Silicon Bronze Wood Screws - Countersunk head square drive (29 sizes)
$0.52
(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" |