M8 x 8mm T40 Torx Flanged Button Screws (ISO 7380-2) - Black Marine Stainless Steel (A4)

SHBF-M8-8-A4-BL

Key Features

  • Thread Size (T): M8 (8mm)
  • Length (L): 8mm
  • Torx Size: T40
  • Material: Marine Stainless Steel (A4)
  • Finish: Matte Black
View Full Technical Specification.

Available In Other Materials & Finishes


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M8 x 8mm T40 Torx Flanged Button Screws (ISO 7380-2) - Black Marine Stainless Steel (A4) Technical Specification

M8 x 8mm T40 Torx Flanged Button Screws (ISO 7380-2) - Black Marine Stainless Steel (A4) Drawing
FinishMatte Black
Flange Diameter [max] (D)17.8mm
Flange Length (FL)1.5mm
Head Length [max] (H)4.4mm
Length (L)8mm
Manufacturing StandardISO 7380-2
MaterialMarine Stainless Steel (A4)
Material SpecificationMarine Stainless Steel (A4)
Metric or Imperial?Metric
Screw Thread Pitch1.25mm
Thread Size (T)M8 (8mm)
Torx SizeT40

Product Certifications

Certificate of Conformity Included
Certificate of Conformity Included
RoHS Certified
RoHS Certified
REACH Certified
REACH Certified
ISO9001
ISO9001
Quality Approved

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M8 x 8mm T40 Torx Flanged Button Screws (ISO 7380-2) - Black Marine Stainless Steel (A4) Description

The M8 x 8mm T40 Torx Flanged Button Screws (ISO 7380-2) - Black Marine Stainless Steel (A4) has the following features:

  • M8 (8mm) Thread Size (T)
  • ISO 7380-2 Manufacturing Standard
  • 8mm Length (L)
  • T40 Torx Size
  • 1.5mm Flange Length (FL)
  • 4.4mm Head Length [max] (H)
  • Marine Stainless Steel (A4) Material
  • Marine Stainless Steel (A4) Material Specification
  • 1.25mm Screw Thread Pitch
  • Matte Black Finish
  • Metric Metric or Imperial?
  • 17.8mm Flange Diameter [max] (D)

Discover more about the Torx Flanged Button Screws range

Accu’s Torx Flanged Button Screws, also known as Star Flanged Button Screws, are fasteners which feature an aesthetically pleasing rounded head. The use of a Torx drive increases the surface area between driver and inner faces of the hexalobular drive and avoids cam-out. The addition of a flange negates the need for an additional washer and evenly distributes the load applied by the threaded fastener in order to prevent localised stress.

The Torx drive of these fasteners makes them suitable for use with Accu's selection of Torx Drive Bits which are supplied in drive sizes from T6 to T55. 

Torx Button Machine Screw Variants

Accu also stock a range of Torx Button Screws without a flanged head which feature a smaller head diameter and can be used with our range of Flat Washers. These variants can be bought separately or in bulk in Accu’s pre-packed fastener kits.

Torx Flanged Button Screw Materials

The Star Flanged Button Screws are manufactured in two different stainless steels; A2 Stainless Steel and A4 Marine Grade Stainless Steel. In addition to the natural finish, these screws are also available in Matte Black or with Thread Locking.  

Metric Sizes Available 

The range of Metric Torx Flanged Button Screws are available in thread sizes M2 up to M12, and lengths ranging from 3mm to 120mm. This range is manufactured according to ISO 7380-2 standard.


Shipping Information

Shipping Destinations:Worldwide.
View delivery information.
Weight: 0.01kg.

Component History

Product First Available:Tuesday, October 24, 2017
Stock Last Updated:12:47 pm
Tuesday, November 30, 2021
Specification Last Updated:Monday, November 22, 2021

APC / Barcodes

APC (Accu Product Code):SHBF-M8-8-A4-BL
EAN13 (International Article No.):5057196414246
ASIN (Amazon Stock Identification No.):ASIN not defined.