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DIN251 Hexagon Socket Head with Serrated Flange Screws

Jiaxing Aoke hardware is a Chinese DIN251 hex socket flange screws producer and supplier. Our factory are ISO9001 certified and currently have a large amount of inventory. DIN251 hexagon socket head screws with serrated flange, with their "hexagon socket head + flange face" design, offer irreplaceable advantages in connection scenarios requiring high strength, compact space, and anti-loosening. The DIN251 flange screws feature a cylindrical head with a hexagon socket recess at the top. This hexagonal drive mechanism transmits greater torque (over 30% higher than similar cross-recessed screws) and prevents slippage during installation with an electric screwdriver. The DIN251 hex socket screw's flange is integrally molded, with a larger diameter than the head and featuring anti-slip serrations. This design eliminates the need for additional washers, streamlining the assembly process.

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Product Description

With years of experience in production DIN251 hex socket flange screws, Jiaxing Aoke can manufacture a wide range of flange screws. DIN 251 hexagon socket head screws with serrated flange combine a hexagon socket head with a flange. The hexagon socket reduces the risk of slipping of driving tools (such as hexagonal wrenches or electric screwdriver bits), improving assembly efficiency and safety. The serrated flange surface increases the pressure-bearing area and helps to distribute the load. No additional washers are required; the flange surface of the screw is equivalent to a built-in washer, eliminating the need for a separate washer installation step. AOKE is committed to producing high-quality DIN 251 hexagon socket head flange screws, and the threads are tested by go/no-go gauges with an accuracy of 6g. We can also provide stainless steel DIN 251 hexagon socket head flange screws in A2-70, A4-70, A2-80, and A4-80, which have excellent corrosion resistance and are suitable for humid and corrosive environments.

Product Parameter (Specification)

Standard	DIN251	Material	SS304 (1.4301);SS316(1.4401)
Surface Treatment	Plain, Passivation, black, thread locking, nylon coating	Shank	Full thread/ Half thread
Grade	A2-70 A2-80 A4-70 A4-80	Size	M3-M20
Unite	Piece	Head type	Flange head
Packing	Bulk cartons with pallet, small boxes in cartons with pallet	Lead time	Busy season:20-30days,Slack season:10-20days

Product Application

DIN251 hexagon socket head screws with serrated flange are widely used in heavy Industry, mining, water treatment, healthcare, construction, general industry, Oil & Gas, heavy machinery, aotomobile and motorcycle.