DIN1662 Hex Head Flange Bolts-Small Series
Product: DIN1662 Small-Series Hexagon Flange Bolts
Mechanical Grades: 4.6, 4.8, 5.6, 5.8, 8.8, 10.9, 12.9; A2-70, A4-70, A4-80
Surface Treatment: Zinc plating (yellow zinc, blue zinc, tint rinse), black finish, phosphatizing with oil, zinc phosphating, hot-dip galvanizing (HDG), Dacromet, Geomet
Material: Carbon steel
Markets for Export: United States, Japan, Australia, European countries and other regions
Custom specifications available upon request
DIN EN 1662 miniature hexagon flange bolts belong to fastener products conforming to the DIN EN 1662 European specification. This standard defines dimension limits, tolerances, material criteria and performance criteria for hexagon flange bolts. Featuring a compact hex head integrated with a flange face, this bolt design enlarges the contact area between the fastener and connected components. As a result, it helps strengthen connection stability and overall assembly reliability.
Pictures



Product drawing
Product Specification
Size | M5 | M6 | M8 | M10 | M12 | M14 | M16 | |
P | 0.8 | 1.0 | 1.25 | 1.5 | 1.75 | 2.0 | 2.0 | |
b | l<125 | 16 | 18 | 22 | 26 | 30 | 34 | 38 |
125<l<200 | / | / | 28 | 32 | 36 | 40 | 44 | |
l>200 | / | / | / | / | / | / | 57 | |
c min | 1 | 1.1 | 1.2 | 1.5 | 1.8 | 2.1 | 2.4 | |
da | F max | 5.7 | 6.8 | 9.2 | 11.2 | 13.7 | 15.7 | 17.7 |
U max | 6.2 | 7.5 | 10.0 | 12.5 | 15.2 | 17.7 | 20.5 | |
dc max | 11.4 | 13.6 | 17.0 | 20.8 | 24.7 | 28.6 | 32.8 | |
ds | max | 5.0 | 6.0 | 8.0 | 10.0 | 12.0 | 14.0 | 16.0 |
min | 4.82 | 5.82 | 7.78 | 9.78 | 11.73 | 13.73 | 15.73 | |
dv | 5.5 | 6.6 | 8.8 | 10.8 | 12.8 | 14.8 | 17.2 | |
dw min | 9.4 | 11.6 | 14.9 | 18.7 | 22.5 | 26.4 | 30.6 | |
e min | 7.59 | 8.71 | 10.95 | 14.26 | 17.62 | 19.86 | 23.15 | |
k max | 5.6 | 6.9 | 8.5 | 9.7 | 12.1 | 12.9 | 15.2 | |
kw min | 2.3 | 2.9 | 3.8 | 4.3 | 5.4 | 5.6 | 6.8 | |
lf max | 1.4 | 1.6 | 2.1 | 2.1 | 2.1 | 2.1 | 3.2 | |
r1 min | 0.2 | 0.25 | 0.4 | 0.4 | 0.6 | 0.6 | 0.6 | |
r2 max | 0.3 | 0.4 | 0.5 | 0.6 | 0.7 | 0.9 | 1.0 | |
r3 | max | 0.25 | 0.26 | 0.36 | 0.45 | 0.54 | 0.63 | 0.72 |
min | 0.10 | 0.11 | 0.16 | 0.20 | 0.24 | 0.28 | 0.32 | |
r4 | 4.0 | 4.4 | 5.7 | 5.7 | 5.7 | 5.7 | 8.8 | |
s | max | 7.0 | 8.0 | 10.0 | 13.0 | 16.0 | 18.0 | 21.0 |
min | 6.78 | 7.78 | 9.78 | 12.73 | 15.73 | 17.73 | 20.67 | |
v | max | 0.15 | 0.20 | 0.25 | 0.30 | 0.35 | 0.45 | 0.50 |
min | 0.05 | 0.05 | 0.1 | 0.15 | 0.15 | 0.2 | 0.25 | |
Support customer customization | ||||||||
Some introduction about our company
Testing Equipment
Jinan Star Fastener prioritizes product quality with a full suite of quality inspection instruments, including tensile testers, torque measuring devices, metallographic microscopes, optical projectors, salt spray cabinets and coating thickness gauges. These devices verify fasteners’ tensile strength and elongation to assess their mechanical performance, enabling rigorous quality control covering every stage from raw material input to finished goods.
Production equipment
To satisfy diverse client requirements, our factory has deployed an array of sophisticated production machinery, including multi-station cold formers, thread rollers, heat treatment systems, shot blasters, sandblasters, electroplating lines and other surface treatment units, alongside fully automated packaging gear. This equipment boosts production efficiency while maintaining consistent and stable product quality.
Packing
FAQ
1. How do you control the product quality?
DIN EN1662 is a strict standard, and Jinan Xing follows a series of quality control measures during the production process. You can be assured of choosing bolts that meet this standard. If you need it, we will provide relevant quality certification documents, such as test reports, certificates of compliance, etc.
2. Could you send me a quote?
The price of bolts is usually related to factors such as their materials, specifications, production processes, etc. According to customer customization needs, the prices of different products are also different. You can consult our professional sales team for specific prices.
3. When will you deliver the goods after I place the order?
We will arrange the production of the order as soon as possible. The specific delivery date can be determined through negotiation with the manufacturer and clearly stated in the contract.
4.How do I trust you?
You can understand the credibility of a manufacturer by checking its customer reviews, cooperation cases, and other information. At the same time, you can also communicate with manufacturers to understand their corporate culture, business philosophy, etc.







