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Imperial 12-Point Cap Screw & Nut Sets (Clearance Flanges)

Imperial 12-Point Cap Screw & Nut Sets (Clearance Flanges)

Imperial 12-Point Cap Screw & Nut Sets (Clearance Flanges)

TFM’s Imperial 12-Point Cap Screw & Nut Sets (Clearance Flanges) are designed to offer a robust and secure fastening solution for high-performance vacuum, cleanroom, and industrial systems. These precision-engineered sets ensure leak-tight connections and are ideal for demanding environments, offering exceptional torque retention and corrosion resistance. Perfect for use in clearance flange assemblies, these sets provide reliability and durability, essential for the most critical applications.

Key Features

  • 12-Point Cap Screws for Enhanced Torque Control
    The 12-point cap screw design offers superior torque control compared to traditional hex bolts, reducing the risk of slippage during installation. This feature ensures a strong and uniform connection, making these cap screws perfect for use in applications requiring precise torque application.

  • Stainless Steel Construction for Durability
    Crafted from high-quality stainless steel, these 12-point cap screw & nut sets provide excellent resistance to corrosion, ensuring longevity and performance even in harsh environments. Stainless steel also offers the required mechanical strength to maintain the integrity of the assembly under high-pressure conditions.

  • Precise Nut Fitment
    The matching nuts in these sets are engineered to pair seamlessly with the 12-point cap screws, providing secure fitment and helping to avoid cross-threading during installation. The nut design also allows for easy alignment during assembly, making it more efficient and reducing the risk of damage.

  • Imperial Thread Sizes
    These sets are available in commonly used imperial thread sizes, including ¼-20, 10-32, and 5/16-24, ensuring compatibility with a wide range of flange systems.

  • Corrosion-Resistant and Cleanroom-Ready
    The Imperial 12-Point Cap Screw & Nut Sets (Clearance Flanges) are suitable for cleanroom and UHV environments. Each set is packaged in vacuum-sealed bags to prevent contamination, making them ideal for semiconductor manufacturing, laboratory work, and sensitive industrial applications.

Applications

  • Vacuum and UHV Systems
    These sets are perfect for use in vacuum systems where a secure, leak-tight connection is critical. The corrosion resistance and secure fitment make them a reliable choice for UHV chambers and other vacuum equipment.

  • Semiconductor Manufacturing
    Essential for semiconductor processing environments such as PVD and CVD systems, the 12-point cap screw & nut sets ensure reliable connections in critical applications where both mechanical strength and cleanliness are paramount.

  • Laboratory and Research Equipment
    Ideal for experimental setups, laboratory vacuum chambers, and other high-precision systems, these cap screw & nut sets offer the reliability and performance needed in scientific research environments.

  • Aerospace and Industrial Systems
    These sets are also suitable for aerospace and industrial systems where high torque retention and resistance to vibration are required for maintaining system integrity.

Specifications

  • Thread Sizes: UNC (¼-20, 10-32, 5/16-24)

  • Material: Stainless steel

  • Head Style: 12-point cap screw

  • Nut Style: Matching nuts designed for 12-point cap screws

  • Packaging: Vacuum-sealed for cleanroom compatibility

  • Plating: Unplated stainless steel (optional plating available)

Why Choose TFM?

TFM’s Imperial 12-Point Cap Screw & Nut Sets (Clearance Flanges) are engineered for maximum performance, providing secure, leak-tight, and durable connections in high-demand environments. With exceptional torque retention, corrosion resistance, and cleanroom-ready packaging, these sets are the ideal solution for applications in vacuum systems, semiconductor manufacturing, and industrial setups.

Ordering Table

Flange OD Diameter Thread TPI Length Note Part Number
DN25CF (2.125" OD), DN35CF-DN40CF (2.75" OD) 0.25 28 1.25 — TBS25028125
DN35CF-DN40CF (2.75" OD) 0.25 28 2.13 — TBS25028212
DN50CF (3.375" OD) 0.3125 24 1.75 — TBS31224175
DN63CF (4.50" OD) 0.3125 24 2 — TBS31224200
DN100CF (6.00" OD) 0.3125 24 2.25 1 TBS31224225
DN200CF (10.00" OD) 0.3125 24 2.5 — TBS31224250
DN25CF (2.125" OD), DN35CF-DN40CF (2.75" OD) 0.25 28 1.25 — TBS25028125P
DN35CF-DN40CF (2.75" OD) 0.25 28 2.13 — TBS25028212P
DN50CF (3.375" OD) 0.3125 24 1.75 — TBS31224175P
DN63CF (4.50" OD) 0.3125 24 2 — TBS31224200P
DN100CF (6.00" OD) 0.3125 24 2.25 — TBS31224225P
DN200CF (10.00" OD) 0.3125 24 2.5 — TBS31224250P

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FAQ

Tube fittings are designed for tubes (measured by outside diameter and wall thickness) used in high-pressure and instrumentation applications, whereas pipe fittings are for pipes (identified by nominal pipe size) primarily used in fluid transport.

 

Common valve types include ball valves, gate valves, check valves, butterfly valves, and globe valves. Each serves a specific function—from quick shutoff (ball/gate valves) to flow regulation (globe valves).

 

  • For tubing, measure the outside diameter; for pipes, refer to the nominal pipe size (using conversion charts if needed). Always match the valve or fitting size to your pipe’s dimensions and flow requirements.

  • Frequently used thread types include NPT (National Pipe Tapered), BSP (British Standard Pipe), and UNC, along with slip-fit options that rely on compression or fusion rather than threads.

Interchangeability depends on manufacturer specifications and certification. Always verify compatibility via manufacturer guides or certified interchangeability charts.

 

  • A coupling is a short, straight fitting used to join two pipes or tubes. It provides a secure, leak-tight connection and can sometimes serve to extend or repair piping runs.

Consider valve type, pressure and temperature ratings, material compatibility with your fluid, actuation method (manual or automatic), and maintenance requirements.

 

  • Valves regulate flow by opening, closing, or partially obstructing the pathway. Their mechanisms (such as the rotation of a ball or the linear movement of a gate) determine the speed and precision of flow control.

  • A flange is a flat, circular component used to connect pipes, valves, or other equipment. Bolted together with gaskets, flanges provide a secure, leak-proof joint that facilitates both assembly and maintenance.

  • Manual valves require physical operation via handles or levers, whereas actuated valves use mechanisms—pneumatic, electric, or hydraulic—to open and close automatically or remotely.

  • Issues include leaks caused by improper installation, over-tightening, degraded seals, material incompatibility, and fatigue from repeated cycling. Regular inspection and proper installation practices help mitigate these problems.

Regular maintenance involves periodic inspections, cleaning or replacing worn seals, ensuring proper torque during installation, and adhering to manufacturer guidelines and local plumbing codes to preserve system integrity.

 

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