Silicon Bronze Wood Screws - Countersunk head square drive (27 sizes)

$0.43
25025

Solid bronze wood screw with a countersunk head and square drive. These are true woodscrew, so thicker in the shank and not prone to shearing off.

Their resistance to de-zinc-ification is also greater and therefore ideal for high quality marine work and under water use.

With screws, the larger the gauge number, the fatter the screw, for example 1" (25mm) x 8 guage is thinner than 1" (25mm) x 10 guage. With nails the opposite is true.

 

Gauge

Head OD (mm)

Countersink Height (approx mm)

Shank OD (mm)

Drive Size

Thread Length

4G

1/3 plain   -   2/3 threaded

5G

6G

6.4

2.4

3.4

1/4"

7G

7.1

2.4

3.7

1/4"

8G

7.9

2.9

4

5/16"

9G

9.3

3.4

4.6

3/8"

10G

9.1

3

4.7

3/8"

12G

10.4

3.9

5.3

7/16"

14G

11.8

4

6

1/2"

16G

13.1

4.5

6.6

1/2"

18G

15

5.3

7.3

9/16"

20G

15.2

5.3

8

9/16"

24G

18.2

6.3

9.3

9/16"