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Hexagon flange head screws conforming to DIN 6921 and ISO 1665 standards, featuring either smooth or serrated bearing surfaces, represent highly adaptable and dependable fastening solutions. Engineered for optimal clamping performance and uniform pressure distribution, these fasteners significantly reduce the potential for surface damage to assembled materials.
Product Overview
Hexagon flange head screws conforming to DIN 6921 and ISO 1665 standards, featuring either smooth or serrated bearing surfaces, represent highly adaptable and dependable fastening solutions. Engineered for optimal clamping performance and uniform pressure distribution, these fasteners significantly reduce the potential for surface damage to assembled materials.
The standardized specifications of DIN 6921 guarantee consistent dimensional accuracy and exceptional quality control, establishing these components as preferred choices for industrial and mechanical applications. The incorporated flange design provides an expanded contact area, substantially enhancing joint stability and connection integrity.
Manufactured in various material grades including galvanized steel and stainless steel variants, these flange screws demonstrate excellent corrosion resistance and durability, making them suitable for both interior applications and challenging outdoor environments. The selection of DIN 6921/ISO 1665 compliant hexagon flange screws ensures access to certified products that consistently meet rigorous international quality benchmarks.
Explore our comprehensive product range to identify the ideal fastening solution for your specific application requirements.
Product Details
Name | Hex Flange Bolts | Materials | Carbon Steel/Stainless Steel |
Standards | DIN6921 ISO1665 | Strength level | 4.8 8.8 10.9 12.9 A2-70 A4-70 A4-80 |
Size | M3-M50 | Surface finish | ZP\HDG\BLACK\Dacromet etc. |
Length | 15-500 | Samples | Available |
Product Parameters
| Screw Thread | M5 | M6 | M8 | M10 | M12 | M14 | M16 | M20 | ||||
| d | ||||||||||||
| P | Pitch | Coarse thread | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | ||
| Fine thread-1 | / | / | 1 | 1.25 | 1.5 | 1.5 | 1.5 | 1.5 | ||||
| Fine thread-2 | / | / | / | 1 | 1.25 | / | / | / | ||||
| b | L≤125 | 16 | 18 | 22 | 26 | 30 | 34 | 38 | 46 | |||
| 125＜L≤200 | / | / | 28 | 32 | 36 | 40 | 44 | 52 | ||||
| L＞200 | / | / | / | / | / | / | 57 | 65 | ||||
| c | min | 1 | 1.1 | 1.2 | 1.5 | 1.8 | 2.1 | 2.4 | 3 | |||
| da | Form A | max | 5.7 | 6.8 | 9.2 | 11.2 | 13.7 | 15.7 | 17.7 | 22.4 | ||
| Form B | max | 6.2 | 7.4 | 10 | 12.6 | 15.2 | 17.7 | 20.7 | 25.7 | |||
| dc | max | 11.8 | 14.2 | 18 | 22.3 | 26.6 | 30.5 | 35 | 43 | |||
| ds | max | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 20 | |||
| min | 4.82 | 5.82 | 7.78 | 9.78 | 11.73 | 13.73 | 15.73 | 19.67 | ||||
| du | max | 5.5 | 6.6 | 9 | 11 | 13.5 | 15.5 | 17.5 | 22 | |||
| dw | min | 9.8 | 12.2 | 15.8 | 19.6 | 23.8 | 27.6 | 31.9 | 39.9 | |||
| e | min | 8.71 | 10.95 | 14.26 | 16.5 | 17.62 | 19.86 | 23.15 | 29.87 | |||
| f | max | 1.4 | 2 | 2 | 2 | 3 | 3 | 3 | 4 | |||
| k | max | 5.4 | 6.6 | 8.1 | 9.2 | 11.5 | 12.8 | 14.4 | 17.1 | |||
| k1 | min | 2 | 2.5 | 3.2 | 3.6 | 4.6 | 5.1 | 5.8 | 6.8 | |||
| r1 | min | 0.25 | 0.4 | 0.4 | 0.4 | 0.6 | 0.6 | 0.6 | 0.8 | |||
| r2 | max | 0.3 | 0.4 | 0.5 | 0.6 | 0.7 | 0.9 | 1 | 1.2 | |||
| r3 | min | 0.1 | 0.1 | 0.15 | 0.2 | 0.25 | 0.3 | 0.35 | 0.4 | |||
| r4 | ≈ | 3 | 3.4 | 4.3 | 4.3 | 6.4 | 6.4 | 6.4 | 8.5 | |||
| s | max=nominal size | 8 | 10 | 13 | 15 | 16 | 18 | 21 | 27 | |||
| min | 7.78 | 9.78 | 12.73 | 14.73 | 15.73 | 17.73 | 20.67 | 26.67 | ||||
| t | max | 0.15 | 0.2 | 0.25 | 0.3 | 0.35 | 0.45 | 0.5 | 0.65 | |||
| min | 0.05 | 0.05 | 0.1 | 0.15 | 0.15 | 0.2 | 0.25 | 0.3 | ||||
About Us
SEVEN REASONS WHY SHOULD YOU CHOOSE HAOSHENG FASTENER
1.Focus on Fasteners
Deeply cultivating the fastener industry for 30 years, serving a total of 10000+ customers
2.Scale and Strength
The factory covers an area of 20000 square meters and has an annual output exceeding 60000 tons
3.Honor and Qualifications
We own ISO9001 ISO14001 and ISO45001 three major System Certifications and are High-tech Enterprise in Hebei Province
4.Internationalization
We have exported to 38 countries and regions and our duty for the EU anti-dumping is 39.6%.
5.Free Sample
We accept free samples for your convenience to inspect if our quality meet your needs.
6.Spot Goods
The inventory of hot selling products reaches up to 2000 tons, meeting the needs of different customers.
7.Source factory
We support customization and have a wide range of fastener products. The price is competitive and there are no intermediaries.
Certificate
Production Process
Customers
FAQ:
Q1: Are you manufacturer or trading company?
A1: We are professional manufacturer with 30 years experience. We accept OEM, ODM as your needs and assure the competitive price and quality for you.
Q2: Can you offer me sample?
A2: Yes, we can offer you sample to test and check quality.
Q3: How does your factory do regarding quality control?
A3: We have professional QC team to inspect each items from the links of production to package.
Q4: How about your delivery time?
A4: Normally it will take 30-35 days after receiving your deposit.
Q5: What is your terms of payment?
A5: T/T 30% as deposit, and 70% balance before delivery.
Q6: What advantages we have?
A6 1.Strict QC: For each order, strict inspection will be carried out by the QC department before shipping. The bad quality will be avoid within door.
2.Shipping: We have shipping department and forwarder, so we can promise faster delivery and make the goods well protected.
3.Our factory professional production metal box drawer system ,hinge，concealed drawer slides ,ball bearing slides , etc furniture fittings.
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