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ASTM A193 Stainless Steel 317L Allen Screws

Stainless steel 317L Allen screw is corrosion-resistant fastening hardware made from stainless steel grade 317L. Allen screws, also known as socket head cap screws, are designed with a hexagonal recess in the head that allows for easy tightening or loosening with a hex key or Allen wrench. Stainless Steel 317L is a low-carbon, molybdenum-containing austenitic stainless steel with enhanced resistance to corrosion, making it ideal for use in harsh environments. These screws are commonly used in industrial, chemical, and petrochemical applications where high strength and resistance to corrosion are critical factors. They are also often used in marine applications due to their ability to withstand exposure to seawater and other harsh corrosive environments.

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Stainless Steel 317L Allen Screw is a machine screw used in various applications. This screw type features an Allen head that allows you to drive the screw using an Allen key. The Allen screw is known for its high-torque capabilities and precise fitting, making it ideal for high-precision applications. It's also available in different lengths and diameters to suit different applications.
Stainless steel 317L Allen screw has a wide range of applications. One of these is in the automotive industry, where the screw is used in the engine, transmission, and other parts that require high-precision fastening. The screw is also used in the marine industry, where it's exposed to salty and corrosive environments. Other applications of the Allen screw include construction, electronics, and robotics.

Stainless steel 317L Allen screw is made of high-grade steel highly resistant to corrosion and wear. That makes it suitable for use in harsh environments without the risk of rusting or corroding. Another benefit of this screw type is that it's easy to use. The Allen key ensures that the screw is fixed correctly, preventing any chances of coming off or getting loose. Additionally, it's a cost-effective option in terms of replacements. The screw can last years without significant wear, making it a one-time investment.
Although the stainless steel 317L Allen screw is known for its durable properties, it still requires proper maintenance to last long. One way to maintain the screws is by keeping them clean and free from contaminants. You can use a regular cleaning agent to clean the screws and prevent the build-up of dirt and grime. Additionally, you can lubricate the screws to prevent rusting or corroding.

When using stainless steel 317L Allen screws, observing some safety precautions is essential. In particular, you should use the right screw size and length for your application. Using the wrong screw size or length can cause damage to the material and ineffective fastening. Additionally, you should wear protective gear such as gloves and goggles when handling these screws to prevent accidents.


Using Stainless Steel 317L Allen Screws offers several advantages. They provide excellent corrosion resistance, especially in acidic and chloride-containing environments. These screws offer high strength and good mechanical properties, ensuring secure & reliable fastening.

Stainless Steel 317L Allen Screws are commonly used in industries requiring corrosion resistance & high strength. They find applications in chemical processing, pharmaceuticals, petrochemicals, food processing, and marine environments.

Yes, Stainless Steel 317L Allen Screws are highly suitable for saltwater environments. Stainless Steel 317L has excellent resistance to corrosion in chloride-containing solutions, including seawater. It provides superior protection against pitting and crevice corrosion, making it an ideal choice for marine applications, offshore structures, and other saltwater-exposed equipment.

Specification of Stainless Steel 317L Allen Screw

Spec bag
Spec Allen Screws
Specifications: ASTM A193 / F593, ASME SA193 / SF593
Standard: DIN, ASTM, BS and all International Standards
Length: 3 mm to 200 mm
Allen Screw Size: M3 - M56 | 3/6" to 2" | Custom Sizes
Heat Treatment: Annealing, Stress Relieving, Case Hardening, Quenching and Tempering.

Types of Stainless Steel 317L Allen Screws

Stainless Steel 317L Allen CSK Screws

Stainless Steel 317L Allen CSK Screw

  • - ASTM A193 SS 317L Allen CSK Screw
  • - S31703 Allen CSK Screw
  • - 1.4438 Allen CSK Screw
  • - 317L SS Allen CSK Screws
  • - ASME SA193 SS 317L Allen CSK Screw
  • - SS 317L Allen CSK Screws Supplier
  • - SS 317L Allen CSK Screws Manufacturer
Stainless Steel 317L Low Head Allen Screws

Stainless Steel 317L Low Head Allen Screw

  • - ASTM A193 SS 317L Low Head Allen Screw
  • - S31703 Low Head Allen Screw
  • - 1.4438 Low Head Allen Screw
  • - 317L SS Low Head Allen Screws
  • - ASME SA193 SS 317L Low Head Allen Screw
  • - SS 317L Low Head Allen Screws Supplier
  • - SS 317L Low Head Allen Screws Manufacturer
Stainless Steel 317L Allen Grub Screws

Stainless Steel 317L Allen Grub Screw

  • - ASTM A193 SS 317L Allen Grub Screw
  • - S31703 Allen Grub Screw
  • - 1.4438 Allen Grub Screw
  • - 317L SS Allen Grub Screws
  • - ASME SA193 SS 317L Allen Grub Screw
  • - SS 317L Allen Grub Screws Supplier
  • - SS 317L Allen Grub Screws Manufacturer
Stainless Steel 317L Button Head Allen Cap Screws

SS 317L Button Head Allen Cap Screws

  • - 317L SS Button Head Allen Cap Screws
  • - S31703 Button Head Allen Cap Screws
  • - 1.4438 Button Head Allen Cap Screws
  • - 317L SS Button Head Allen Cap Screws
  • - SS 317L Button Head Allen Cap Screws
  • - SS 317L Button Head Allen Cap Screws
  • - SS 317L Button Head Allen Cap Screws

Equivalent Grades for Stainless Steel 317L Allen Screw

STANDARD WERKSTOFF NR. UNS JIS EN
SS 317L 1.4438 S31703 SUS 317L X2CrNiMo18-15-4

Stainless Steel 317L Allen Screw Chemical Composition

Grade C Mn Si P S Cr Mo Ni Fe
SS 317L 0.035 max 2.0 max 1.0 max 0.045 max 0.030 max 18.00 - 20.00 3.00 - 4.00 11.00 - 15.00 57.89 min

Mechanical Properties of Stainless Steel 317L Allen Screws

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
7.9 g/cm3 1400 °C (2550 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %

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Application Industries

  • Refineries
  • Petrochemicals Industry
  • Oil & Gas Industry
  • Mining
  • Construction
  • Pharmaceuticals
  • Automobile