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J C Gupta & Sons

J C Gupta & Sons

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Wood Screws

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Wood screws are used to fasten wood to wood or attach objects to wood and offer an aesthetically appealing finish. The purpose of wood screws is to pull wood pieces together as they are tightened making clamping superfluous. These can be removed far more easily than nails enabling the user to dismantle the assembled furniture or fixtures with relative speed and least damage.

These come in a large range:

Countersunk Slotted Head

Blunt thread angle of 60° (displaces material, risk of splitting)

Thicker minor diameter

Deforms the wood, so predrilling is recommended

The slotted screw is commonly found in existing products and installations, along with use in simple carpentry work and in applications where minimal torque is needed. Slotted screws are also used in the restoration of antique furniture, vehicles, and equipment.

 

 

Specification: DIN-97, IS-6760

 


COACH SCREW/ LAG BOLT

These are heavy duty screws designed with a square or hexagonal head engineered to be used with a wrench, spanner, or pliers.

When driven into timber, the threaded shaft bites into the wood.

 

 

 

Specifications:  DIN 571, IS-549

Materials: Mild Steel and Stainless Steel
Size Range:
Dia: 5mm to 12mm
Length: 20mm to 150mm
Typical Uses:
for metal to timber connections, or to join heavy timbers.

Fixing clamps, plates to flooring, walls, Dish Antennas, road humps etc

 

Mirror Screws

Mirror Screws are an elegant way to fix mirrors and displays.

 

 

 

 

 

 

 

These are specially designed screws that come in two parts. The screw part is the same as any other screw except that it has a tiny threaded hole drilled in the screw head, into which you screw the second part of the design – a small dome shaped cap.

 

 

 

 

 

 


Chipboard Wood Screws

Chipboard screws, also called speed screws, are developed to prevent the problems arising with the application of the conventional wood screws in chipboard and different type of wood.

Chipboard Screws – TORX

This type of screw can be used in chipboard and soft wood types without pre-drilling, due to its thin core diameter and sharp angle of the thread. This sharp thread cuts into wood with lower splitting effects, while simultaneously reducing the insertion torque. This combination increases the battery life on the used power tools and has the advantage of saving production time. The pull-out forces are also more consistent from the reduced splitting. These are normally available fully threaded.

Using chipboard screws in harder wood types is usually problematic because the friction and insertion torque is higher, which may result in the screws breaking. To cope with occurring problems, manufacturers have designed extra features on chipboard screws.
The EXPANDET range of screws are examples of these improved designs.

Go to the Expandet Screws page.

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