To meet the growing needs of the industry, we have added MicroFast, a special range of micro size screws and nuts to our extensive list of products.
Self-Tapping Screws from 1mm diameter onward.
Many sizes available in ready stock.
Head Styles – PAN Phillips and CSK Phillips
The pan head is a commonly used head style for screws.
It looks like an upside down frying pan – pan head screws have a cylindrical head with a slightly rounded top surface and a flat bearing surface underneath.
Pan head screws are visually appealing and can take higher torque and provide better clamping force.
This head style is ideal for most applications where a protruding head is acceptable.
The Phillips screw drive (specified as an ANSI Type I Cross Recess and type H in ISO documentation) is among the most popular drive style for screws.
Cross recess H (Phillips) according to ISO 4757 has a conventional cruciform recess with all walls inclined, the end of the screwdriver having trapezoid webs.
The design is often criticized for its tendency to cam out at lower torque levels than other “cross head” designs.
Applicable standards
DIN Sizes from M1.6
Micro Sizes now available starting from M1.0
Materials – Steel, Stainless Steel AISI 304 and 316, Titanium on request.
A self-tapping screw is a screw that can tap its own hole as it is driven into the intended material. These are different from traditional screws as they tap their own threads when screwed into either plastic, wood or metal.
A Self-Drilling Screw is a Self-Tapping Screw with the added feature of a drill point. The drill point looks a lot like the point of a drill. It will drill a hole and form the mating threads in one operation.
Pan Head screws are available in different materials for use in a number of applications.
Materials.
Carbon Steel
Stainless Steel AISI-304
Stainless Steel AISI-316
Bi-Metal – SS-304 with Carbon Steel Drill point.
Stainless Steel AISI-410
FINISH/COATING
Zinc Electroplated
Class-3 Coating
Passivated
PAN Phillips
As per DIN-7504M
General purpose head style.
Phillips drive H
Useful for stitching sheets and various assemblies attaching metal and other materials to metal.
Note: When fixing softer materials to metal, consider using a plain washer under the head to prevent the head from digging into the soft material.
The notion of a drive with hexalobular sockets are a decisive step in developing drives better adapted to manual and automated assembly. This drive is becoming increasingly popular throughout the world.
Compared to drives like cross recesses and conventional hexagon sockets, this system is characterized by a lower risk of deterioration and a lower pressure force requirement. The typical «cam out» slipping of the tool has hence been eliminated and the force transmission improved.
The general dimensions are given in the product information of the respective catalogue group.
The Torx compatible drive is a reliable method of fixing screws. This drive can take more torque and does not slip.
The hexalobular socket screw drive, known as Torx or 6-Lobe or star drive, uses a star-shaped recess in the fastener with six rounded points.
It was designed to permit increased torque transfer from the driver to the bit compared to other drive systems. This system features a 15-degree drive angle which provides high torque transfer.
Radial forces are drastically reduced resulting in longer tool life.
It has vertical sidewalls which increases tool engagement CAMOUT is defined as the force upward on a screwdriver as the torsional force is increased to tighten the screw.
Torx Screws do not have camout problems as no camout forces are created to push the driver up and out of the fastener recess.
Due to this, the pressure required to keep the screwdriver in the socket reduces significantly and therefore reduces operator muscular stress and fatigue.
Self-tapping screws are different to traditional screws as they tap their own threads when screwed into either plastic, wood or metal.
The Torx compatible drive is a reliable method of fixing screws. This drive can take more torque and does not slip.
The hexalobular socket screw drive, known as Torx or 6-Lobe or star drive, uses a star-shaped recess in the fastener with six rounded points.
The Phillips screw drive (specified as an ANSI Type I Cross Recess and type H in ISO documentation) is among the most popular drive style for screws.
Cross recess H (Phillips) according to ISO 4757 has a conventional cruciform recess with all walls inclined, the end of the screwdriver having trapezoid webs.
The general dimensions are given in the product information of the respective catalogue group.
The design is often criticized for its tendency to cam out at lower torque levels than other “cross head” designs.
The pan head is cylindrical head with a slightly rounded top surface and a flat bearing surface underneath. This head style is ideal for most applications where a protruding head is acceptable.
Applicable standards
DIN Sizes from M1.6
Micro Sizes now available starting from M1.0
Materials – Steel, Stainless Steel AISI 304 and 316, Titanium on request.
Self-Clinching fasteners provide strong load bearing male or female threads in thin steel and aluminium panels.
Installation is neat and easy.
Simply locate the fastener into a pre-prepared hole and apply a parallel squeezing force to embed the fastener into the panel.
Self-Clinching fasteners work by utilizing a special clinch feature.
When the part is pressed into the hole, the parent material cold-flows into the clinch feature, effectively locking the fastener into the panel, providing excellent torque-out and push-out performance.
Self-Clinching fasteners require a parallel squeezing force to be applied for correct installation.
Equally important is the length of time the force is applied. Sufficient time must be allowed for the cold-flow clinching process to work (this is often referred to as the dwell time when installing on a hydraulic press).
Pilot Pins are a type of locating pins that resemble threadless studs. These pilot pins have a rounded profile with a tapered tip.
They assist in aligning components before fastening, ensuring accurate installation.
A plain washer is a thin plate, which is most commonly has a disk-shape with a hole in middle. It is widely used to distribute the load of a threaded fastener. Plain washers are used to provide a larger bearing surface where screws, bolts and nuts come in contact with the bearing surfaces.
The main role of flat washers is to increase the size of a screw’s bearing surface area, and reduce the surface pressure applied on the fastened object.
Looseness can result when the bearing surface sinks under the surface pressure, so using a flat washer to reduce the surface pressure is very effective.
This is especially crucial if the contact area between a screw’s bearing surface and the object being fastened is small when fastening to a slot, for instance, or if the object being fastened is made of soft material such as aluminum or resin.
