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Imperial Hex Head Bolt & Plate Nut Sets (Clearance Flanges)

Imperial Hex Head Bolt & Plate Nut Sets (Clearance Flanges)

Imperial Hex Head Bolt & Plate Nut Sets (Clearance Flanges)

TFM’s Imperial Hex Head Bolt & Plate Nut Sets (Clearance Flanges) are designed for high-performance fastening in vacuum, cleanroom, and industrial systems. These sets provide all the necessary components for securely fastening clearance flange assemblies, offering excellent torque retention, alignment, and durability for demanding applications.

Key Features

  • Complete Fastening Solution
    Each Imperial Hex Head Bolt & Plate Nut Set (Clearance Flanges) includes carefully selected components that allow easy, leak-tight flange assembly. The kit contains imperial-threaded hex head bolts and matching plate nuts designed for clearance hole flanges.

  • Imperial Thread Sizes
    Available in common imperial thread sizes like ¼-20, 10-32, and 5/16-24, these sets are compatible with a wide range of standard imperial-threaded flange designs.

  • Corrosion-Resistant Stainless Steel
    The bolts and plate nuts are made from high-quality stainless steel (304 or 316), offering superior resistance to corrosion and long-lasting performance in harsh environments.

  • Floating Nut Design for Easy Alignment
    The floating plate nut design ensures easy alignment during installation, reducing the chance of cross-threading and making the assembly process more efficient.

  • Ready for Cleanroom and UHV Applications
    TFM offers Imperial Hex Head Bolt & Plate Nut Sets (Clearance Flanges) that are cleanroom-ready, with options for vacuum-sealed packaging to prevent contamination in sensitive environments.

Applications

  • Vacuum Systems
    Ideal for use in UHV and vacuum flange assemblies, including those in research facilities, semiconductor fabrication, and particle accelerators.

  • Semiconductor Manufacturing
    Essential in semiconductor chambers and equipment such as PVD, CVD, and etching systems where reliable, leak-tight flange connections are needed.

  • Laboratory and Research Equipment
    Perfect for laboratory vacuum chambers, experimental setups, and systems requiring repeatable, easy-to-install flange assemblies.

  • Industrial and Aerospace
    Suitable for industrial vacuum systems where high strength and vibration resistance are required, ensuring secure sealing even under extreme conditions.

Specifications

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

  • Materials: Stainless steel 304 or 316

  • Nut Style: Floating plate nut design for easy alignment

  • Packaging Options: Cleaned and vacuum-sealed upon request for cleanroom use

Why Choose TFM?

TFM’s Imperial Hex Head Bolt & Plate Nut Sets (Clearance Flanges) are crafted with precision and designed for demanding applications. Whether you’re building or maintaining high-performance vacuum systems, these sets ensure your flange connections are strong, secure, and leak-tight, every time.

Ordering Table

Flange OD Length Number of Sets Part Number
DN16CF (1.33" OD) 0.75 12 PNB-0133
DN35CF-DN40CF (2.75" OD) 1.25 12 PNB-0275
DN50CF (3.375" OD) 1.75 16 PNB-0337
DN63CF (4.50" OD) 2 16 PNB-0450
DN100CF (6.00" OD) 2.25 16 PNB-0600
DN160CF (8.00" OD) 2.25 20 PNB-0800
DN200CF (10.00" OD) 2.5 24 PNB-1000

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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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