M4 x 20mm T20 Torx Button Head Captive Screws (ISO 7380) - Black Stainless Steel (A2) M4 x 20mm T20 Torx Button Head Captive Screws (ISO 7380) - Black Stainless Steel (A2) (pack of 1)

Accu Product Code (APC): SHBA-M4-20-A2-BL

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M4 x 20mm T20 Torx Button Head Captive Screws (ISO 7380) - Black Stainless Steel (A2) M4 x 20mm T20 Torx Button Head Captive Screws (ISO 7380) - Black Stainless Steel (A2) (pack of 1)

Accu Product Code (APC): SHBA-M4-20-A2-BL

Key Features

Certified Precision - Certificate of Conformity Supplied As Standard.
Manufactured in the UK.
1 Year Extended Warranty.

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Accu Product Code (APC): SHBA-M4-20-A2-BL
Thread Size: M4 (4 mm)
Length (L): 20 mm
Torx Size: T20
Material: Stainless Steel - (A2)
Finish: Matte Black
Captive Diameter (C): 3 mm
Captive Length: 12 mm
Head Diameter (D): 7.6 mm Tolerance: +0/-0.36 mm
Head Length (H): 2.2 mm Tolerance: +0/-0.25 mm
Manufacturing Standard: ISO 7380
Material Family: Stainless Steel
Suitable Captive Washer: M4 (4 mm)
System of Measurement: Metric
Thread Length (E): 8 mm
Thread Pitch: 0.7 mm
Weight per 100 Units: 190 g

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M4 x 20mm T20 Torx Button Head Captive Screws (ISO 7380) - Black Stainless Steel (A2) Description

The M4 x 20mm T20 Torx Button Head Captive Screws (ISO 7380) - Black Stainless Steel (A2) has the following features:

Captive Diameter (C): 3 mm
Captive Length: 12 mm
Matte Black Finish
Head Diameter (D): 7.6 mm
Head Diameter (D) Tolerance: +0/-0.36 mm
Head Length (H): 2.2 mm
Head Length (H) Tolerance: +0/-0.25 mm
Length (L): 20 mm
Manufacturing Standard: ISO 7380
Stainless Steel - (A2)
Stainless Steel Material Family
Suitable Captive Washer: M4 (4 mm)
Suitable Captive Washer Link: /captive-washers/654118-HACW-M4-A2-BL
System of Measurement: Metric
Thread Length (E): 8 mm
Thread Pitch: 0.7 mm
Thread Size: M4 (4 mm)
Torx Size: T20

Discover more about the Torx Button Head Captive Screws range.

Torx Button Head Captive Screws are designed with an unthreaded shank underneath the head. This section is designed to accommodate a specialised Captive Washer, which locks in place during installation to create a self-retaining fastener. The button head of these components makes them aesthetically pleasing, with the added benefit of being free from sharp or pointed edges.

Accu also offers a full range of alternate Captive Screw products. For more information on our Captive Screw range, please visit Accu's What is a Captive Screw? page.

Metric Torx Button Head Captive Screws

Torx Button Head Captive Screws are available in metric thread diameters of between M3 and M8, and in lengths ranging from 16mm up to 60mm.

Custom Manufactured Captive Screws

Accu offers a custom manufacture service for specialist components. If the Captive Screw you require is not listed among our standard components, please contact us, or submit a technical drawing of your required component to MADEbyACCU.

Shipping Information

Shipping Destinations:

Worldwide view delivery information

Weight (100 items):

0.19kg

Component History

Product First Available:

Sunday, June 28, 2015

Stock Last Updated:

11:01 PMWednesday, June 3, 2026

Specification Last Updated:

Wednesday, June 3, 2026

Barcodes

APC (Accu Product Code):

SHBA-M4-20-A2-BL

EAN13 (International Article No.):

5057196647927

ASIN (Amazon Stock Identification No.):

ASIN not defined.

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Thread Size

Length (L)

Torx Size

Material

Finish

Captive Diameter (C)

Captive Length

Head Diameter (D)

Head Length (H)

Manufacturing Standard

Material Family

Suitable Captive Washer

System of Measurement

Thread Length (E)

Thread Pitch

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M4 x 20mm T20 Torx Button Head Captive Screws (ISO 7380) - Black Stainless Steel (A2) M4 x 20mm T20 Torx Button Head Captive Screws (ISO 7380) - Black Stainless Steel (A2) (pack of 1)

M4 x 20mm T20 Torx Button Head Captive Screws (ISO 7380) - Black Stainless Steel (A2) M4 x 20mm T20 Torx Button Head Captive Screws (ISO 7380) - Black Stainless Steel (A2) (pack of 1)

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