Blue Metal Siding Screws Thread Cutting Hex Washer Head 1/4 Fastener Galvanized
Siding screw is one of popular fastener screws , it is similar with roofing screw or self tapping screw with hex washer head or thread cutting screws , siding screw is designed for fastening wooden or plastic or chipboard objects that are widely used in furniture and building .
Generally , siding screw has a hex washer head and painted in different color like white , black , green . red and yelllow etc . self tapping threads with sharp point and a cutting through 3 or 5 threads on the point for quick cuting material and more steady fastening purpose . and a metal bounded EPDM washer is assembled to under head that can protect screw to be damaged by rain or sand and provide more good fastening .
Material
Siding screws are made from harden carbon steel and stainless steel or alloy steel are available as well for more options of applications .
Finish
For the most applications ,siding screws are coated in zinc , nickel and painted head , for some strict request like resistance of corrosion , dacromet is a good choice .
Normally , screws can be passed 48 hours and max 96 hours for zinc plated during salty sprey testing .
Basic dimensions
| Thread specification |
|
| Thread length |
|
| Head height |
|
| Washer diameter |
|
| Pitch |
|
| Head width |
|
Torque
Siding screws have to be operated under given torque when they are to be installed . different specifications different torques
| d |
4# |
5# |
6# |
7# |
8# |
10# |
12# |
14# |
| Thread |
A |
14 |
21 |
28 |
35 |
45 |
56 |
96 |
145 |
| AB |
14 |
21 |
28 |
35 |
45 |
65 |
102 |
165 |
Physical performance
| Hardness ( HV ) |
450 |
Yield Strength ( Mpa ) |
210 |
Elongation ( % ) |
35 |
| Tensile Strength ( Mpa ) |
320 |
Torque |
9 |
Reduction Area ( % ) |
45 |
Packing
4 kgs each bag and 5 bags each carton for normal packing , and we provide custom packing for special requirements .
Tips for use
1 . Far from acid or alkalinity etc checmical conditions for longer service .
2 . Not available for heavy duty application .
3 . Do not put over torque on siding screws during operation .
Product Tags:
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Blue Metal Siding Screws Thread Cutting Hex Washer Head 1/4 Fastener Galvanized Images
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