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Covertec Steel Substrate Type Scotts Type

カバーテック 鋼材下地用 / Japan Power Fastening Corporation (Official website)

Scotts type for fixing roof covers to steel substrate on metal roofs with drill screws. Stainless steel washer and Neopacking ensure waterproofing.

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

Specifications

Nominal diameter d 6 mm
Pitch P 1.8 mm
Washer Outer Diameter 25 mm
Nominal length range 60～135 mm
Applicable plate thickness (lower limit) 1.6 mm
Applicable plate thickness (upper limit) 4.5 mm
Pull-Out Holding Force (Steel Plate Base) 5.9 kN

カバーテック 鋼材下地用 model comparison

Compare 3 models in the same series by specification.

Model Nominal diameter d Pitch P Applicable plate thickness (lower limit) Applicable plate thickness (upper limit) Nominal length range Washer Outer Diameter
カバーテック鋼材下地用 スコッツタイプ This product 6 mm 1.8 mm 1.6 mm 4.5 mm 60～135 mm 25 mm
カバーテック鋼材下地用 スコッツタイプ本体 6 mm 1.8 mm 1.6 mm 4.5 mm 90～150 mm —
カバーテック鋼材下地用 スチールタイプ 6 mm 1.8 mm 1.6 mm 4.5 mm 60～135 mm 25 mm

How to choose Screws and bolts

Points to check when selecting, with the values for this product (Covertec Steel Substrate Type Scotts Type).

  1. 1. Select a type that suits the substrate

    Drill screws are used for steel substrates, S-cut tip or double-thread screws for wood substrates, and dedicated lift-prevention tip products for existing slate or shingle roofs. Each substrate type has a different structure. Confirm the existing roof construction and substrate material before selecting.

  2. 2. Check the drillable sheet thickness for steel substrates

    This product: Applicable plate thickness (upper limit) 4.5 mm

    Drill screws have an upper limit on drillable steel sheet thickness. Listed products have an upper limit of 3.2 to 4.5 mm and a lower limit of 1.6 mm. Confirm that the thickness of the substrate steel, such as purlins, falls within this range, and also check tip specifications such as pilot length of 12 mm and cutting blade outer diameter of 3.4 mm.

  3. 3. Length suited to the total thickness of stacked materials

    Re-roofing construction passes through the new roofing, existing roofing, insulation and other layers, so confirm the maximum clamping thickness. The maximum clamping thickness of the listed product is 30 mm. Some are available in series lengths such as 90 to 150 mm. Select a length that allows sufficient engagement into the substrate beyond the total thickness.

  4. 4. Check nominal diameter and pitch

    This product: Nominal diameter d 6 mm

    Listed products have a nominal diameter of 4.5 to 6.3 mm and a pitch of 1.8 to 2 mm. A larger diameter gives greater holding power but also affects the hole diameter in the substrate and roofing. Also confirm the manufacturer's specified size and compatibility with the bits and drivers used for installation.

  5. 5. Compare pull-out and shear strengths

    This product: Pull-Out Holding Force (Steel Plate Base) 5.9 kN

    Roofs receive uplift forces from wind suction. Listed products show values of 5.9 kN in steel substrates, 2.5 kN in wood substrates, up to 600 N in structural plywood substrates, and maximum shear of 1200 N. Use the values for each substrate in calculating the required design strength and the number of fasteners.

  6. 6. Washer material and outer diameter for waterproofing

    This product: Washer Outer Diameter 25 mm

    Washers are available in stainless steel with gasket, low-cost steel types, and others, with outer diameters of 25 mm and 20 mm. Select based on roofing profile, the area to be pressed, the risk of rainwater infiltration, and dissimilar metal contact with the roofing material. Some products are supplied as the body only without a washer.

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

About Screws and bolts and all products

Description

Fastens directly into steel substrate by drilling with the drill tip. Two washer outer diameters are available: 25 mm and 20 mm. Neopacking enhances waterproofing during tightening. Lengths can be selected from 6×60 mm to 6×135 mm.

Features

  • Drill screw type for direct fastening to steel substrate
  • Waterproofing with stainless steel washer and Neopacking
  • Two washer outer diameters: 25 mm and 20 mm

Applications

  • Roof cover construction method for metal roofs (steel substrate)

FAQ

Q. What substrates can Covertec Steel Substrate Type Scotts Type be used on?
A. It is a Scotts type that fixes roof covers to steel substrate on metal roofs with drill screws. The drill tip drills directly into the steel substrate for fastening.
Q. What are the washer outer diameter and nominal length options for Covertec Steel Substrate Type Scotts Type?
A. Washer outer diameters are 25 mm and 20 mm. Nominal lengths can be selected from 6×60 mm to 6×135 mm.
Q. How is waterproofing ensured for Covertec Steel Substrate Type Scotts Type?
A. Waterproofing is ensured by the stainless steel washer and Neopacking. Neopacking enhances waterproofing during tightening.
Q. What are the applicable plate thickness and pull-out holding force of Covertec Steel Substrate Type Scotts Type?
A. Applicable plate thickness is 1.6 mm to 4.5 mm. Pull-out holding force (steel plate substrate) is 5.9 kN.

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

Source documents

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