Gangtong Zheli is China manufacturer & supplier who mainly produces M12 Grade 8.8 High Tensile White Zinc Plated Square Head Bolts with many years of experience. Hope to build business relationship with you. Specially designed flange bolts have anti-rotation "teeth" designed to tightly bite or embed into the material that needs to be tightened. These teeth work similarly to the locking rings on soda bottles or milk jugs, but generally require more force to reverse. This unique design makes flange bolts strategically distinct from ordinary bolts. An important companion of flange bolts is flange nuts. Although it has similarities to a regular nut, one side of the flange nut is wider than the other to ensure even pressure distribution. The synergy between flange nuts and flange bolts is very effective and, in some cases, eliminates the need to purchase separate washers, potentially reducing costs. Proper application of torque to the flange bolt-nut combination ensures that the fasteners will not come loose on their own and only an outside force, such as a mechanic, can undo these flange bolts.
Square head bolt differs from the common bolt in that it has a wider surface area under the head to provide for an even distribution of clamping pressure. This wider surface acts like a washer, eliminating the need to combine one with this kind of bolt. Square bolts are available in numerous sizes, strengths, and configurations. Like most other types of fasteners on the market, metric flange bolts are available for any applications that require them.
CLASS | 4.6;4.8 | 5.8 | 6.8 | 8.8 | 9.8 | 10.9 | 12.9 | |||
SIZE | ALL SIZE | ≦M12 | >M12 | ≦M8 | >M8 | ALL SIZE | ||||
COMMON MATERIALS | 1008 ~ 1015 | 1012 ~1017 | 10B21 / 1022 | 10B21 | 10B33 | 10B21 | 10B33 | 10B33 / SCM435/ML20MnTiB | SCM435 | |
ML08AL SWRCH8A~ SWRCH15A | SWRCH15A~ SWRCH18A | SWRCH22A | 35K |
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35ACR | 10B35 |
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AISI 4140 | ||
HEAT TREATMENT(YES/NO) | NO | YES |
The types of flanges one intends to bolt together do not necessarily require a special type of flange bolt, such as standard or metric. Instead, it is typically the physical size of a flange system, or the specific number of boltholes, that will indicate the required bolt size or grade one should use. The bolt grade indicates its strength, so the higher the grade a bolt has, the stronger it is. For example, high-pressure connections, such as in a steam line, may require grade eight bolts for the utmost reliability and safety.
A flange bolt is suitable with most any flange system. The sizes and grades, or strength ratings, can and will change depending on the application at hand. Sizes are available in standard or Society of Automotive Engineering (SAE) measurements, such as 1/4 inch and 1/2 inch, as well as metric measurements, such as 8mm and 10mm. Designed to hold connections tightly, without slippage or loosening, flange bolts are standard in most industrial applications where secure connections are crucial to production.