Grade 8.8 Hex Head Screws High Tensile Strength Fastener for Heavy Duty
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- Supplier: Dongguan Vedali Hardware Co. Ltd.
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Product Overview
Description
Grade 8.8 Hex Head Screws High Tensile Strength Fastener for Heavy Duty
Product Description
Hex head black screw bolt is made of high tensile strength alloy steel material with heat treatment grade 8.8 for heavy duty purpose , flat point and standard metric threads to under head
High tensile strength hex head bolt is normally plated in black zinc or black oxide for coating with resistant corrosion , and that make screws provided more service .
There is a strength chamfer step under head that will be sunkened into material and offer locking screws .
Technical Data
Items | Description | Remark | Picture | |
Material | Steel | 8.8 |
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Finish / Plating | Zinc | Black | ||
Hardness | 45 | HRC | ||
Color | Black |
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Standard | DIN 933 |
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Dimensions | Thread dia. | M8 | Head dia. | 12.5 |
Full length | 35 | Head height | 4.5 | |
Pitch | 1.25 | Head socket | Hex | |
Product Features
1 . High tensile strength
Hex head screws with grade 8.8
2 . Easy installation
Standard threads and simple head design for easy opeartion .
3. Not easy to be broken
Harden material and good mechanical performance ..
4 . Not easy to be rusted
Black zinc plated on surface .
5 . No burrs or scratch .
Tips for application
1 . Operated by hex head screw by spanner or hex socket .
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2 . Not suitalbe for damp or chemical instalation .
3 . Pre-drilled hole is needed .
Product Application
Black high tensile strength hex head screws are used for machinery or building etc .
How we pack
Normal packing
1. In bulk : Polybag ( 1-5 kgs) and cartons (8-20 kgs ) , 0.01 CBM / CTN
2. Boxes : Box ( 1-3 kgs) and cartons ( 5-15 kgs ) , 0.01 CBM / CTN
3. All cartons to a pallet ( 1X1.2 m )
4. Customized packing |  |
Note : Objects showed in picture are only for reference , not stand for described items .
Optional Products
We manufacture various hardware parts , you can find and click following descriptions to see more items .
Screws
| Various standard and non-standard fastener screws with qualified materials for different applications . |
Nuts and bolts | High tensile strength bolts nuts for engineering projects . |
Washers and spacers | Different materials washers and spacers for mechanical and clectronic parts |
Fastener Pins | Precise mechanical tolerances and good quality for industry . |
Plastic Parts | Customized manufacturing service and top materials for communication and electronics and auto etc . |
Quality Guarantee
Precise testing equipments and tools for hardness , dimensions , corrosion resistance and pass rate etc . our tolerance for tools is up to 0.005 mm . | All products are compliance with RoHS and REACH standards | |
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Note : We are available for customized requests on quality
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Production Capacity
Stamping parts with complicated designs , min. tolerances to 0.01mm (0.0004 inch ) , monthly capacity ups to 100 tons .
Availabe material : 1. Carbon steel 2. Brass 3. Aluminum 4. Stainless steel 5. Plastic 6. Various alloy steel eg. titanium alloy . |
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 | Precise turning machines and CNC , tolerances are up to 0.01 and 0.008 mm for limitaiton . 5 million pcs monthly capacity .
Availabe material :
1. Carbon steel 2. Brass 3. Aluminum 4. Stainless steel 5. Plastic 6. Various alloy steel eg. titanium alloy .
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Assorted fastener machines to make different screws , bolts , nuts and pins etc . Diameter from M0.8 to M30 . Monthly capacity ups to 300 tons .
Availabe material : 1. Carbon steel 2. Brass 3. Aluminum 4. Stainless steel 5. Plastic 6. Various alloy steel eg. titanium alloy . |  |
Warm Tips
If you are interesting in black zinc hex head screws , please contact us via email or phone , we will get back to you within 12 hours , Thank you !
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