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Fastene www.union-fastener.com
Bi-metal Series 01
Solar Series 02
Construction Series 03
Special OutdoorSeries 06
Type Selection 07
Hangzhou Union Hardware Co.,Ltd
Address:4thFloor,No.58,XiangshanRoad,,ShidaiAvenue,WenyanTown, 311258,Xiaoshan,Hangzhou,Zhejiang,China.
Phone:+86-571-83828818/8819
http://www.union-tool.com www.union-fastener.com
https://union-hardware.en.made-in-china.com
E-mail:info@union-hardware.com
Bi-metal Series
Self Drilling Bi-metal Screws
| Diameter (mm) | Length (mm) | Thread Size | Drill Point |
| 4.8 | 25-220 | 16 | #1,#2,#3,#5 |
| 5.5 | 25-300 | 14 | #1,#2,#3,#5 |
| 6.3 | 19-300 | 14 | #1,#2,#3,#5 |
Bi-metal Self-Drilling Screws
1000\~1800RPM
| Diameter | Length | Thread Size | Drill Point |
| 6.3/5.5 | 25-50 | 14 | #1,#2,#3,#5 |
| 6.3/5.5 | 60-300 | 14 | #1,#2,#3,#5 |
Bi-metal Concrete Bolts
| Diameter | Length (mm) |
| 6 | 75-140 |
| 8 | 55-150 |
| 10 | 105-150 |
| 12 | 125-135 |
s
Bugleheadincreasespull-down strength
Head Types
DIFFERENTTYPESOFSCREWS DIFFERENTSPECIFICATIONS
Thread Types
StainlessSteelA2A4C1CarbonSteel8.810.912.9
Surface treatment
| Types | Application | Spray TestHours | Characteristics |
| Zine,Electroplated | All Metal | 96 Hours | Lower cost and bright surface |
| Hot Dip Galvanized | All Metal | 96 Hours | Low corrosionrate and resistsmechanical damage |
| Electro Nickel | All Metal | 200 Hours | Flexibility in plating volume and thickness |
| Mechanical Plating | Steel | 1000-1500Hours | Smooth finishwith high anti-corrosiongrade |
| Black Oxide | All Metal | 3-5 Hours | Cheap |
| Dacromet | Steel | 1000 Hours | Pollution-free ceramic coating |
| Ruspert | StainlessSteel/Steel | 1000 Hours | Excellent adhesion |
| Passivation | StainlessSteel | Dissolvediron contaminants | |
| Wax | StainlessSteel& Plated Fasteners | Fair,used as a lubricate | Used for ease of assembly |
