"Easy starting screw, self countersinking, with added rust resistance for outside use. Not cheap but worth it for longevity. Long screws will need a pilot hole and stainless are more easily sheared than standard screws. Larger diameter option than available for the very long screws would help."
"I purchased 2 boxes of 50 screws from different batches, and found them to be perfect for securing 100mm joists. The pilot holes were drilled all the way through the 100mm joist, using a number 6 drill. This left 50mm of screw to fix to the supporting beams. No screws buckled or snapped, and I applied large amounts of touque using a power driver, and manual screwing."
"What you see is what you get. Great value screws compared with 4 other suppliers and no complaints from my chippies when using them to install 60mm insulation battened to the underside of a roof panel. 25mm batten plus 60mm insulation meant we needed a long screw to ensure secure fastening to the steep roof pitch. Size was recommended by the insulation and roof panel manufacturer, Kingspan."
"These are good, well made screws. I think the extra spent on stainless for this kind of thing is always money well spent-you may want to take them out again! I have not found better value for money, and would recommend"
"I chose these as they were for external use so needed to be corrosion resistant, and I needed something atleast 150mm long- and there were very few makes that offered this combination at a price which wasn't offensive.
I have put 100 of these into a garden wall made from logs, they bind the wood tightly and didn't cause any splits so I am very impessed with them.
However, they are a little bit 'soft'. When your screwing them in they twist up a little (probably due to the stainless material and their length), which to begin with wasn't a problem, but if you have one which is slightly bent or you put too much pressure on it or it goes in at a little bit of an angle these suckers will wind them selves up and just sheer in half. After I had broken or damaged 4 or 5 of these I learnt to spend a little more time lining them up, and dont bother trying with any bent ones- then after I had no problems.
I would definately use these again- I have another wooden wall project coming up and I will definately buy another couple of boxes- but you need to remember to have a bit of patience with them!"
"I can't say that these Stainless Steel screws are rubbish because when they work they are excellent, but I have spent literally hours trying to extract them for whatever reason because the cross slot just so often burrs away when driving them in with a power screwdriver. The metal is phenomenally soft and the cross slots in the smaller screws invariably strip. I really wish Screwfix could supply the same screw but made from a much harder metal . I never get this problem with the Turbogold screws."
"Bought these for a shed build. Using C16 grade 4x2 stud work and a power screwdriver these screws were consistently twisting the shank and occasionally shearing off the head when driven into bare wood. Only way I could use them was to use a regular 6x120mm carbon steel screw to pre-tap the hole.
Unable to reuse extracted screws as too bent!
I think they are just a bit too long for the diameter in A2 stainless (which is less strong than carbon steel). Shorter or thicker is recommended."
"I bought these to use in pressure treated softwood shed bearers. I have been drilling pilot holes and out of approx 12-15 attempts 5 have either sheared or buckled completely. you could actually see the long 6mm screws twisting as I attempted to drive them in. I am taking the 4 boxes of different sizes back for a refund and will use the standard coated turbo ultra screws instead which I have not had any problems with."
"I paid the extra for these because I thought they would be up to the job of going through softwood battens into oak. However I found that they sometimes buckled if I stopped midway and then tried to start again. Also once screwed in completely I was unable to remove them, they would turn but not unscrew. I switched to Turbogold and they were fantastic, put in more than 300 and not one failed, and they were considerably cheaper!"
"Either we had purchased a defective batch or there is a serious design fault in this product. A single box of 50 screws was bought from the Southall branch. After about 12 attempts and failures to use these screws the box was returned and we were refunded. These screws in all cases buckled when pressure was put on them to drive into soft wood. In some cases they snapped. This failure occurred even after pre drilling. In a number of cases the screws were then impossible to retrieve from the wood resulting in wasted timber and much frustration on our project . I would appreciate some feedback from screwfix."