. #14 (thread size 6.0mm to 6.25mm). If you are looking for 5/16 x 3 inch long. I'm afraid you are not looking for self drilling screws because normally the largest size for hex washer head self drilling screw is #14. However the 5/16 screw thread size is 0.3125 inch, 7.9mm. Hope that could help you, Have a nice day.

Q: What drive size (5/16" or 3/8") do these #12 size 1 In long screws require?

It is 7mm, I thought they woul be your standard tek screw, but no. 7mm

Q: Will these work drilling through sheet metal covering wood beam?

I've only used them to go through wood attached to an aluminum frame which works well. You may need to drill a small pilot hole in the sheet metal first, as it's harder than the aluminum I am going through.

Q: Can I use these to attach wood 2 X 4's to 1/4" aluminum carport frame? Is 2 1/2" length appropriate for this use?

I would say yes. I used them to go through an aluminum ramp into the side of PT 2x4 to secure decking

4.5/5

Product ID: 634476830

Secure Transaction

Frequently Bought Together

Description

#14 x 1 (50 Pack) Hex Washer Head Self Drilling Screws (3/4" to 5" Available), Hex Drive, Flange Hex Self Tapping Screws, 410 Stainless Steel Sheet Metal Screws, No Pre-drilled Needs

Have a Question? See What Others Asked

What do the #12 and #14 mean? I was told I need a 5/16 inch x 3 inch long

What drive size (5/16" or 3/8") do these #12 size 1 In long screws require?

Will these work drilling through sheet metal covering wood beam?

Can I use these to attach wood 2 X 4's to 1/4" aluminum carport frame? Is 2 1/2" length appropriate for this use?

Common Questions

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Ayesha M.

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

5 days ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving over 300 million shoppers across more than 200 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

€ 79.28

Duties & taxes incl.

Cyprusstore

Free Returns

30 daysfor PRO membership users

15 dayswithout membership

Secure Transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Reema J.

Perfect platform for hard-to-find items. Delivery was prompt.

1 month ago

View all Trustpilot reviews