No.8 (4.2mm) x 1 inch (25.5mm) T20 Torx Self Tapping Countersunk Screws (ISO 14586) - Stainless Steel (A2)


Key Features

  • 3 Year Extended Warranty.
  • Free Technical Support From Our Engineers.
  • Custom Dimensions Available Through Our Custom Manufacture Service.
  • Thread Size (T): No.8 (4.2mm)
  • Nominal Length: 1 inch (25.5mm)
View Full Technical Specification.

Available In Other Materials & Finishes

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No.8 (4.2mm) x 1 inch (25.5mm) T20 Torx Self Tapping Countersunk Screws (ISO 14586) - Stainless Steel (A2) Technical Specification

No.8 (4.2mm) x 1 inch (25.5mm) T20 Torx Self Tapping Countersunk Screws (ISO 14586) - Stainless Steel (A2) Drawing
Countersunk Angle90 degrees
For Use WithWood, Plastic & Non-Ferrous Metal (Requires Pilot Hole)
Head Diameter (D)8.4mm
Head Length (H)2.6mm
Manufacturing StandardISO 14586
MaterialStainless Steel (A2)
Material SpecificationStainless Steel (A2)
Metric or Imperial?Metric
Metric Thread Size (E)4.2mm
Nominal Length1 inch (25.5mm)
Thread Size (T)No.8 (4.2mm)
Torx Size (P)T20

Product Certifications

Certificate of Conformity Included
Certificate of Conformity Included
RoHS Certified
RoHS Certified
REACH Certified
REACH Certified
Quality Approved

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No.8 (4.2mm) x 1 inch (25.5mm) T20 Torx Self Tapping Countersunk Screws (ISO 14586) - Stainless Steel (A2) Description

The No.8 (4.2mm) x 1 inch (25.5mm) T20 Torx Self Tapping Countersunk Screws (ISO 14586) - Stainless Steel (A2) has the following features:

  • No.8 (4.2mm) Thread Size (T)
  • 2.6mm Head Length (H)
  • ISO 14586 Manufacturing Standard
  • Stainless Steel (A2) Material
  • Stainless Steel (A2) Material Specification
  • 90 degrees Countersunk Angle
  • 4.2mm Metric Thread Size (E)
  • T20 Torx Size (P)
  • Natural Finish
  • Metric Metric or Imperial?
  • 8.4mm Head Diameter (D)
  • Wood, Plastic & Non-Ferrous Metal (Requires Pilot Hole) For Use With
  • 1 inch (25.5mm) Nominal Length

Discover more about the Torx Self Tapping Countersunk Screws range.

Hexalobular (also known as Torx or 6lobe) Self Tapping Countersunk Screws are designed to tap their own threads when inserted into pre-drilled pilot holes. Products within this range are fitted with a countersunk head, which allows the the screw to sit flush with the target housing. These components also feature a Hexalobular Drive, which is designed to resist cam-out, and is compatible with AccuScrews’ range of Hexalobular Drive Bits.


These components are available in an array of specialist materials, including A2 and A4 Stainless Steel. Additional finishes such as Chemical Blackening can be applied to Stainless Steel components on request.

Imperial Torx Self Tapping Countersunk Screws

These components are manufactured according to DIN 7982C, and are available in thread sizes of between No. 2 and No. 14, and lengths of between ¼ inch and 3 inch. For a full list of conversions, please check our Self Tapping Thread Gauge Conversion Table. Additional sizes can be manufactured in request, please contact our sales team for details.

Shipping Information

Shipping Destinations:Worldwide.
View delivery information.
Weight Band (100 items):Between 0.1kg and 0.25kg. Add to cart to calculate exact weights.

Component History

Product First Available:Friday, October 6, 2017
Stock Last Updated:05:13 pm
Wednesday, January 26, 2022
Specification Last Updated:Wednesday, January 26, 2022

APC / Barcodes

APC (Accu Product Code):SHKT-No.8-1-V2-A2
EAN13 (International Article No.):5057195282044
ASIN (Amazon Stock Identification No.):ASIN not defined.