FASTENER By Nord-Lock Group

Fasteners are used for fastening and securing materials such as wood, metal, plastic, or concrete. They include nuts and bolts, threaded rods, structural bolts, machine screws, wedge anchors, washers, rivets, and more in a variety of types and sizes, including metric and inch. Fastener manuals and tech sheets include information such as torque values and fastener dimensions to help you find the right fastener supplies for your job.

The Nord-Lock Group believes that no one should have to question the integrity of the mechanical systems that play such a critical role in our way of life. As a global leader in engineering and bolting technologies, we strengthen public and industrial infrastructures.

Resources :  Expander, Pivot-Pin System


Superbolt tensioners offer you simple and cost-effective tightening of large size bolts. Your joints can be tightened with high accuracy without requiring specialized skills or heavy tooling.

A wide range of tensioners is available in the standard series, as well as an unlimited capacity to create special designs to meet your unique needs.


Superbolt multi-jackbolt tensioners (MJTs) take the high preload requirements in large diameter bolting and break it down into manageable torques using the jackbolts threaded through the nut body.


Superbolt expansion bolts are truly fitted into the hole due to the radial expansion of the conical bore sleeve.

By design, accurate radial force combined with the known axial clamping load, provides total protection against coupling slippage and thus prevents bolt and hole damage during subsequent removals.

The expansion bolts can be retrofitted to replace traditional interference or force fitted bolts, reliably and cost-effectively.

How it works

By pulling a taper body bolt through a taper bore sleeve, the sleeve expands to completely fill the coupling hole, becoming a truly fitted bolt.


  • Truly fitted bolt with radial expansion
  • Safe, reliable and easy installation and removal
  • No coupling slippage
  • No hole damage or re-machining
  • Easy retrofit package
  • Compact, ergonomic tooling
  • Accurate maintenance scheduling


Lug wear is a common problem with all machinery. Repairs involve a costly, time-consuming process with significant downtime and must be repeated several times over a machine’s life.

The Expander System is perfect for repairs ; even if the lugs are badly worn a repair can be made in the field with minimum downtime. If the lugs are worn, the sleeves simply expand to conform to the wear patterns and lock the system in place without the need for time-consuming and ex­pensive welding and line boring – just a re-torque.


Lug wear is a common problem with all machinery. Repairs involve a costly, time-consuming process with significant downtime and must be repeated several times over a machine’s life.

With the Expander System, the repair can be carried out directly in the worn mountings without welding and line boring – a permanent solution to lug wear.


The patented Expander System has been endurance tested for over 50,000 hours without failure and more than 1 million pivot pins have been installed in over 60,000 applications. 

Our production facilities around the world are equipped to enable high-speed manufacturing and delivery of complete pivot assemblies. 

We in­vest in the latest production technol­ogy to ensure maximum capability and quality, and we produce all parts of the Expander System.


We can deliver certificates and test­ing according to your needs. For exam­ple, certificates according to EN10204 or Ultrasonic-, Magnetic particle- and Charpy testing.

  • DNV for the offshore industry
  • TÜV Rheinland

Quality & Environmental Assurance

  • DNV 2:22/ OS E-101
  • API 8C/ISO 13535
  • ISO 9001
  • ISO 14001

Traceability & Control

The Expander Systems are dot pin marked with a lot number to ensure that you know exactly from where the steel originates and when it was made. You also have the opportunity to mark Expander axles with your brand to show your customers that you take pride in the details.

The Expander System is a recipient of the Alfred Nobel Swedish Innovation Development Award


Nord-Lock created the original wedge-locking technology that secures bolted joints, even when exposed to severe vibration and dynamic loads. It is impossible for our products to loosen unintentionally due to the wedge created underneath the bolt head and nut.


Nord-Lock wedge-locking technology secures bolted joints with tension instead of friction. The system is composed of a pair of lock washers with cams on one side and radial teeth on the other.

Nord-Lock wedge-locking products secure the fastener in a joint which cannot be loosened even when subjected to extreme vibration or dynamic loads. The Nord-Lock range includes steel construction washers, wheel nuts, combi bolt washers and custom solutions.


Bolted joints fail for two reasons – spontaneous bolt loosening and slackening. Nord-Lock multifunctional wedge-locking technology tackles both.

The wedge-effect prevents spontaneous bolt loosening, whilst the spring effect compensates for loss of preload due to slackening – offering you total security for those situations when there can be no compromise.