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Hex Socket Countersunk Flat Head Screws DIN7991 ISO10642 M3 - M16

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Hex Socket Countersunk Flat Head Screws DIN7991 ISO10642 M3 - M16

Country/Region china
City & Province suzhou
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Product Details

DIN7991 ISO10642 M3-M16 Hex Socket Countersunk Flat Head Screws SUS304 Carbon Steel 10B21/10B28/35K Aolly Steel SCM435

Characteristics:

  1. Head Design: These screws feature a hex socket countersunk head, allowing installation and removal using a hex key, providing easier maneuverability.
  2. Material and Hardness: They are often made of high-strength materials like alloy steel, ensuring excellent mechanical properties and durability. Their high hardness rating allows them to withstand significant loads.
  3. Surface Treatment: The screw surfaces usually undergo special treatments, such as blackening, to enhance corrosion resistance and aesthetics.
  4. Standardized Production: These screws typically follow international standards (e.g., DIN, JIS), ensuring quality consistency and interchangeability.
  5. Variety of Sizes: Available in a range of sizes and specifications to suit different applications.

Advantages:

  1. Ease of Operation: The hex socket countersunk head design facilitates easy installation and removal, improving work efficiency.
  2. High Strength: Thanks to high-strength materials and specific heat treatment processes, these screws can withstand considerable tensile and shear forces.
  3. Good Corrosion Resistance: The specially treated surface offers excellent resistance to corrosion, extending the screws' lifespan.
  4. Wide Applicability: Standardized production and a variety of sizes make these screws suitable for various machinery and product structures.

Applications:

  1. Mechanical Engineering: Widely used in machinery to connect and secure various components, ensuring stability and reliability.
  2. Automobile Manufacturing: In the automotive industry, these screws are employed to connect critical parts like the car body and engine.
  3. Electronic Equipment: Used to fasten circuit boards, heatsinks, and other essential components in electronic devices.
  4. Construction Industry: Applied in connecting steel structures, fixing equipment, and other architectural elements.
  5. Aerospace: Due to their high strength and reliability, these screws are extensively used in aerospace, securing crucial parts of aircraft and spacecraft.

Screw Thread
d
M3M4M5M6M8M10M12(M14)M16(M18)M20(M22)M24
PPitch0.50.70.811.251.51.75222.52.52.53
αtol.(+2)90°90°90°90°90°90°90°90°90°90°90°60°60°
bL≤12512141618222630343842465054
125<L ≤ 200///24283236404448525660
L>200/////4549535761656973
dkmax=nominal size681012162024273033363639
min5.77.649.6411.5715.5719.4823.4826.4829.4832.3835.3835.3838.38
dsmax=nominal size345681012141618202224
min2.863.824.825.827.789.7811.7313.7315.7317.7319.6721.6723.67
emin2.32.873.444.585.726.869.1511.4311.4313.7213.721616
kmax1.72.32.83.34.45.56.577.588.513.114
sNominal Size22.534568101012121414
min2.022.523.024.025.026.028.02510.02510.02512.03212.03214.03214.032
max2.12.63.14.125.146.148.17510.17510.17512.21212.21214.21214.212
tmax=nominal size1.21.82.32.53.54.44.64.85.35.55.98.810.3
min0.951.552.052.253.24.14.34.555.25.68.449.87

 

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