1.  Where can I buy MCF Self-Drilling Screws?

You can contact us directly to procure products or through our authorised dealers (We are in the process of appointing dealers. Please contact us in case you are interested in taking dealership in your area)

Email: microcoldforgesales@gmail.com

WhatsApp: +91 63610 68235

 

2.  Where is MCF Located?

Peenya Industrial Estate, Bangalore

 

3.  What is the MCF mark on the head of a screw?

The headmark represents the name of the manufacturer. This is the organisation that accepts the responsibility that the fastener meets specified requirements. The mark MCF (standing for Micro Coldforge) is the manufacturer’s mark.

 

4.  How to read the part number of a self-drilling screw?

#12

14

X

25

Fastener Gauge

 

Threads per inch

 

Fastener length in mm


5. 
What are the design features of MCF Self Drilling Screw?

a)  MCF fasteners are designed to give maximum holding power.

b)  Drill point designed to drill/tap in structural & mild steel with less effort.

c)  Drill point is designed in a similar fashion as high speed drill bits.

d)  Non walking drill point for quality installation.

 

f)    Threading designed to provide smooth tapping with less effort.

g)  Thread design maximises pull-out performance and minimises backout.

 

6.  Which is the best suited material for self-drilling screws?

AISI / SAE 1022. At MCF we use only SAE 1022 material to manufacture our self drilling screws.

 

7.  What are the various applications of a self-drilling screw?

– Ideal for medium to light duty purpose.

 – Ideal to stitch roof deck.

 – Ideal to stitch wall panel sidelaps.

 – Ideal for use with steel sections and angles.

 – Ideal to use with pipe frame constructions.

 

8.  Which type of Washer is used in MCF Self -drilling screws? What is the benefit?

MCF Self-Drilling screws use EPDM Washer ONLY. EPDM has resistance to UV exposure, ozone, ageing, weathering, and many chemicals. It is great for outdoor applications. EPDM has stability in high and low temperatures’ and therefore can be used in an environment where temperatures range from -300C to 1500C.

 

9.  Is Micro Coldforge ISO Certified?

Yes.  Micro Coldforge is ISO 9001 certified since 2002. Currently we are an ISO 9001:2015 certified organisation. As a manufacturer, we have always taken great care about ourvarious processes and ensured that we conform to quality standards. 

 

10.      What equipment is needed to install a self drilling screw?

a)  Suitable socket

b)  High speed drilling machine

 

11.      What are screws?

Screws are threaded fasteners that hold themselves in materials once installed.

 

12.      What are the ridges on a screw called?

The ridges on a screw are called threading

 

13.      Howare fasteners classified?:

a)    Threaded e.g. nuts, bolts, screws and studs; and

b)   Non threaded e.g. nails, rivets, pins and washers.

 

14.      What is the difference between a self tapping screw and self-drilling screw?

   a)  A Self-Tapping Screw can be referred to as simply a Tapping Screw. Whichever name is used, these names are for screws that form mating threads (“tapping” the threads) in a pre-drilled hole in the substrate into which they are driven.

   b)  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.

 

15.      Why are there so many kinds of screws?

Each type of screw is engineered to work in a specific material or application, in addition there are alternative head, drive, and point styles that may be practical or aesthetic. The number of screw possibilities is exponentially endless.

 

16.      Are screws and bolts the same?

No, screws have a sharp point and hold themselves in the installation material. Bolts require a tapped hole for installation or a nut to hold the bolt to the material. However, “Screw” and “bolt” are terms often swapped interchangeably in the industry.

 

17.      Are screws or nails better?

Neither! Screws and nails are both great for different tasks. One or the other will be better depending on the application.

 

18.      Are screws Recyclable?

Screws can be used repeatedly if the drive recess is undamaged, the threading is undamaged, and a new hole is used.

 

19.      Are screws considered hardware?

Screws are considered fasteners, but fasteners are often called hardware as well. Many would say that fasteners are used with or in hardware.

 

20.      Are screws magnetic?

Some screws are and some are not it depends on the material they are made of.

 

21.      Why are screws plated?

Plating can act as a protective coating and a sacrificial barrier to protect the steel underneath from rusting.

 

22.      Why do screws become loose over time?

Screws have built up pressure when installed, over time this pressure can cause them to loosen along with many other factors including vibration and material expansion or contraction.

 

23.      Why do screws have different heads?

Different heads are often used for aesthetic purposes. Flat heads sit flush, oval heads, pan heads, hex heads, and other heads sit externally.

 

24.      Will screws rust?

Screws will rust depending on the material they are made of and the environment they are in.

 

25.      Can screws go through metal?

Certain screws such as sheet metal screws and self drilling screws can go through metal.

 

26.      Can screws be hammered?

Screws should not be hammered because they need to be rotated for the threads to grip.

 

27.      How to use sheet metal screws/ self drilling screws?

Sheet metal screws have cutting threads that provide excellent hold in thin metals and wood. Drive them into the material until the head is flush with the surface.

 

28.      Why do steel bolts seize while tightening?

During fastener tightening, as pressure builds between the contacting and sliding, thread surfaces, protective oxides are broken, possibly wiped off, and interface metal high points shear or lock together. This cumulative clogging-shearing-locking action causes increasing adhesion. In the extreme, galling leads to seizing – the actual freezing together of the threads. If tightening is continued, the fastener can be twisted off or its threads ripped out.

 

If galling is occurring than because of high friction the torque will not be converted into bolt preload. This may be the cause of the problems that you are experiencing. The change may be due to the surface roughness changing on the threads or other similar minor change.

 

29.      How do you select a fastener size for a particular application?

When selecting a suitable fastener for a particular application there are several factors that must be taken into account. Principally these are:

 

   a)  How many and what size/strength do the fasteners need to be? Other than rely upon past experience of a similar application an analysis must be completed to determine the size/number/strength requirements.

 

   b)  The bolt material to resist the environmental conditions prevailing. This could mean using a standard steel fastener with surface protection or may mean using a material more naturally corrosion resistant such as stainless steel.

 

The general underlying principle is to minimise the cost of the fastener whilst meeting the specification/life requirements of the application. Each situation must be considered on its merit and obviously some detailed work is necessary to arrive at a detailed recommendation

 

30.      What is the difference between a fastener and a fixing?
A fastener joins together two existing elements or parts and a fixing attaches a moveable element to a fixed one. This is only a general rule and there are many exceptions and the terms are often used interchangeably. For example, a wood screw is a fastener but is often used as a fixing.

 

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