Mechanical Anchors

Self-Undercutting Anchor

Self-Undercutting Anchor
  • Self-Undercutting Anchor
  • Self-Undercutting Anchor
  • Self-Undercutting Anchor
  • Self-Undercutting Anchor

    • Mechanical Anchors

    Self-Undercutting Anchor

    The self-undercutting anchor is a pre-engineered mechanical anchor system composed of a cutting ring, expansion sleeve, threaded rod, spring washer, flat washer, and nut. Made from chrome-alloy steel, it offers high tensile strength and excellent toughness, making it suitable for heavy-duty structural applications.

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    Technical Data

    Pre-Set Undercut Anchor (Stainless Steel)

    Anchor rod size Material class Effective embedment depth (mm) Tension load (kN) (nominal/design) Shear load (kN) (nominal/design)
    Cracked concrete Non-cracked concrete Cracked concrete Non-cracked concrete
    M6 304 50 4.2*/3.5 4.2*/ 3.5 2.1/1.8 2.1/1.8
    316 9.0*/ 7.5 9.0*/ 7.5 4.5/3.8 4.5/3.8
    M8 304 70 7.7/6.4 7.7/6.4 3.8/3.2 3.8/3.2
    90 7.7/6.4 7.7/6.4 3.8/3.2 3.8/3.2
    316 70 16.5/13.7 16.5/13.7 8.2/6.9 8.2/6.9
    90 16.5/13.7 16.5/13.7 8.2/6.9 8.2/6.9
    M10 304 70 12.2*/ 10.2 12.2*/ 10.2 6.1/5.1 6.1/5.1
    100 12.2/10.2 12.2/10.2 6.1/5.1 6.1/51
    316 70 20.5/11.4 26.1*/ 21.8 13.1/10.9 13.1/10.9
    100 26.1/21.8 261/21.8 13.1/10.9 13.1/10.9
    M12 304




    316    		 70 17.7/14.8 17.7/14.8 8.9/7.4 8.9/7.4
    80

    100    		 17.7*/ 14.8 17.7*/ 14.8 8.9/7.4 8.9/7.4
    17.7*/ 14.8 17.7*/ 14.8 8.9/7.4 8.9/7.4
    120 17.7*/ 14.8 17.7*/ 14.8 8.9/7.4 8.9/7.4
    70 20.5/11.4 28.7/15.9 19.0/15.8 19.0/15.8
    80 25.0/13.9 35.1/19.5 19.0/15.8 19.0/15.8
    100 35.0/19.5 37.9*/ 31.6 19.0/15.8 19.0/15.8
    120 37.9*/ 31.6 37.9*/ 31.6 19.0/15.8 19.0/15.8
    M16 304 100 33.0/27.5 33.0/27.5 16.5/13.7 16.5/13.7
    130 33.0*/ 27.5 33.0*/ 27.5 16.5/13.7 16.5/13.7
    165 33.0*/ 27.5 33.0*/ 27.5 16.5/13.7 16.5/13.7
    316 100 35.0/19.4 49.0/27.2 35.3/29.4 35.3/29.4
    130 51.9/28.8 70.7*/ 58.9 35.3/29.4 35.3/29.4
    165 70.7*/ 58.9 70.7*/ 58.9 35.3/29.4 35.3/29.4
    M20 304 170 50.5*/ 42.9 50.5*/ 42.9 25.7/21.4 25.7/21.4
    210 50.5*/ 42.9 50.5*/ 42.9 25.7/21.4 25.7/21.4
    316 170 77.6/43.1 108.6/60.3 551/45.9 55.1/45.9
    210 106.5/59.2 110.3*/ 90.9 551/45.9 55.1/45.9

    Through-Set Undercut Anchor (Stainless Steel)

    Anchor rod size Material class Effective embedment depth (mm) Tension load (kN) (nominal/design) Shear load (kN) (nominal/design)
    Cracked concrete Non-cracked concrete Cracked concrete Non-cracked concrete
    M6 304 50 4.2*/ 3.5 4.2*/ 3.5 11.0/9.2 11.0/9.2
    316 9.0*/ 7.5 9.0*/ 7.5 23.6/19.7 23.6/19.7
    M8 304 70 7.7/6.4 7.7/6.4 14.7/12.3 14.7/12.3
    90 7.7/6.4 7.7/6.4 14.7/12.3 14.7/12.3
    316 70 16.5/13.7 16.5/13.7 31.6/26.3 31.6/26.3
    90 16.5/13.7 16.5/13.7 31.6/26.3 31.6/26.3
    M10 304 70 12.2*/ 10.2 12.2*/ 10.2 19.0/15.8 19.0/15.8
    100 12.2/10.2 12.2/10.2 16.7/13.9 16.7/13.9
    316 70 20.5/11.4 261*/ 21.8 40.7/33.9 40.7/33.9
    100 26.1/21.8 26.1/21.8 35.8/29.8 35.8/29.8
    M12 304




    316    		 70 17.7/14.8 17.7/14.8 23.7/19.8 23.7/19.8
    80 17.7*/ 14.8 17.7*/ 14.8 23.7/19.8 23.7/19.8
    100 17.7*/ 14.8 17.7*/ 14.8 23.7/19.8 23.7/19.8
    120 17.7*/ 14.8 17.7*/ 14.8 23.7/19.8 23.7/19.8
    70 20.5/11.4 28.7/15.9 50.8/42.3 50.8/42.3
    80 25.0/13.9 35.1/19.5 50.8/42.3 50.8/42.3
    100 35.0/19.5 37.9*/ 31.6 50.8/42.3 50.8/42.3
    120 37.9*/ 31.6 37.9*/ 31.6 50.8/42.3 50.8/42.3
    M16 304 100 33.0/27.5 33.0/27.5 35.3/29.4 35.3/29.4
    130 33.0*/ 27.5 33.0*/ 27.5 35.3/29.4 35.3/29.4
    165 33.0*/ 27.5 33.0*/ 27.5 35.3/29.4 35.3/29.4
    316 100 35.0/19.4 49.0/27.2 75.6/63.0 75.6/63.0
    130 51.9/28.8 70.7*/ 58.9 75.6/63.0 75.6/63.0
    165 70.7*/ 58.9 70.7*/ 58.9 75.6/63.0 75.6/63.0
    M20 304 170 50.5*/ 42.9 50.5*/ 42.9 93.7/78.1 93.7/781
    210 50.5*/ 42.9 50.5*/ 42.9 93.7/78.1 93.7/78.1
    316 170 77.6/43.1 108.6/60.3 200.8/167.3 200.8/167.3
    210 106.5/59.2 110.3*/ 90.9 200.8/167.3 200.8/167.3
    Applications
    • Fixing curtain wall brackets and subframes
      Fixing curtain wall brackets and subframes
    • Load anchoring for steel structures
      Load anchoring for steel structures
    • Anchoring of stair tread plates and joint covers
      Anchoring of stair tread plates and joint covers
    • Installation of crash barriers and noise insulation walls
      Installation of crash barriers and noise insulation walls
    • Fixation of steel plates for bonded steel reinforcement
      Fixation of steel plates for bonded steel reinforcement
    • Anchoring for concrete overlay and structural connection points
      Anchoring for concrete overlay and structural connection points
    • Rail transit anchoring system
      Rail transit anchoring system
    • Bridge and roadway anchoring systems
      Bridge and roadway anchoring systems
    Features
    • No secondary drilling required, efficient and time-saving installation
    • Outstanding durability with excellent weldability and heat resistance
    • Low expansion stress, compatible with various grades of concrete
    • Available in different materials and corrosion protection options based on environmental demands
    • Engineered locking mechanism provides reliable tensile and shear capacity
    • Simple design with strong seismic performance and abrasion resistance
    Test Reports

    Our mechanical anchors are tested to ensure structural reliability and performance under demanding conditions. The following reports confirm compliance with key industry standards:

    • Tensile and Shear Strength Test Report (M10, M16, M20, M24)
    • Seismic Resistance Report
    • Fatigue Resistance Report (2 million cycles)
    • Corrosion Protection Salt Spray Test Report
    • Safety Performance Certification Report
    Talk to an Expert

    Have a question or need a custom quote? Fill out the form and our engineering team will get back to you soon.

    Email: mkt_uk01@163.com
    Structural Strengthening Products