New-Type Clinching Stud Bolt

Specifications

How to choose Fastening Parts

Points to check when selecting, with the values for this product (New-Type Clinching Stud Bolt).

1. 1. Select a nominal diameter suited to the substrate and load

   The nominal diameter is the outer diameter of the thread. A larger diameter increases pull-out and shear resistance, but it must pass through the hole in the mounted item. Listed examples are 4 mm, 5 mm and 6 mm; determine the size by matching the hole diameter of the bracket and the weight of the suspended equipment.

2. 2. Determine the overall length from item thickness plus required embedment

   The overall length L of listed products is 35 to 80 mm. The remaining length after subtracting the thickness of the mounted item (band or bracket) is the embedment depth into the substrate, so for soft substrates such as ALC panels choose a length that secures sufficient embedment. Also confirm that the screw does not pass through the back of the substrate thickness.

3. 3. Check the thread length engaging the substrate

   The thread length ℓ of listed products is 30 to 55 mm, and this threaded portion provides the holding power. Even with the same overall length, a short threaded section means fewer threads engage the substrate depending on the thickness of the mounted item. Estimate the effective engagement length together with the thickness of the mounted item.

4. 4. Choose the head shape according to the mounting hole and finish

   Flat heads sink into countersunk holes to give a flush surface. Truss heads have a large, low profile and suit holding down brackets or bands with holes that are not countersunk, using their wide bearing surface. Decide based on the hole shape of the mounted item and whether the head may protrude.

5. 5. Verify bearing surface and clearance using head diameter and height

   Head diameter D is in the range of 7 to 12 mm and head height H is 2 to 3.5 mm. If the head diameter is not sufficiently larger than the hole in the mounted item, it cannot hold securely, and head height affects interference with surrounding members or covers. For brackets with slotted holes, confirm that the head diameter reliably exceeds the slot width.

6. 6. Check material and surface treatment for outdoor or humid environments

   Corrosion is a concern for applications outdoors, such as downspout bands. Check the body material (such as stainless steel) and whether anti-corrosion treatment is applied, and watch for galvanic corrosion where the fastener contacts dissimilar metals in the mounting bracket. For structural applications where certified products are specified, as with structural screws, use products that conform to the certified specification.

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

About Fastening Parts and all products

Description

The outer periphery of the lobe-shaped press-fit section is raised into a wall, and the inner side has a gently concave shape. This reduces material movement during pressing, lowering warping and burrs. The position of the sizing ring is set to match the plate thickness of the fastened material. In tests, idle-rotation torque improved by about 27.7% and holding force by about 6.8% compared with the conventional product.

FAQ

Q. What plate thicknesses of thin steel sheets can the new-type clinching stud bolt be used with?

A. It is a product pressed into thin steel sheets. The sizing ring position is set to match the plate thickness of the fastened material. The specific plate thickness range is not stated in the product information.

Q. Can the new-type clinching stud bolt suppress warping and burrs during pressing?

A. By raising the outer periphery of the lobe-shaped press-fit section into a wall and giving the inner side a gently concave shape, material movement during pressing is reduced, which lowers warping and burrs.

Q. How do the idle-rotation torque and holding force of the new-type clinching stud bolt compare with the conventional product?

A. In tests, idle-rotation torque improved by about 27.7% and holding force by about 6.8% compared with the conventional product. The average test idle-rotation torque was 19.52 N·m, and the tested holding force was 3.218 kN.

Q. What kinds of members can the M6×12 mm new-type clinching stud bolt be mounted on?

A. It is used for fastening to structural members using thin steel sheets and for mounting to components such as automotive parts where thinner sheets are used to reduce weight.

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

Source documents

• Document 新型クリンチングスタッドボルトの開発 5 pages Open page 2
  Found on: https://www.nittoseiko.co.jp/products/search/index.php/item?cell003=%E3%81%AD%E3%81%98%E8%A3%BD%E5%93%81%EF%BC%88%E5%B7%A5%E6%A5%AD%E7%94%A8%E3%83%95%E3%82%A1%E3%82%B9%E3%83%8A%E3%83%BC%EF%BC%89&cell004=%E3%82%AF%E3%83%AA%E3%83%B3%E3%83%81%E3%83%B3%E3%82%B0%E3%82%B9%E3%82%BF%E3%83%83%E3%83%89%E3%83%9C%E3%83%AB%E3%83%88&label=1&name=JOISTUD%EF%BC%88%E3%82%B8%E3%83%A7%E3%82%A4%E3%82%B9%E3%82%BF%E3%83%83%E3%83%89%EF%BC%89-S&id=1200