M8 Security Shear Nuts - Bright Zinc Plated Case Hardened Steel


Key Features

  • High Level Security (4)
  • 1 Year Extended Warranty.
  • Free Technical Support From Our Engineers.
  • Custom Dimensions Available Through Our Custom Manufacture Service.
  • Thread Size: M8 (8mm)
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Official Hafren Security Fasteners Product.
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M8 Security Shear Nuts - Bright Zinc Plated Case Hardened Steel Technical Specification

M8 Security Shear Nuts - Bright Zinc Plated Case Hardened Steel Drawing
Breaking Point14-28Nm
FinishBright Zinc Plated
Fixing Type1 Way Permanent Fixing
Manufacturing StandardNot Standardised
MaterialCase Hardened Steel
Material SpecificationCase Hardened Steel
Metric or Imperial?Metric
Nut Width (A/F) (J)17mm
Thread SizeM8 (8mm)
Total Height (M)15.8mm

Product Certifications

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

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M8 Security Shear Nuts - Bright Zinc Plated Case Hardened Steel Description

The M8 Security Shear Nuts - Bright Zinc Plated Case Hardened Steel has the following features:

  • Not Standardised Manufacturing Standard
  • Case Hardened Steel Material
  • Case Hardened Steel Material Specification
  • Bright Zinc Plated Finish
  • Metric Metric or Imperial?
  • M8 (8mm) Thread Size
  • 14-28Nm Breaking Point
  • 15.8mm Total Height (M)
  • 1 Way Permanent Fixing Fixing Type
  • 17mm Nut Width (A/F) (J)

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.


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.


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: 0.00kg.

Component History

Product First Available:Friday, September 3, 2021
Stock Last Updated:11:18 pm
Monday, January 17, 2022
Specification Last Updated:Monday, January 17, 2022

APC / Barcodes

APC (Accu Product Code):HNSH-M8-HS-Z
EAN13 (International Article No.):5054328281684
ASIN (Amazon Stock Identification No.):ASIN not defined.