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    K071HD Star Knob

    Hygienic Design Stainless Steel Star Knob, Designed to meet EHEDG and 3-A Sanitery principles.

    K071HD Hygienic Star Knobs engineered to withstand high-pressure washdowns without moisture ingress, ensuring your production line meets the strictest microbial safety standards.

    Material:  Stainless Steel A4L-AISI 316L(1.4404)
    Stainless Steel A4-AISI 316(1.4401)
    Stainless Steel A2-AISI 304(1.4301)
    Seal Material: FDA-compliant HNBR (Blue)
    FDA-compliant VMQ (Blue)
    Certification:  3-A
    Surface Finish:  Blank (Ra < 0.8 µm)
    Mirror Polish (Ra < 0.8 µm)

      Technical Drawing & Dimensions

      Technical drawing of hygienic star knob in 316L stainless steel showing dimensions, thread depth, and blue seal geometry.

      Part Number Material SW φD
      (Diameter)
      φD1
      (Base Diameter)
      H
      (Height)
      T
      (Thread Size)
      TL
      (Thread Depth)
      Surface Treatment
      K071-27SL20-A2-PSS AISI304 / 1.4301 24 27 15 20 M5 15 Mirror Polish
      K071-33SL24-A2-PSS AISI304 / 1.4301 30 33 19 24 M6 20 Mirror Polish
      K071-40SL28-A2-PSS AISI304 / 1.4301 36 40 25 28 M8 20 Mirror Polish
      K071-50SL30-A2-PSS AISI304 / 1.4301 46 50 25 30 M10 25 Mirror Polish
      K071-65SL40-A2-PSS AISI304 / 1.4301 60 65 31 40 M12 25 Mirror Polish
      K071-27SL20-A2-BLK AISI304 / 1.4301 24 27 15 20 M5 15 Blank
      K071-33SL24-A2-BLK AISI304 / 1.4301 30 33 19 24 M6 20 Blank
      K071-40SL28-A2-BLK AISI304 / 1.4301 36 40 25 28 M8 20 Blank
      K071-50SL30-A2-BLK AISI304 / 1.4301 46 50 25 30 M10 25 Blank
      K071-65SL40-A2-BLK AISI304 / 1.4301 60 65 31 40 M12 25 Blank
      K071-27SL20-A4-PSS AISI316 / 1.4401 24 27 15 20 M5 15 Mirror Polish
      K071-33SL24-A4-PSS AISI316 / 1.4401 30 33 19 24 M6 20 Mirror Polish
      K071-40SL28-A4-PSS AISI316 / 1.4401 36 40 25 28 M8 20 Mirror Polish
      K071-50SL30-A4-PSS AISI316 / 1.4401 46 50 25 30 M10 25 Mirror Polish
      K071-65SL40-A4-PSS AISI316 / 1.4401 60 65 31 40 M12 25 Mirror Polish
      K071-27SL20-A4-BLK AISI316 / 1.4401 24 27 15 20 M5 15 Blank
      K071-33SL24-A4-BLK AISI316 / 1.4401 30 33 19 24 M6 20 Blank
      K071-40SL28-A4-BLK AISI316 / 1.4401 36 40 25 28 M8 20 Blank
      K071-50SL30-A4-BLK AISI316 / 1.4401 46 50 25 30 M10 25 Blank
      K071-65SL40-A4-BLK AISI316 / 1.4401 60 65 31 40 M12 25 Blank
      K071-27SL20-A4L-PSS AISI316L / 1.4404 24 27 15 20 M5 15 Mirror Polish
      K071-33SL24-A4L-PSS AISI316L / 1.4404 30 33 19 24 M6 20 Mirror Polish
      K071-40SL28-A4L-PSS AISI316L / 1.4404 36 40 25 28 M8 20 Mirror Polish
      K071-50SL30-A4L-PSS AISI316L / 1.4404 46 50 25 30 M10 25 Mirror Polish
      K071-65SL40-A4L-PSS AISI316L / 1.4404 60 65 31 40 M12 25 Mirror Polish
      K071-27SL20-A4L-BLK AISI316L / 1.4404 24 27 15 20 M5 15 Blank
      K071-33SL24-A4L-BLK AISI316L / 1.4404 30 33 19 24 M6 20 Blank
      K071-40SL28-A4L-BLK AISI316L / 1.4404 36 40 25 28 M8 20 Blank
      K071-50SL30-A4L-BLK AISI316L / 1.4404 46 50 25 30 M10 25 Blank
      K071-65SL40-A4L-BLK AISI316L / 1.4404 60 65 31 40 M12 25 Blank

      Engineered for Ultra-Hygienic Environments


      Our Hygienic Star Knob is specifically designed for the food, beverage, and pharmaceutical industries, where hygiene is a critical component of equipment uptime. By eliminating open threads and sharp corners, this knob removes potential "dead zones" where organic matter and bacteria can accumulate.Our Hygienic Star Knob is specifically designed for the food, beverage, and pharmaceutical industries, where hygiene is a critical component of equipment uptime. By eliminating open threads and sharp corners, this knob removes potential "dead zones" where organic matter and bacteria can accumulate.

      Technical Features & Benefits


      Superior Corrosion Resistance: Precision-machined from AISI 316L (1.4404) stainless steel. This high-grade material ensures maximum durability against the aggressive chemicals and salts used in high-pressure washdown procedures.Superior Corrosion Resistance: Precision-machined from AISI 316L (1.4404) stainless steel. This high-grade material ensures maximum durability against the aggressive chemicals and salts used in high-pressure washdown procedures.

       

      Optimized Surface Quality: All functional surfaces are polished to a roughness of $Ra < 0.8 \mu m$. This smooth finish prevents microbial adhesion and simplifies the cleaning process, directly supporting your HACCP and EHEDG compliance goals.Optimized Surface Quality: All functional surfaces are polished to a roughness of $Ra < 0.8 \mu m$. This smooth finish prevents microbial adhesion and simplifies the cleaning process, directly supporting your HACCP and EHEDG compliance goals.

       

      Visible Safety Seal: Features a high-visibility Blue HNBR (or Silicone) sealing ring. The blue color is an industry standard for foreign body detection, ensuring that any seal wear is immediately visible to optical sensors or quality inspectors.Visible Safety Seal: Features a high-visibility Blue HNBR (or Silicone) sealing ring. The blue color is an industry standard for foreign body detection, ensuring that any seal wear is immediately visible to optical sensors or quality inspectors.

       

      Hermetic Sealing: The integrated seal creates a seamless transition between the knob and the mounting surface, preventing moisture or cleaning agents from entering the internal thread or the equipment housing.Hermetic Sealing: The integrated seal creates a seamless transition between the knob and the mounting surface, preventing moisture or cleaning agents from entering the internal thread or the equipment housing.

      • Hygienic 316L stainless steel star knob with blue FDA-compliant HNBR seal for food processing equipment.
      • Underside view of hygienic star knob showing internal blind thread and blue sealing ring to prevent bacteria traps