Stainless steel screws quotes mod#
Stainless steel screws quotes series#

In the sample you can only just make out the threads. The report came back confirming galling and suggesting the A2/A4 mix. I was really concerned at how quickly they had failed so called in a favour where I used to work and had a sample sectioned in the metallurgy laboratory. we knew it had not been on there very long (months) but ended up shearing around half of the fixings (bolt and nyloc nut). Type 202 is a general-purpose stainless steel. Type 201 is hardenable through cold working.

Stainless steel screws quotes series#

Due to their nitrogen addition, they possess approximately 50 higher yield strength than 300 series stainless sheets of steel. SteveSteve this has me a bit worried as I've got A2 stainless screws going into A2 stainless nuts at the moment, should I change the nuts for A4 or something else?I had always known about stainless steel Galling but experienced it in person when we came to remove a customers 'bunch of bananas' exhaust system. 200 series are chromium-manganese-nickel alloys that maximize the use of manganese and nitrogen to minimize the use of nickel. The result of using the same is something called 'Galling' where the two materials actually cold weld together. On the same theme the worst thing you can do is use the same grade stainless for both the nut and bolt.

Stainless steel screws quotes mod#

PATTA Self Drilling Screws comes in both Zinc as well as Ruspert® Coating (Anti-Corrosive).Having worked most of my life in design, engineering and manufacture for MOD contracts it has always been a requirement to use Duralac on all dissimilar metal interfaces.PATTA Self Drilling Screws are engineered for fast drilling and smooth tapping with less effort.PATTA Hex Head Self Drilling Screw comes with EPDM washers which provide excellent heat, cold, weather, Ozone, Oil resistance and very good bending strength, wear resistance, repulsive elasticity and compression strength. PATTA non walking drill point provides fast material engagement.Sufficient pressure has to be applied for more effective drilling making drilling tiring.

A knife like corner is created to scrape the steel off. The conventional drill point only facilitates drilling. This ensures that the drilling process becomes self-digging making drill penetration effortless.

PATTA Drill Point has a unique curved edge at the corner of the drill point.

The Unique Point to Thread design extrudes the metal preventing strip-out and maximizes pullout performance and minimizes back-out. PATTA Self Drilling Screws features Drill Point which has precise cutting edges to improve drill performance with less EFFORT. It ensures correct hole size every time, resulting in better thread engagement and tighter clamp.

Power drills, drill bits and elaborate and costly press tools and their maintenance are eliminated.įinally,PATTA Self Drilling Screws can improve product quality.

It only needs one tool for application-screw drive.

Secondly, PATTA Self Drilling Screws can save materials.

It doesn’t require for difficult alignment of two or more elements.

Drilling hole, forming mating thread and clamping home can achieve in an easy operation. Firstly, PATTA Self Drilling Screws can save labor.Self-drilling screws mainly has three advantages as following : We are one of the Largest Stockists & Distributors of PATTA Self Drilling Screws in Secunderabad (A.P).