Fuwa bolt 22*22*135

Fuwa Standard Screw 22*22*135

1. Function

• Connection and Fastening: The Fuwa standard screw 22*22*135 is designed to connect and fasten components in automotive or industrial applications, ensuring structural integrity and stability.

• Load-Bearing: It can withstand specific loads and forces, preventing loosening or failure of connected parts during operation.

• Adjustability: Depending on the design, it may allow for some degree of adjustment or fine-tuning in the assembly process.

2. Specifications

• Part Number/Description: Fuwa standard screw 22*22*135

• Thread Size: M22 (22mm diameter)

• Length: 135mm

• Head Type: Typically a hexagonal head for easy tightening with a wrench or socket.

• Drive Type: Hexagonal socket drive (common for high-torque applications).

• Thread Pitch: Standard metric pitch (e.g., 1.5mm, though this may vary; specific pitch should be confirmed with the manufacturer).

3. Material

• Common Materials:

• Carbon Steel: Offers good strength and durability at a lower cost.

• Alloy Steel: Provides higher strength and resistance to wear and fatigue, suitable for high-load applications.

• Stainless Steel: Offers corrosion resistance, making it suitable for use in harsh environments or where exposure to moisture or chemicals is expected.

• Surface Treatment:

• Zinc Plating: Common for carbon steel screws to prevent corrosion.

• Black Oxide: Provides a decorative finish and some corrosion resistance.

• Dacromet or Geomet Coating: Offers superior corrosion resistance for long-term durability.

4. Key Parameters

• Tensile Strength: The maximum tensile load the screw can withstand before breaking (e.g., 10.9 grade screws have a tensile strength of approximately 1040 MPa).

• Yield Strength: The stress at which the screw begins to deform plastically (e.g., 8.8 grade screws have a yield strength of approximately 640 MPa).

• Thread Engagement Length: The depth of thread penetration into the mating material, critical for ensuring a secure connection.

• Torque Specification: The recommended torque for tightening the screw to prevent over-tightening or under-tightening.

• Head Markings: Typically include grade markings (e.g., 8.8, 10.9) to indicate the screw's mechanical properties.

5. English Terminology

• Screw: A fastener with a helical ridge (thread) that is used to hold objects together or to position them.

• Thread Size: The diameter of the screw's thread, often expressed in millimeters (e.g., M22).

• Length: The overall length of the screw from the underhead to the tip.

• Head Type: The shape of the screw head (e.g., hexagonal, pan, round, etc.).

• Drive Type: The type of recess in the screw head for driving (e.g., hexagonal socket, Phillips, slotted, etc.).

• Tensile Strength: The maximum stress a material can withstand while being stretched or pulled before breaking.

• Yield Strength: The stress at which a material begins to deform plastically.

• Thread Pitch: The distance between adjacent threads, measured in millimeters (for metric threads).