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Tamper-Proof Screws

A tamper-proof screw (with a hex lobe pin, etc.) is a screw used to prevent disassembling equipment or electronic equipment in public facilities for the purpose of mischief or disassembling goods for the purpose of theft. It is widely used in various places such as appliances, chairs and benches in parks, home door knobs, shop signs, station facilities, and other public facilities. Many screw holes have been devised, such as two-holes, tri-wing plates, and NS low heads, and materials such as stainless steel and iron are used.
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  1. TRX tamper-proof truss machine screw (stainless steel) (packed product)
    Osaka Spirit TRX tamper-proof truss machine screw (stainless steel) (packed product)
    Material  Stainless steel  Socket Shape  Tamper proof  Head Shape  Truss 
    Rating:
    94%
    from S$6.49
    Min. 2 days
  2. TRX Countersunk Machine Screw (Stainless Steel) (Packed)
    Osaka Spirit TRX Countersunk Machine Screw (Stainless Steel) (Packed)
    Head Shape  Plate  Material  Stainless steel  Socket Shape  TRX 
    Rating:
    89%
    from S$6.49
    Min. 2 days
  3. 310 Slim 6-Lobe Stainless Steel A2
    SAIMA CORPORATION 310 Slim 6-Lobe Stainless Steel A2
    There is no head protrusion after tightening. Ideal for places where countersunk screws cannot be used due to thin plate fastening.
    Dimension A (°)  About 30  Surface Treatment  Pasipate  Socket Shape  Six Rob  Head Shape  Slim head  Material  Stainless A2 
    Rating:
    96%
    from S$8.69
    Min. 2 days
  4. Hex Lobe Button Bolt (Stainless Steel) (Packed)
    Osaka Spirit Hex Lobe Button Bolt (Stainless Steel) (Packed)
    Socket Shape  Hex robe hole  Material / Finish  Stainless steel  Head Shape  button 
    Rating:
    90%
    from S$6.59
    Min. 2 days
  5. Hex Lobe Button Bolt (SCM435 / Black Oxide Film) (Packed)
    Osaka Spirit Hex Lobe Button Bolt (SCM435 / Black Oxide Film) (Packed)
    Surface Treatment  Black oxide film  Socket Shape  Hex robe hole  Material  SCM435  Head Shape  button 
    Rating:
    95%
    from S$6.49
    Min. 2 days
  6. TRX tamper-proof flat head screw (stainless steel) (packed product)
    Osaka Spirit TRX tamper-proof flat head screw (stainless steel) (packed product)
    Head Shape  Plate  Material  Stainless steel  Socket Shape  Tamper proof 
    Rating:
    96%
    from S$6.49
    Min. 2 days
  7. Pin / Button 6-Rob Bolt (Stainless Steel)
    SAIMA CORPORATION Pin / Button 6-Rob Bolt (Stainless Steel)
    A pin stands in the center of the star shape, and a normal TRX wrench cannot be inserted. Good torque transmission, no come-out, and excellent workability.
    Socket Shape  Pin Button 6-Rob  Material  Stainless A2 
    Rating:
    96%
    from S$9.49
    Min. 2 days
  8. Hex Lobe Countersunk Bolt (Hex Lobe Countersunk Head) New JIS (SCM435 / Black oxide film) (Packed)
    Nissan Screw Hex Lobe Countersunk Bolt (Hex Lobe Countersunk Head) New JIS (SCM435 / Black oxide film) (Packed)
    Surface Treatment  Black oxide film  Socket Shape  Hex robe hole  Head Shape  Plate  Material  SCM435 
    Rating:
    100%
    from S$6.39
    Min. 2 days
  9. Hexlobe socket head bolt (stainless steel)
    Osaka Spirit Hexlobe socket head bolt (stainless steel)
    Socket Shape  Hex robe hole  Material / Finish  Stainless steel 
    Rating:
    92%
    from S$4.89
    Min. 2 days
  10. TRX Tamper-Proof Pan Head Machine Screw (Stainless Steel) (Packed)
    Osaka Spirit TRX Tamper-Proof Pan Head Machine Screw (Stainless Steel) (Packed)
    It is used as a tamper-proof screw because it cannot be removed without using a special tool that is not found in ordinary households.
    Head Shape  Pan head  Material  Stainless steel  Socket Shape  Tamper proof 
    Rating:
    89%
    from S$6.49
    Min. 2 days
  11. Hex Lobe Bolt (SCM435 / Black Oxide Film) (Pack Product)
    Osaka Spirit Hex Lobe Bolt (SCM435 / Black Oxide Film) (Pack Product)
    Surface Treatment  Black oxide film  Socket Shape  Hex robe hole  Material  SCM435 
    Rating:
    80%
    from S$6.49
    Min. 2 days
  12. TRF / Tamper-Proof Screw Pin / Button TRX Machine Screw (Stainless Steel)
    SAIMA CORPORATION TRF / Tamper-Proof Screw Pin / Button TRX Machine Screw (Stainless Steel)
    Socket Shape  Pin button TRX  Head Shape  button 
    Rating:
    94%
    from S$4.59
    Min. 2 days
  13. TRF / Tamper-proof screw Pin Button 6-Rob bolt Stain black
    SAIMA CORPORATION TRF / Tamper-proof screw Pin Button 6-Rob bolt Stain black
    A black version of TRF that cannot be removed with normal tools. Ideal for places where the silver color of stainless steel stands out.
    Socket Shape  Pin button 6-lob  Surface Treatment  Stainless black dyeing  Material  Stainless steel  Head Shape  button 
    Rating:
    20%
    from S$13.99
    Min. 2 days
  14. TRF / Tamper-proof screw-to-hole bit
    SAIMA CORPORATION TRF / Tamper-proof screw-to-hole bit
    Dimension L (mm)  25.4  Hex Width Across (mm)  6.35 
    Rating:
    60%
    from S$28.99
    Min. 2 days
  15. 6-lob ultra low head bolt (SUS304) full thread
    BOSSARD 6-lob ultra low head bolt (SUS304) full thread
    Socket Shape  6 lob  Type of Thread  6 lob ultra low head bolt  Type  Fully threaded  Material  SUS304  Head Shape  Very low head 
    from S$12.99
    Min. 2 days
  16. TRX Slim Head Machine Screw (Stainless Steel) (Pack Product)
    Osaka Spirit TRX Slim Head Machine Screw (Stainless Steel) (Pack Product)
    Head Shape  Slim head  Material  Stainless steel  Socket Shape  TRX 
    Rating:
    74%
    from S$6.49
    Min. 2 days
  17. 310 slim + 6 rob + aluminum / anodized (blue)
    SAIMA CORPORATION 310 slim + 6 rob + aluminum / anodized (blue)
    It is one-third the weight of conventional iron and stainless steel products and is surprisingly lightweight. There is no protrusion of the head after tightening. Ideal for places where countersunk screws cannot be used due to thin plate fastening. Color alumite is applied to the aluminum of the ... Read More
    Socket Shape  6 lob  Material  Aluminum / Anodized  Color  Blue  Head Shape  Slim head 
    Rating:
    100%
    from S$9.49
    Min. 2 days
  18. Ultra-Thin NS Low Head (SCM435 / Trivalent White)
    Nissan Screw Ultra-Thin NS Low Head (SCM435 / Trivalent White)
    Material  SCM435  Surface Treatment  Trivalent white  Head Shape  Ultra-thin low head 
    Rating:
    100%
    from S$4.79
    Min. 3 days
  19. 310 slim + 6 rob + aluminum / anodized (red)
    SAIMA CORPORATION 310 slim + 6 rob + aluminum / anodized (red)
    It is one-third the weight of conventional iron and stainless steel products and is surprisingly lightweight. There is no protrusion of the head after tightening. Ideal for places where countersunk screws cannot be used due to thin plate fastening. Color alumite is applied to the aluminum of the ... Read More
    Socket Shape  6 lob  Material  Aluminum / Anodized  Color  Red  Head Shape  Slim head 
    Rating:
    93%
    from S$9.49
    Min. 2 days
  20. 310 slim + 6 rob + aluminum / anodized (black)
    SAIMA CORPORATION 310 slim + 6 rob + aluminum / anodized (black)
    It is one-third the weight of conventional iron and stainless steel products and is surprisingly lightweight. There is no protrusion of the head after tightening. Ideal for places where countersunk screws cannot be used due to thin plate fastening. Color alumite is applied to the aluminum of the ... Read More
    Socket Shape  6 lob  Material  Aluminum / Anodized  Color  Black  Head Shape  Slim head 
    from S$9.49
    Min. 2 days
  21. TRX pan head machine screw (stainless steel) (packed product)
    Osaka Spirit TRX pan head machine screw (stainless steel) (packed product)
    Head Shape  Pan head  Material  Stainless steel  Socket Shape  TRX 
    Rating:
    80%
    from S$6.49
    Min. 2 days
  22. SRBS Button Bolt with Hexalobular Hole (with Pin)
    NBK (Nabeya Bi-tech Kaisha) SRBS Button Bolt with Hexalobular Hole (with Pin)
    Socket Shape  Hexalobular hole  Material  SUS304 
    from S$7.49
    Min. 2 days
  23. TRF / Tamper-proof screw Pin Sara 6-Rob bolt Stain black dyed
    SAIMA CORPORATION TRF / Tamper-proof screw Pin Sara 6-Rob bolt Stain black dyed
    A black version of TRF that cannot be removed with normal tools. Ideal for places where the silver color of stainless steel stands out.
    Socket Shape  6 lob (with pin)  Head Shape  Plate  Surface Treatment  Stainless black dyeing  Material  Stainless steel 
    Rating:
    80%
    from S$12.99
    Min. 4 days
  24. TRF / Tamper-Proof Screw Tricle A Button Machine Screw (Stainless Steel)
    SAIMA CORPORATION TRF / Tamper-Proof Screw Tricle A Button Machine Screw (Stainless Steel)
    The recess of Tricle TRF is a tamper-proof screw that is made by stacking three spheres and has a high security effect.
    Socket Shape  Tricle A  Head Shape  button 
    Rating:
    60%
    from S$9.49
    Min. 2 days
  25. Button bolt with hex lobe hole (SCM435 / UNIQLO) (pack)
    Osaka Spirit Button bolt with hex lobe hole (SCM435 / UNIQLO) (pack)
    Socket Shape  Hex robe hole  Material  SCM435  Surface Treatment  Unichrome  Head Shape  button 
    Rating:
    100%
    from S$6.49
    Min. 2 days
  26. TRF / Tamper-proof screw Pin / button hexagon socket screw (stainless steel)
    SAIMA CORPORATION TRF / Tamper-proof screw Pin / button hexagon socket screw (stainless steel)
    Socket Shape  Pin / Hexagon socket  Material  Stainless steel  Head Shape  button 
    Rating:
    80%
    from S$4.79
    Min. 2 days
  27. TRF / Tamper-Proof Screw Tri-wing Pan Head Screw (Stainless Steel)
    SAIMA CORPORATION TRF / Tamper-Proof Screw Tri-wing Pan Head Screw (Stainless Steel)
    A Phillips / Minus screwdriver runs idle in the triangle hole.
    Head Shape  Pan head  Socket Shape  Try wing 
    Rating:
    63%
    from S$9.49
    Min. 2 days
  28. 310 Slim 6-Lobe Ni Plated
    SAIMA CORPORATION 310 Slim 6-Lobe Ni Plated
    There is no head protrusion after tightening. Ideal for places where countersunk screws cannot be used due to thin plate fastening.
    Dimension A (°)  About 30  Surface Treatment  Black nickel  Surface Hardness  HV400min  Material  Iron  Head Shape  Slim head 
    Rating:
    90%
    from S$9.49
    Min. 2 days
  29. 5-Robe Pika
    SAIMA CORPORATION 5-Robe Pika
    * 5 A pin stands in the center of the groove and cannot be removed with a normal tool. It can be fastened and released with a special tool.
    RoHS Directive  10 substances  Socket Shape  Pin button 5 lob  Material  Stainless A2 
    Rating:
    80%
    from S$7.99
    Min. 2 days
  30. NS low head + power eight + (equivalent to 8.8)
    Nissan Screw NS low head + power eight + (equivalent to 8.8)
    Achieves strength classification 8.8 equivalent, which greatly exceeds the conventional strength classification 4.8 / 5.8, with an ultra-low head shape. Lightweight is possible with an ultra-thin head shape. Optimal head strength equivalent to 8.8 Shaft strength is 12.9 or more For fastening poin... Read More
    Surface Treatment  Black oxide coating 
    Rating:
    80%
    from S$0.92
    Min. 5 days
  31. TRF / Tamper-proof screw Two-hole pan head machine screw (stainless steel)
    SAIMA CORPORATION TRF / Tamper-proof screw Two-hole pan head machine screw (stainless steel)
    Two holes are the type that is preferred in terms of design and can also be used for decoration.
    Head Shape  Pan head  Socket Shape  Two Hall 
    Rating:
    80%
    from S$9.19
    Min. 2 days
  32. One side pan head machine screw
    SAIMA CORPORATION One side pan head machine screw
    You can use a normal flat-blade screwdriver for tightening. Since there is no recess on the head, dust does not collect and it is suitable for outdoor use.
    Socket Shape  One side  Head Shape  Pan head  Material  Stainless A2 
    from S$8.69
    Min. 4 days
  33. Button bolt with hex lobe hole (SCM435 / 3valent white) (pack)
    Osaka Spirit Button bolt with hex lobe hole (SCM435 / 3valent white) (pack)
    Socket Shape  Hex robe hole  Surface Treatment  Trivalent white  Head Shape  button 
    from S$6.49
    Min. 2 days
  34. TRX round countersunk machine screw (stainless steel) (packed product)
    Osaka Spirit TRX round countersunk machine screw (stainless steel) (packed product)
    Head Shape  Round plate  Material  Stainless steel  Socket Shape  TRX 
    Rating:
    100%
    from S$6.49
    Min. 2 days
  35. TRF / tamper prevention screw 6-lob L-shaped wrench (iron / trivalent white)
    SAIMA CORPORATION TRF / tamper prevention screw 6-lob L-shaped wrench (iron / trivalent white)
    Material  Iron  Surface Treatment  Trivalent white 
    Rating:
    80%
    from S$36.99
    Min. 2 days
  36. Ultra-Thin NS Low Head (SCM435 / Unichrome) (Packed)
    Nissan Screw Ultra-Thin NS Low Head (SCM435 / Unichrome) (Packed)
    Material  SCM435  Head Shape  Ultra-thin low head  Surface Treatment  Unichrome 
    Rating:
    80%
    from S$6.49
    Min. 3 days
  37. 310 slim + 6 lobs + aluminum
    SAIMA CORPORATION 310 slim + 6 lobs + aluminum
    It is 1/3 lighter than iron and stainless steel products. With a thin plate of 1 mm or less, smart fastening without protrusions can be realized in places where countersunk screws cannot be used. M4 with a head height of only 0.9mm. I don't care about the bulge.
    Socket Shape  6 lob  Material  Aluminum  Head Shape  Slim head 
    Rating:
    100%
    from S$9.49
    Min. 2 days
  38. TRF / Tamper-proof screw Hexagon socket L-shaped wrench (Iron / Trivalent white)
    SAIMA CORPORATION TRF / Tamper-proof screw Hexagon socket L-shaped wrench (Iron / Trivalent white)
    Material  Iron  Surface Treatment  Trivalent white  Head Shape  hexagonal 
    from S$36.99
    Min. 2 days
  39. TRX truss machine screw (stainless steel) (packed product)
    Osaka Spirit TRX truss machine screw (stainless steel) (packed product)
    Material  Stainless steel  Socket Shape  TRX  Head Shape  Truss 
    Rating:
    100%
    from S$6.49
    Min. 2 days
  40. TRF / Tamper-proof screw Pin, countersunk TRX machine screw (stainless steel)
    SAIMA CORPORATION TRF / Tamper-proof screw Pin, countersunk TRX machine screw (stainless steel)
    Socket Shape  Pin TRX  Head Shape  Plate  Material  Stainless steel 
    Rating:
    100%
    from S$4.89
    Min. 2 days
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