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Categories | Self Tapping Screw |
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Brand Name: | YongBiao |
Model Number: | Self Tapping Screw |
Certification: | ISO9001/16949 |
Place of Origin: | ZheJiang China |
MOQ: | 10000 |
Price: | FOB NingBo 0.003-0.2USD |
Payment Terms: | T/T |
Supply Ability: | 500tons/month |
Delivery Time: | 7-25days |
Packaging Details: | Carton Box/Pallet/Customized |
Standard: | DIN968 |
Material: | Carbon steel |
Size: | ST2.9-ST6.3 |
Surface treatment: | zinc plated |
Grade: | 8.8 |
Sample: | for free in stock,3-5 FREE samples but not included freight,ok |
Application: | electronics,furniture,thin sheet metal,Thermoplastic,Plastic |
Thread type: | self tapping screw,thread forming thread |
Company Info. |
NINGBO YONGBIAO FASTENER CO.,LTD |
Verified Supplier |
View Contact Details |
Product List |
1.Products Details:
PWA cross - recessed pan - head self - tapping screws with washer and teeth are a type of fastener. The "P" in PWA represents the pan - head, "W" represents the washer, and "A" indicates the self - tapping thread. These screws are usually made of carbon steel or stainless steel, and can have surface treatments such as nickel - plating or galvanization. They are designed to be directly screwed into materials like metal, wood, or plastic without pre - drilling holes, forming internal threads by self - tapping, and achieving a firm fixing effect.
2.Key Features:
- Easy to Install:
With a cross - recessed design on the head, they can be easily
driven by a cross - head screwdriver or an electric screwdriver,
featuring flexible angle adjustment and high installation
efficiency.
- Washer Design:
The built - in washer increases the contact area with the fastened
material, which can evenly distribute pressure, prevent the screw
head from sinking into the material surface, and enhance the fixing
stability.
- Self - Tapping Function:
The thread is sharp and has a self - tapping feature. It can
penetrate the material and form threads by itself, simplifying the
installation process and being suitable for various non - threaded
hole materials.
- Tooth Design:
The teeth on the screw can enhance the gripping force, making the
screw more firmly fixed in the material, reducing the possibility
of loosening, and improving the mechanical connection strength.
- Good Versatility:
They can be used in a variety of scenarios, such as furniture
manufacturing, construction, and electronic equipment assembly, and
are suitable for fixing different materials.
- Corrosion Resistance:
When made of stainless steel or through surface treatments like nickel - plating and galvanization, they have good corrosion resistance, which can be used in different environmental conditions and has a long service life.
3.Technical Parameters
d | ST2.9 | ST3.5 | ST4.2 | ST4.8 | (ST5.5) | ST6.3 | |||
P | 1.1 | 1.3 | 1.4 | 1.6 | 1.8 | 1.8 | |||
a | MAX | 1.1 | 1.3 | 1.4 | 1.6 | 1.8 | 1.8 | ||
dk | MAX | 7.5 | 9 | 10 | 11.5 | 13 | 14.5 | ||
MIN | 6.92 | 8.42 | 9.42 | 10.8 | 12.3 | 13.8 | |||
k | MAX | 2.35 | 2.6 | 3.05 | 3.55 | 3.8 | 4.55 | ||
MIN | 2.1 | 2.35 | 2.75 | 3.25 | 3.5 | 4.25 | |||
c | MAX | 0.8 | 0.9 | 1.1 | 1.35 | 1.6 | 1.8 | ||
MIN | 0.6 | 0.7 | 0.9 | 1.05 | 1.2 | 1.4 | |||
r | MIN | 0.1 | 0.1 | 0.2 | 0.2 | 0.25 | 0.25 | ||
R | ≈ | 3.8 | 4.6 | 5.8 | 6.6 | 7.8 | 8.2 | ||
Slot Number | 1 | 2 | 2 | 2 | 3 | 3 | |||
M1 | Grade H | 3 | 4.2 | 4.6 | 5 | 6.5 | 7.1 | ||
Depth | Grade H | MIN | 1.35 | 1.4 | 1.8 | 2.26 | 2.49 | 3 | |
MAX | 1.8 | 2.03 | 2.46 | 2.87 | 3.15 | 3.66 | |||
M2 | Grade Z | 2.9 | 3.9 | 4.3 | 4.7 | 6.2 | 6.7 | ||
Depth | Grade Z | MIN | 1.58 | 1.47 | 1.88 | 2.28 | 2.51 | 3.02 | |
MAX | 1.83 | 1.93 | 2.34 | 2.74 | 2.97 | 3.48 | |||
y | reference value | C型 | 2.6 | 3.2 | 3.7 | 4.3 | 5 | 6 | |
F型 | 2.1 | 2.5 | 2.8 | 3.2 | 3.6 | 3.6 | |||
R型 | / | 2.7 | 3.2 | 3.6 | 4.3 | 5 |
4.Certificate Display
5.Production Process
6.Packaging and shipping Details
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