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Tapstar M12 x 70

Model TP1270 / STP1270 / タップスター / Japan Power Fastening Corporation (Official website)

A screw-fastening anchor embedded in concrete and secured by tightening with an impact driver. Short to medium length type in M12.

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

Specifications

Overall length L 70 mm
Metric Thread Length 25 mm
Washer Outer Diameter 25 mm
Nut width across flats 19 mm
Anchor screw diameter 12.4 mm
Maximum thickness of workpiece 7 mm
Drill diameter (pilot hole diameter) 11.0 mm
Embedment depth 50 mm
Pull-Out Load 18 kN
Shear load 37 kN

タップスター model comparison

Compare 13 models in the same series by specification.

Model Anchor screw diameter Drill diameter (pilot hole diameter) Overall length L Embedment depth Pull-Out Load Shear load Maximum thickness of workpiece Metric Thread Length
TP1010 / STP1010 10.5 mm 9.5 mm 100 mm 45 mm 15 kN 22 kN 45 mm 25 mm
TP1060 / STP1060 10.5 mm 9.5 mm 60 mm 45 mm 15 kN 22 kN 5 mm 20 mm
TP1080 / STP1080 10.5 mm 9.5 mm 80 mm 45 mm 15 kN 22 kN 25 mm 25 mm
TP1210 / STP1210 12.4 mm 11.0 mm 100 mm 50 mm 18 kN 37 kN 37 mm 30 mm
TP1212 12.4 mm 11.0 mm 120 mm 50 mm 18 kN 37 kN 47 mm 30 mm
TP1260 12.4 mm 11.0 mm 60 mm 40 mm 10 kN 24 kN 7 mm 20 mm
TP1270 / STP1270 This product 12.4 mm 11.0 mm 70 mm 50 mm 18 kN 37 kN 7 mm 25 mm
TP1290 / STP1290 12.4 mm 11.0 mm 90 mm 50 mm 18 kN 37 kN 27 mm 30 mm
TP645 / STP645 6.5 mm 5.5 mm 45 mm 30 mm 6 kN 7 kN 5 mm 15 mm
TP660 / STP660 6.5 mm 5.5 mm 60 mm 30 mm 6 kN 7 kN 20 mm 20 mm
TP8110 8.5 mm 7.5 mm 110 mm 35 mm 9 kN 14 kN 70 mm 25 mm
TP850 / STP850 8.5 mm 7.5 mm 50 mm 35 mm 9 kN 14 kN 5 mm 20 mm
TP870 / STP870 8.5 mm 7.5 mm 70 mm 35 mm 9 kN 14 kN 20 mm 25 mm

How to choose Screw-in anchors

Points to check when selecting, with the values for this product (TP1270 / STP1270).

  1. 1. Select the bolt diameter to suit the attachment

    Determine the nominal diameter of the projecting metric thread (e.g., M6 to M12) according to the hole diameter and bracket specification of the attachment. The nominal diameter also changes the anchor thread diameter, pilot hole diameter, and nut width across flats for the tightening tool, so check these together.

  2. 2. Confirm the required pull-out load is met

    This product: Pull-Out Load 18 kN

    The listed products have pull-out loads of 6 to 18 kN. For hanging or ceiling installations, pull-out is the main load direction, so compare the value with the attachment weight and seismic loads including a safety factor. Also confirm the base strength and conditions under which the stated values were measured.

  3. 3. Check base type and embedment depth

    This product: Embedment depth 50 mm

    Holding capacity depends heavily on the base material and embedment depth (30 to 50 mm for listed products). Some examples show a maximum tensile load of about 1 kN in ALC and about 4 kN in lightweight block columns, which are much lower than in concrete, so always verify the compatible bases and the load values for each base.

  4. 4. Install with the specified pilot hole diameter

    This product: Drill diameter (pilot hole diameter) 11.0 mm

    The pilot hole diameter (5.5 to 11 mm for listed products) determines how far the threads bite into the base. A hole that is too large results in insufficient holding capacity, while one that is too small can prevent screw-in or cause damage. Use the drill diameter specified by the manufacturer, and note that even types without a pilot hole may require one depending on the base.

  5. 5. Choose a length that suits the attachment thickness

    This product: Maximum thickness of workpiece 7 mm

    Overall lengths range from 45 to 120 mm, and different lengths are available for the same nominal diameter. After securing the required embedment depth, select the length so that the attachment thickness (up to 5 to 70 mm) and the projecting thread length needed for the nut and washer are both accommodated.

  6. 6. Check shear load and material

    This product: Shear load 37 kN

    For applications with lateral forces, such as fixing brackets to walls, check the shear load (7 to 37 kN for listed products). For outdoor or humid locations, check whether steel-only or stainless steel versions are available and select a material suited to the corrosive environment.

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

About Screw-in anchors and all products

Description

Provides 18 kN pull-out and 37 kN shear performance at an embedment depth of 50 mm. Maximum fixture thickness is 7 mm. Available in steel and stainless steel, and height adjustment is possible after installation.

Features

  • Can be installed in a short time with an impact driver
  • Ends and finishing materials are less prone to cracking
  • Height adjustment is possible after installation
  • Anchor can be removed

Applications

  • Equipment mounting
  • Building equipment
  • Temporary construction

FAQ

Q. What installation work can Tapstar M12 x 70 (TP1270 / STP1270) be used for?
A. It can be used for equipment mounting, building equipment, and temporary construction. It is a screw-fastening anchor embedded in concrete and secured by tightening with an impact driver.
Q. What are the drill hole diameter (pilot hole diameter) and embedment depth for Tapstar M12 x 70 (TP1270 / STP1270) installation?
A. The drill hole diameter (pilot hole diameter) is 11.0 mm and the embedment depth is 50 mm.
Q. What is the maximum fixture thickness of Tapstar M12 x 70 (TP1270 / STP1270), and is height adjustment possible after installation?
A. The maximum fixture thickness is 7 mm. Height adjustment is possible after installation.
Q. What are the pull-out load and shear load of Tapstar M12 x 70 (TP1270 / STP1270)?
A. The pull-out load is 18 kN and the shear load is 37 kN.
Q. Which materials are available for Tapstar M12 x 70 (TP1270 / STP1270), and is it true that the ends are less prone to cracking?
A. It is available in steel and stainless steel. It has the feature that the ends and finishing materials are less prone to cracking.

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

Source documents

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