Hex Washer Head Concrete Screws Blue Steel 7.5mm Fastener for Cement Board
Hex Washer Head Concrete Screws Blue Steel 7.5mm Fastener for Cement Board
Concrete Screws are also named as masonry screws ,Hex washer head with a slot socket and square cone point with type BP , Concrete screw has a hi-low threads design on the shaft that can drill material more quickly and lock screws into material tightly .
Typical Features
◆ Harden material
◆ High tensile strength
◆ Cutting threads
◆ Hi-low threads
◆ Square cone point
Specification
| Specification | Head dia. | Thread dia. | Length | Pitch |
| d1 | D | d1 | L | P |
| 7.5 | 11 ~ 12 | 7.3 ~ 7.6 | 36 | 2.4 ~ 2.8 |
| 7.5 | 11 ~ 12 | 7.3 ~ 7.6 | 42 | 2.4 ~ 2.8 |
| 7.5 | 11 ~ 12 | 7.3 ~ 7.6 | 52 | 2.4 ~ 2.8 |
| 7.5 | 11 ~ 12 | 7.3 ~ 7.6 | 62 | 2.4 ~ 2.8 |
| 7.5 | 11 ~ 12 | 7.3 ~ 7.6 | 72 | 2.4 ~ 2.8 |
| 7.5 | 11 ~ 12 | 7.3 ~ 7.6 | 80 | 2.4 ~ 2.8 |
| 7.5 | 11 ~ 12 | 7.3 ~ 7.6 | 90 | 2.4 ~ 2.8 |
| 7.5 | 11 ~ 12 | 7.3 ~ 7.6 | 102 | 2.4 ~ 2.8 |
| 7.5 | 11 ~ 12 | 7.3 ~ 7.6 | 112 | 2.4 ~ 2.8 |
| 7.5 | 11 ~ 12 | 7.3 ~ 7.6 | 120 | 2.4 ~ 2.8 |
| 7.5 | 11 ~ 12 | 7.3 ~ 7.6 | 132 | 2.4 ~ 2.8 |
| 7.5 | 11 ~ 12 | 7.3 ~ 7.6 | 142 | 2.4 ~ 2.8 |
| 7.5 | 11 ~ 12 | 7.3 ~ 7.6 | 152 | 2.4 ~ 2.8 |
| 7.5 | 11 ~ 12 | 7.3 ~ 7.6 | 182 | 2.4 ~ 2.8 |
| 7.5 | 11 ~ 12 | 7.3 ~ 7.6 | 190 | 2.4 ~ 2.8 |
| 7.5 | 11 ~ 12 | 7.3 ~ 7.6 | 200 | 2.4 ~ 2.8 |
Installation
1 , Drilling a pre-hole in material with pre-depth for concrete screw ( see details in table )
2 , Inserting concrete screw into hole and screwing it in a electric drill
| Specification | Length | Pre-depth |
| 7.5 | 36 | 2.3 ~ 3.15 |
| 7.5 | 42 | 2.3 |
| 7.5 | 52 | 2.3 |
| 7.5 | 62 | 2.3 |
| 7.5 | 72 | 2.3 |
| 7.5 | 80 | 2.3 |
| 7.5 | 90 | 2.3 |
| 7.5 | 102 | 2.3 |
| 7.5 | 112 | 2.3 |
| 7.5 | 120 | 2.3 |
| 7.5 | 132 | 2.3 |
| 7.5 | 142 | 2.3 |
| 7.5 | 152 | 2.3 |
| 7.5 | 182 | 2.3 |
| 7.5 | 190 | 2.3 |
| 7.5 | 200 | 2.3 |
Plating
Concrete screws normally are plated in zinc with yellow or blue or white color , and sometimes dacromet for applications in heavy corrosion surroundings like sea .
Zinc
The most popular plating for the most products , maks parts are bright and smooth and resistant corrosion
Dacromet
Grey color with High corrosion resistance , no hydrogen embrittlement , heat resistance , easy to plated more , eco-friendly etc
Materials
Carbon steel with model 1018 , 1022 , 1035 , 1045 , SCM 435 and 40CRO
Stainless steel with model SUS 201 , SUS303 , SUS 304 ,SUS 316 , SUS 416 ,SUS 430 and SUS 420 .
Applications
Concrete screws are used for buildings like window frame , door etc that into concrete material .
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