M12 x 40mm T55 Torx Flanged Button Screws (ISO 7380-2) - Black Stainless Steel (A2)


Key Features

  • M12 Metric Thread Size (12mm)
  • Thread Size (T): M12 (12mm)
  • Length (L): 40mm
  • Torx Size: T55
  • Material: Stainless Steel (A2)
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M12 x 40mm T55 Torx Flanged Button Screws (ISO 7380-2) - Black Stainless Steel (A2) Technical Specification

M12 x 40mm T55 Torx Flanged Button Screws (ISO 7380-2) - Black Stainless Steel (A2) Drawing
FinishMatte Black
Flange Diameter [max] (D)26mm
Flange Length (FL)2.4mm
Head Length [max] (H)6.6mm
Length (L)40mm
Manufacturing StandardISO 7380-2
MaterialStainless Steel (A2)
Material SpecificationStainless Steel (A2)
Metric or Imperial?Metric
Screw Thread Pitch1.75mm
Thread Size (T)M12 (12mm)
Torx SizeT55

Product Certifications

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

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M12 x 40mm T55 Torx Flanged Button Screws (ISO 7380-2) - Black Stainless Steel (A2) Description

The M12 x 40mm T55 Torx Flanged Button Screws (ISO 7380-2) - Black Stainless Steel (A2) has the following features:

  • M12 (12mm) Thread Size (T)
  • ISO 7380-2 Manufacturing Standard
  • 40mm Length (L)
  • T55 Torx Size
  • 2.4mm Flange Length (FL)
  • 6.6mm Head Length [max] (H)
  • Stainless Steel (A2) Material
  • Stainless Steel (A2) Material Specification
  • 1.75mm Screw Thread Pitch
  • Matte Black Finish
  • Metric Metric or Imperial?
  • 26mm 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: 0.04kg.

Component History

Product First Available:Friday, May 13, 2016
Stock Last Updated:02:55 am
Wednesday, December 8, 2021
Specification Last Updated:Wednesday, December 8, 2021

APC / Barcodes

APC (Accu Product Code):SHBF-M12-40-A2-BL
EAN13 (International Article No.):5057196423903
ASIN (Amazon Stock Identification No.):ASIN not defined.