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Imperial Hex Head Bolt Kits (Tapped Flanges)

Imperial Hex Head Bolt Kits (Tapped Flanges)

Imperial Hex Head Bolt Kits (Tapped Flanges)

TFM’s Imperial Hex Head Bolt Kits (Tapped Flanges) are engineered for precision fastening in ultra-high vacuum (UHV), cleanroom, and scientific systems. These kits are specifically designed for tapped flange assemblies, offering a reliable and efficient solution that simplifies installation without compromising vacuum integrity.

Key Features

  • All-in-One Fastening Kit
    Each Imperial Hex Head Bolt Kit (Tapped Flanges) includes corrosion-resistant hex head bolts and matched washers, designed for flanges with tapped holes. The kit eliminates the need for nuts, streamlining the installation process.

  • Imperial Thread Compatibility
    These kits are available in standard imperial thread sizes such as ¼-20, 10-32, and 5/16-24, ensuring perfect compatibility with imperial tapped flanges commonly found in vacuum and ConFlat systems.

  • High-Quality Stainless Steel
    Manufactured from durable 304 or 316 stainless steel, these bolts and washers provide long-term resistance to corrosion, making them ideal for both vacuum and harsh industrial environments.

  • Cleanroom & Vacuum Ready
    TFM offers Imperial Hex Head Bolt Kits (Tapped Flanges) in pre-cleaned and vacuum-sealed packaging to meet the stringent requirements of UHV systems and cleanroom settings.

  • Hex Head Design for Reliable Torque
    The classic hex head design provides excellent grip and torque transfer, ensuring a uniform seal across the flange for leak-free performance.

Applications

  • Tapped ConFlat Flange Assemblies
    Designed specifically for use with tapped flange connections in UHV systems, particle accelerators, and vacuum chambers.

  • Scientific and Laboratory Equipment
    Trusted in labs and research environments where precise and reliable hardware is essential for maintaining vacuum integrity.

  • Semiconductor Fabrication
    Frequently used in deposition, etching, and inspection tools requiring secure, particle-free flange connections.

  • Industrial Vacuum Systems
    Suitable for rugged environments where imperial-threaded flanges are standard and high mechanical strength is needed.

Specifications

  • Thread types: UNC, UNF

  • Available sizes: ¼-20, 10-32, 5/16-24, etc.

  • Multiple lengths for flange thickness variations

  • Includes precision washers

  • Optional: Ultrasonically cleaned and vacuum-sealed for UHV use

Why TFM?

TFM’s Imperial Hex Head Bolt Kits (Tapped Flanges) deliver unmatched performance for engineers, researchers, and technicians working in high-demand vacuum and cleanroom settings. With precision machining, corrosion-resistant materials, and turnkey convenience, these kits are a go-to solution for tapped flange systems.

Ordering Table

Flange OD Diameter Note Part Number
DN16CF (1.33" OD) #8 1 SBK832050S4-25
DN35CF-DN40CF (2.75" OD) 1/4" — HBK25028088
DN50CF (3.375" OD), DN63CF (4.50" OD), DN75CF (4.625" OD), DN100CF (6.00" OD) 5/16" — HBK31224125
DN125CF (6.75" OD) 5/16" — HBK31224150
DN160CF (8.00" OD), DN200CF (10.00" OD) 5/16" — HBK31224175
DN250CF (12.00" OD) 5/16" — HBL31224175
DN275CF (13.25" OD) 3/8" — HBK37524200
DN350CF (16.50" OD) 3/8" — HBL37524200

 

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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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