Big Flat Head with Ribs Deck Self Drilling Screws
Product Description
Ceramic Silver coating
High Anti-Corrosion Performance
Countersunk Head Decking Screws
Torx Drive CSK Head
Size 3.9*50mm
Ruspert coated
Ceramic Coating
High performance anti-corrosion
500 Hrs up to 1800 Hrs NSS test no-rust
Steel C1022 Hardened (heating treated)
Packing: 1, 000 PCS per bag
Outer bucket, carton or DIY box options
Thread Dia. From 3.5 to 6mm
Length 10-300m
Detailed Photos
Recommended products
For more decking screws, drywall screws, chipboard screws,
Please visit us at 3W drywallscrews. Cn or selfdrillingscrews. Cn
For all self tapping screws and drilling screws!
More choice on deck screws, decking screws, chipboard screws, drywall screws
1. Material: C1022 steel, C1018, SS304, SS316, SS410
2. ZP, YZP, mechanical galvanizing, brass, bronze coating,
Dacromet or Ruspert coating
Coating color: Green, yellow, black, brown, red, navi green, blue, silver
3. Drive style: Pozi or cross recess, slotted, torx, square, socket
4. Head: CSK, pan head, flat head, buggle head
5. Standard: DIN7505, ANSI/JIS/GB
6. Packing: Blister bag, small box, bucket, plastic box, DIY box
More products information please visit us drywallscrews. Cn
Introduction of Drywall Screws, Gypsum Screws
Drywall screws are a kind of self tapping screws that used to install the drywall on walls or ceillings which are generally wood or metal framing members. For wood walls or ceillings, always using the coarse thread drywall screws, and for sheet metals or plasterwood walls, normally using fine threaded drywall screws ordrywall tek screws (with a drilling point).
Why need a drywall screw to install drywalls on a wood/metal walls or ceilling?
Firstly we shall know Drywall is a type of building material that made from gypsum and other minerals pressed between sheets of heavy paper. Using a drywall screw, there is no need to pre-drill holes, with its counter sunk head design (always in Phillips drive), the screw lies flush with the surface of the sheet, creating a smooth and even finish. It can minimize dimpling on the face of the walls while other nails may leave small holes in or divots in the drywall, and even goes loose over time. Drywall screws are threaded to grip both the drywall and the framing members tightly, and provide a much more secure and long-lasting installation over time. The countersunk head also helps prevent the drywall screw from breaking the paper surface. Drilling a drywall screw must have a tool known as drywall dimpler, which has an adjustable nose that can avoid tearing the paper on each sheet. After all the screws have been installed, the walls are finished using joint compound which is spread over both the screw holes and the joints between each sheet. Once the compound dries, the walls can be sanded smooth and painted.
Product Parameters
Drywall screws are always come with black phosphated or zinc coated which helps to minimize rusting and corrosion as the screws are exposed to wet joint compound or paint.
| Size |
PCS/CTN |
USD/Mpcs |
| 3.0X12 |
60,000 |
$0.98 |
| 3.0X16 |
50,000 |
$1.15 |
| 3.0X20 |
40,000 |
$1.43 |
| 3.0X25 |
32,000 |
$1.65 |
| 3.5X13 |
42,000 |
$1.30 |
| 3.5X16 |
32,000 |
$1.65 |
| 3.5X20 |
26,000 |
$2.02 |
| 3.5X25 |
24,000 |
$2.28 |
| 3.5X40 |
15,000 |
$2.45 |
| 3.5X50 |
13,000 |
$3.07 |
| 4.0X20 |
22,000 |
$1.78 |
| 4.0X25 |
18,000 |
$2.22 |
| 4.0X40 |
12,000 |
$3.25 |
| 4.0X50 |
10,000 |
$4.03 |
| 4.0X60 |
8,000 |
$4.71 |
| 4.5X40 |
9,000 |
$4.28 |
| 4.5X50 |
8,000 |
$5.18 |
| 4.5X60 |
6,000 |
$5.92 |
| 4.5X70 |
6,000 |
$6.65 |
| 5.0X40 |
8,000 |
$5.12 |
| 5.0X50 |
6,000 |
$6.41 |
| 5.0X60 |
5,000 |
$7.44 |
| 5.0X70 |
5,000 |
$8.40 |
| 5.0X80 |
4,000 |
$9.66 |
| 5.0X100 |
3,500 |
$11.78 |
| 6.0X50 |
4,000 |
$9.71 |
| 6.0X60 |
3,500 |
$11.10 |
| 6.0X70 |
3,000 |
$12.83 |
| 6.0X80 |
2,600 |
$14.61 |
| 6.0X100 |
2,000 |
$17.94 |
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