Hafren KMRN-S A2 Stainless Steel Kinmar ® Removable Nuts - KMRN05-S, KMRN06-S, KMRN08-S, KMRN10-S, KMRN12-S

Product overview

Hafren KMRN-S A2 Stainless Steel Kinmar ® Removable Nuts

Hafren KMRN-S A2 Stainless Steel Kinmar ® Removable Nuts are premium high-security two-way nuts designed for both installation and removal using a matching driver socket. This innovative Hafren KMRN-S design offers outstanding resistance to tampering and attack, combining strength, reusability, and an attractive smooth finish. Ideal for a wide range of applications, these Stainless Steel Nuts deliver long-lasting corrosion resistance and a professional appearance.

  • Also stocked in: Case Hardened Steel Zinc Plated (CR-3) and Geomet ®
  • Kinmar ® Removable drive is also available in bolt form M8 x 25mm / M8 x 40mm
  • Other materials and finishes available to order, subject to minimum order quantities

Part Numbers: KMRN05-S, KMRN06-S, KMRN08-S, KMRN10-S, KMRN12-S.

Hafren KMRN-S A2 – Features

Material: A2 (304cu) Stainless Steel

Heat Treatment: None

Finish: Self Colour

Part Numbers & Driver Sizes

Size Nut Part No Driver Part No
M5 KMRN05-S KM05R
M6 KMRN06-S KM06R
M8 KMRN08-S KM08R
M10 KMRN10-S KM10R
M12 KMRN12-S KM12R

Hafren Security Fasteners

Hafren Fasteners manufacture and supply security & tamper resistant fasteners; special headed screws, nuts & bolts. Their solutions are either permanent, or removable only by using a matching driver tool. They design and supply a wide range of security fasteners including bespoke made to measure security fasteners. If they don’t have what you need they’ll make it just the way you want.

Security: The need to safeguard against theft and vandalism is increasingly an essential part of many design specifications.

Safety: Complying with stringent Health & Safety Law, their fasteners keep the public safe.

Aesthetics: Security fasteners are not only secure and vandal-resistant, but aesthetically pleasing to the eye complementing their surrounding environment


For Additional Information on Hafren KMRN-S A2 Stainless Steel Kinmar ® Removable Nuts, please consult the Technical Data Table or PDF Files below.

*Technical Data subject to change without notice.

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Technical Data

Part Number Size Driver Part Number Width (A) Height (B) Box Quantity
KMRN05-S M5 KM05R 12.1 mm 5.6 mm 100
KMRN06-S M6 KM06R 12.1 mm 5.6 mm 100
KMRN08-S M8 KM08R 16.1 mm 7.3 mm 100
KMRN10-S M10 KM10R 20.1 mm 9.2 mm 100
KMRN12-S M12 KM12R 24.2 mm 10.6 mm 100

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