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Turbo Anchor K4

Model K4 / ターボアンカー / Japan Power Fastening Corporation (Official website)

Screw-in anchor that bites firmly into ALC and provides high strength. Compact type with 15.0 mm outer diameter and 50 mm overall length, compatible with M4 bolts, coach screws, and wood screws.

Last verified: (date the content was verified against the source document)

Specifications

Overall length (embedded depth) L 50 mm
Head diameter D 16 mm
Body Diameter d 15.0 mm
Pilot Hole Diameter Da 10.0 mm
Pilot Hole Depth ℓ 60 mm
Installation Bit TBK4
Applicable bolt M4
Applicable wood screw diameter 4～4.5 mm
Screw-in depth 35～50 mm
Approximate Tensile Strength (Bolt) 1.8(180) kN(kgf)
Approximate Tensile Strength (Wood Screw) φ4.1～1.6(160) kN(kgf)

ターボアンカー model comparison

Compare 4 models in the same series by specification.

Model Pilot Hole Diameter Da Overall length (embedded depth) L Applicable bolt Approximate Tensile Strength (Bolt) Applicable wood screw diameter Approximate Tensile Strength (Wood Screw) Body Diameter d Pilot Hole Depth ℓ
K10 14.0 mm 70 mm M8～M10,W3/8 3.5(350) kN(kgf) 9～10 mm φ9.5～3.5(350) kN(kgf) 22.0 mm 80 mm
K4 This product 10.0 mm 50 mm M4 1.8(180) kN(kgf) 4～4.5 mm φ4.1～1.6(160) kN(kgf) 15.0 mm 60 mm
K6 10.0 mm 50 mm M5,M6,W1/4 1.8(180) kN(kgf) 5～6 mm φ5.1～1.6(160) kN(kgf) 15.0 mm 60 mm
K8 12.0 mm 60 mm M8,W5/16 3.0(300) kN(kgf) 7～8 mm φ7.5～2.0(200) kN(kgf) 18.5 mm 70 mm

How to choose Anchors

Points to check when selecting, with the values for this product (K4).

  1. 1. Select a matching bolt for the base material and fixture

    This product: Applicable bolt M4

    ALC anchors have a fixed bolt nominal diameter for each size. The listed products are grouped as M4, M5 to M6, M8, and M8 to M10. Select the type that matches the hole diameter of the bracket being fixed and the nominal diameter of the bolt you use.

  2. 2. Compare required load with the tensile strength guide

    This product: Approximate Tensile Strength (Bolt) 1.8(180) kN(kgf)

    The guide tensile strength for the listed products when used with bolts is 1.8 to 3.5 kN. Select with a margin by including the weight of the fixture as well as loads from earthquakes and vibration. The values shown are guides only, and actual strength varies with the condition of the base material and installation accuracy.

  3. 3. Determine the neck length from fixture thickness plus embedment depth

    The under-head length of the listed screw-in anchors is 35 to 150 mm. Choose a length equal to the thickness of the bracket or rafter being fixed plus the required screw-in depth in the concrete. If the length is insufficient, holding force will be inadequate; if it is too long, the pilot hole becomes deeper and installation takes more effort.

  4. 4. Maintain the correct pilot hole diameter and depth

    This product: Pilot Hole Diameter Da 10.0 mm

    The listed products require a pilot hole diameter of 10 to 14 mm and a pilot hole depth of 60 to 80 mm. If the hole is too large, biting force will be insufficient; if it is too small, the base material may crack or the anchor may not thread in. Use a bit of the specified diameter and drill to the specified depth.

  5. 5. Embedment depth, body diameter, and edge distance in the base material

    This product: Overall length (embedded depth) L 50 mm

    ALC anchors have a total length (embedment depth) of 50 to 70 mm and a body diameter of 15 to 22 mm. Larger sizes generally achieve higher strength, but they also require greater base material thickness and edge distance. Check the thickness of the ALC panel and the distance from the edge at the installation position.

  6. 6. Check the installation bit and recess

    This product: Installation Bit TBK4

    Some types require a dedicated high-speed bit, and some have a drive recess in the head that accepts square bits. Confirm in advance that your impact driver bits fit, so that installation does not stop on site due to incompatible tools.

This guide was written by AI based on the listed products' documents and specification items.

About Anchors and all products

Description

Screw-in type that resists cracking at ALC edges, installed with an impact driver. Installation uses the dedicated high-speed bit "Turbo Booster" (TBK4), enabling fast work from drilling through fastening. Pilot hole diameter 10.0 mm, depth 60 mm. Guideline tensile strength with M4 bolt is 1.8 kN (180 kgf).

Features

  • Bites firmly into ALC and delivers high strength
  • Screw-in type that resists cracking at ALC edges
  • Drilling through fastening possible with one impact driver
  • Dedicated high-speed bit "Turbo Booster" improves installation speed
  • Small drill diameter

Applications

  • Fixing electrical equipment such as distribution boards, lighting fixtures, and monitors
  • Fixing air-conditioning and sanitary equipment
  • Fixing piping
  • Base material fixing for ALC exterior wall renovation

FAQ

Q. Can Turbo Anchor K4 be used in ALC, and what are its features?
A. It is a screw-in anchor that bites firmly into ALC and delivers high strength. Its structure resists cracking at ALC edges.
Q. What tools are required to install Turbo Anchor K4?
A. Drilling through fastening is possible with one impact driver. Using the dedicated high-speed bit "Turbo Booster" (TBK4) improves installation speed.
Q. What are the pilot hole diameter, pilot hole depth, and screw-in depth of Turbo Anchor K4?
A. The pilot hole diameter is 10.0 mm and the pilot hole depth is 60 mm. The screw-in depth is 35 to 50 mm.
Q. What are the dimensions of Turbo Anchor K4, and which bolts and wood screws are compatible?
A. Outer diameter (body diameter) is 15.0 mm, overall length (embedment depth) is 50 mm, and head diameter is 16 mm. Compatible bolt is M4, and compatible wood screw diameter is 4 to 4.5 mm.
Q. What is the guideline tensile strength of Turbo Anchor K4?
A. The guideline tensile strength for M4 bolts is 1.8 kN (180 kgf). For wood screws (φ4.1 to 1.6), the guideline tensile strength is 1.6 kN (160 kgf), not 160 kN (160 kgf).

Written by AI based on the content of the source documents.

Source documents

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