Taperlok Tooling - For Drilling, Reaming, Countersinking, Tolerancing

THE TAPERLOK STORY
The Taper Lock Fastener System builds structures together and simultaneously adds greatly to their fatigue life. Taper Lock is a complete system of tapered drills, tapered fasteners and tapered gauges.

Taper Lock Fastener holes can be accomplished quickly with a high degree of accuracy, confidence and security. It is essential that the Taper Lock System be accompanied by excellent craftsmanship. Regardless of the higher degree of accuracy, engineering and quality, the ultimate result depends on who builds the product.

The Taper Lock System has its own built-in quality controls. Reasonable care installations will ensure proud finished products. By following this exceptional system, each conscientious craftsman will receive great satisfaction knowing that each Fastener has been installed accurately. The obvious results obtained from excellence is gratification.

The advancement of the interference fit effectively impacts preload. Radial compression, static preload and peripheral tension, effectively reduce stress and proportionately improve fatigue life. The high performance of Taper Lock Fasteners will continually provide structural integrity in existing and future designed vehicles and products. The term Taper Lock is derived from the fact that this tapered fastener is self-locking. When the tapered fastener is inserted into a correctly tapered hole, the interference fit secures the fastener and locks it. This prohibits it from turning, eliminating wrenches, other types of holding and special costly operations.

Taper Lock Fasteners have accurately ground precision shanks inserted with a mating precision tapered hole and a mating Washernut® assembly. A washer and free turning nut make up the assembly that provides automatic washer centering. The “Washer Nut” is extremely strong. The washer is captured to the nut while allowing the nut to turn freely. These features eliminate the loss of washers or handling inventory and installations. Fumbling is eliminated.

Taper Lock’s superiority is its controlled interference fit. Preload is induced at the wall of the hole and progresses through the material, diminishing to zero at some distance from the hole’s edge.

Regular Fasteners must be driven or pressed the full length of the hole when attempting interference fits. This procedure forces the walls outward, tending to promote seizure, galling, plating damage and broaching the hole. The result is non-uniform preloading. This action creates areas of concentrated and near zero stress. Thus the fastener purpose is defeated.

The Taper Lock Fastener fits freely into the greatest portion of the hole and need travel only a short d i s t a nce to become ful l interference , uniformly preloading as the walls expand. This provides longer wear and greater strength. This allows Taper Locks to be removed without damage to the fastener or the hole.

Taper Lock’s superior joint strength occurs through even load distribution and requires fewer fasteners. Closer hole spacing than other conventional fasteners is allowed. Nut height is reduced allowing greater wrenching freedom in inaccessible or tight places.

Two types of Taper Lock Fasteners exist— threaded and non-threaded. All threaded fasteners use the mating Washernut®. Taper Lock Fasteners are available in grip lengths of 1/16 or 1/32 increments.

Selecting the correct Drill, Reamer, Countersink and hole sizes for Flush Head Fasteners or Protruding Head holes requires simple efficient operations. Tapered tooling is provided for every Taper Lock size fastener. The tapered tools are relieved on backout which eliminates chip galling and adds accuracy and smooth hole finishes. The famous Taper Lock Drill Reamer has cutting lips at the end of the tool and reamer flutes on the sides.

Taperlok Cutters

For Freehand Tools and Positive feed equipment - For Hole rework & Production
New & Retrofit Applications