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304 Stainless Steel Hex Flange Bolts
Product Description
| Product Name | Stainless Steel Flange Bolts |
| Material | Made from 18-8/304/316 stainless steel, these screws have good chemical resistance and may be mildly magnetic. They are also known as A2/A4 stainless steel. |
| Head Type | Hex flange head |
| Length | Is measured from under the head |
| Thread Type | Coarse Thread, Fine Thread. Coarse threads are the industry standard; choose these screws if you don’t know the pitch or threads per inch. Fine and extra-fine threads are closely spaced to prevent loosening from vibration; the finer the thread, the better the resistance. |
| Appliation | The flange distributes pressure where the screw meets the surface, eliminating the need for a separate washer. Head height includes the flange. |
| Standard | Inch screws meet ASTM F593 material quality standards and IFI 111 dimensional standards. Metric screws meet DIN 6921 dimensional standards. |
Application
304 stainless steel hex flange bolts are fasteners with a hexagonal head and an integrated flange (a washer-like structure) under the head. The use of 304 stainless steel in these bolts provides them with excellent corrosion resistance, making them suitable for various applications, particularly in environments where exposure to moisture and corrosive elements is a concern. Here are some common applications for 304 stainless steel hex flange bolts:
Construction and Building Industry:
Used in structural components where corrosion resistance is crucial, such as outdoor construction or coastal areas.
Fastening steel frames, supports, and other components in building structures.
Marine Applications:
Ideal for marine environments due to their resistance to saltwater corrosion.
Used in boat building, docks, and other marine structures.
Automotive Industry:
Fastening components in vehicles, especially in areas exposed to the elements or road salt.
Applications in exhaust systems, engine components, and chassis assembly.
Chemical Processing Plants:
Bolts used in equipment and structures within chemical plants where resistance to corrosive chemicals is vital.
Food and Beverage Industry:
Used in equipment and machinery in the food processing industry where sanitation and corrosion resistance are critical.
Water Treatment Facilities:
Fasteners used in water treatment plants for the construction and maintenance of equipment and infrastructure.
Outdoor and Recreational Equipment:
Used in the assembly of outdoor furniture, playground equipment, and recreational structures due to their corrosion resistance.
Agricultural Equipment:
Bolts employed in the construction of farm machinery and equipment that may be exposed to harsh outdoor conditions.
Oil and Gas Industry:
Applications in oil rigs, pipelines, and other equipment where corrosion resistance is essential, especially in offshore environments.
Renewable Energy Projects:
Used in the construction of solar panel structures, wind turbines, and other renewable energy infrastructure.
Railway Industry:
Fasteners used in railway tracks and structures, where resistance to weather and environmental conditions is crucial.
Medical Equipment:
Used in the construction of medical devices and equipment that require corrosion resistance and durability.
DIN 6921
| 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 | ||
