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ISO-F HV Bolt Kits (tapped flanges)

ISO-F HV Bolt Sets (thru-hole)

ISO-F HV Bolt Sets (Thru-Hole): Complete Fastening Kits for Clearance ISO-F High-Vacuum Flanges

ISO-F HV Bolt Sets (Thru-Hole) are comprehensive fastening kits designed specifically for use with clearance (through-hole) ISO-F flanges in high-vacuum (HV) systems. These sets include all the essential components—bolts, washers, and nuts—to ensure secure, repeatable, and leak-tight flange connections, particularly when joining ISO-F flanges to ISO-K counterparts or sealing ISO-F blanking plates and components.

TFM supplies these ISO-F HV Bolt Sets (thru-hole) as a ready-to-use solution tailored for ISO-F flange interfaces that are drilled through (rather than tapped). This configuration is common in larger ISO vacuum flange systems and provides the flexibility to mount components from either side of the flange using standard hex-head bolts and matching hardware.

Key Features of ISO-F HV Bolt Sets (Thru-Hole):

  • Complete Hardware Solution
    Each set includes bolts, washers, and nuts, eliminating the need for separate sourcing and ensuring full compatibility with ISO-F flange thickness and geometry.

  • Designed for Clearance Hole Flanges
    Specifically suited for ISO-F flanges with through-holes, offering the proper bolt length and strength to create a uniform vacuum seal when used with centering rings and o-rings.

  • High-Vacuum Performance
    When used with standard ISO flange seals, these bolt sets help maintain vacuum levels down to 10⁻⁸ Torr, ensuring system integrity in HV environments.

  • Material Options
    Available in zinc-plated steel for general industrial use or stainless steel for corrosion resistance in more demanding chemical or cleanroom environments.

  • Sizes for All ISO Standards
    TFM provides bolt sets for all standard ISO-F sizes, including ISO63, ISO100, ISO160, ISO200, ISO250, ISO320, and ISO400, with bolts appropriately sized for flange thickness and bolt ring clearances.

These bolt sets are ideal for vacuum system installers, maintenance teams, and engineers needing reliable hardware to assemble or repair flange connections without worrying about fitment or material mismatch. Whether you’re sealing a diagnostic port, mounting an ISO-F blank flange, or coupling ISO-F to ISO-K, these ISO-F HV Bolt Sets (Thru-Hole) provide everything needed for a straightforward, effective seal.

For ISO-F flanges with tapped holes, TFM also offers ISO-F Bolt Kits, which include bolts and washers only—designed for thread-in installations.

Typical Applications Include:

  • ISO-F blank flange mounting

  • ISO-K to ISO-F flange transitions

  • HV chamber port sealing

  • Custom vacuum manifold builds

  • Equipment retrofits and repairs

In summary, ISO-F HV Bolt Sets (Thru-Hole) are a dependable, ISO-compliant hardware package for securely fastening through-hole ISO-F flanges in high-vacuum systems. Their completeness, material quality, and standardization ensure reliable performance across research, industrial, and OEM vacuum applications.

Ordering Table

Flange OD Reference Per Package Length Thread Size Part Number
ISO63 Bolt Sets 4 1.6 M8 X 1.25P HBSM8X40-4
ISO80-ISO100 Bolt Sets 8 1.6 M8 X 1.25P HBSM8X40-8
ISO160 Bolt Sets 8 2 M10 X 1.5P HBSM10X50-8
ISO200-ISO250 Bolt Sets 12 2 M10 X 1.5P HBSM10X50-12
ISO320 Bolt Sets 12 2.4 M12 X 1.75P HBSM12X60-12
ISO400-ISO500 Bolt Sets 16 2.4 M12 X 1.75P HBSM12X60-16
ISO630 Bolt Sets 20 3 M12 X 1.75P HBSM12X65-20

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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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