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M8 Security Shear Nuts - Marine Stainless Steel (A4) M8 Security Shear Nuts - Marine Stainless Steel (A4) (pack of 1)

Accu Product Code (APC): HNSH-M8-A4

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M8 Security Shear Nuts - Marine Stainless Steel (A4) M8 Security Shear Nuts - Marine Stainless Steel (A4) (pack of 1)

Accu Product Code (APC): HNSH-M8-A4

Key Features

High Level Security (4)
1 Year Extended Warranty.
Free Technical Support From Our Engineers.

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Simple 90 Day Returns Details.

1 Year Warranty Details.

Official Hafren Security Fasteners Product.

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M8 Security Shear Nuts - Marine Stainless Steel (A4) Description

The M8 Security Shear Nuts - Marine Stainless Steel (A4) has the following features:

Not Standardised Manufacturing Standard
Marine Stainless Steel (A4) Material
316 Marine Grade Stainless Steel (A4) Material Specification
Natural Finish
1.25mm Thread Pitch
Metric Metric or Imperial?
M8 (8mm) Thread Size
13-29Nm Breaking Point
1 Way Permanent Fixing Fixing Type
13mm Socket Size (J)
7mm Cap Height (H)

Discover more about the Shear Nuts range.

Shear Nuts are a type of 1-Way Security Nut specially designed to prevent removal after installation. The hexagonal head of a Shear Nut is designed to snap off (or shear) after installation, leaving a permanent, tamper proof fastening. The installation breaking points for each Shear Nut can be found in the technical specification on the individual product pages.

Accu also lists Shear Bolts in our standard range, which can also be tightened with a spanner or wrench, with the head head of the bolt shearing off to leave a smooth permanent finish.

For an alternative type of tamper proof nut which can be re-tightened if needed and offers a superior high security solution, please see our range of Kinmar® Permanent Nuts.

Materials

Accu’s Shear Nuts are manufactured from a range of materials, including both A2 and A4 Stainless Steel as standard. A chemical matte black finish can also be applied to our Stainless Steel Shear Nuts.

Shear Nuts are also stocked in Mild Steel with either a Galvanised or a Bright Zinc Plated (Cr3) finish.

Sizes

Accu’s range of Shear Nuts are available in metric thread sizes M4 up to M24.

Tamper Proof Components

Accu also offers a full range of tamper proof Security Screws, which can be used alongside Shear Nuts for added security.

Shipping Information

Shipping Destinations:

Worldwide view delivery information

Weight (100 items):

0.591kg

Component History

Product First Available:

Friday, September 3, 2021

Stock Last Updated:

05:36 AMSunday, July 13, 2025

Specification Last Updated:

Sunday, July 13, 2025

Barcodes

APC (Accu Product Code):

HNSH-M8-A4

EAN13 (International Article No.):

5054328281592

ASIN (Amazon Stock Identification No.):

ASIN not defined.

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Product Certifications.

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Socket Size (J)

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Material

Finish

Cap Height (H)

Fixing Type

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Material Specification

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M8 Security Shear Nuts - Marine Stainless Steel (A4) M8 Security Shear Nuts - Marine Stainless Steel (A4) (pack of 1)

M8 Security Shear Nuts - Marine Stainless Steel (A4) M8 Security Shear Nuts - Marine Stainless Steel (A4) (pack of 1)

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