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screw

A screw and a bolt (see Differentiation between bolt and screw below) are similar types of fastener typically made of metal and characterized by a helical ridge, called a male thread (external thread). Screws and bolts are used to fasten materials by the engagement of the screw thread with a similar female thread (internal thread) in the matching part.
Screws are often self-threading (also known as self-tapping) where the thread cuts into the material when the screw is turned, creating an internal thread that helps pull fastened materials together and prevents pull-out. There are many screws for a variety of materials; materials commonly fastened by screws include wood, sheet metal, and plastic.

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  1. G

    Automatic air vent screw

    Just a quick question the black screw on the vent is it suppose to be screwed tight or undone under normal operation
    • Gibbo1471
    • Thread
    • air air vent america automatic screw usa vent
    • Replies: 5
    • Forum: USA
  2. A

    Remove a lever spindle tap (no grub screw)

    Hi, My tap is drippping and I wanted to try and replace the washer myself but am struggling to get the top part off. I have removed the lever handle and everything online says there should be a grub screw inside the hole that I can use an Allen key to open but it seems to be empty. I don't...
    • AnnaGram357
    • Thread
    • america lever remove screw spindle tap usa
    • Replies: 6
    • Forum: USA
  3. spaceboy_psy

    Bath drain plate won't come off... Or screw back down

    Hi all, new here so I hope I'm posting in the right place. I'm having a hell of a time with my bath drain cover. I just wanted to take it off to get a better look at whether the P-Trap was dry. So I unscrewed it. And it won't come off, but neither will it screw back down! Now I just want to...
    • spaceboy_psy
    • Thread
    • america bath drain plate screw usa won't
    • Replies: 9
    • Forum: USA
  4. W

    stuck radiator bleed screw

    There is air at the top of our old radiator( probably fifty years old) in the first floor bedroom. Unfortunately the radiator bleed screw is stuck and does not respond to the small T type radiator key. If I use pliers on the radiator key to apply extra leverage to try loosen the bleed screw...
    • Willam
    • Thread
    • bleed radiator screw stuck
    • Replies: 2
    • Forum: Ireland
  5. A

    Please help with removing screw from bathroom tap

    I am trying to replace the flow cartridge in the bathroom tap. I have turned off the water and removed the tap cover but cannot get the screw to turn. The screw looks to be some variation on a philips screw, i have tried different screw drivers but to no avail I have attached a picture, any...
    • adamc
    • Thread
    • america bathroom help please removing screw tap usa
    • Replies: 4
    • Forum: USA
  6. S

    Mira agile shower temperature adjustment screw not visible

    In the house I have moved into, we have the Mira Agile single control shower. It's control increases water flow as well as temperature in a single control. According to the manual, I should be able to increase the temperature of the shower by removing the concealing cap, then removing the hub...
  7. H

    Bath Drain Screw Will Not Come Out

    Hi, I am trying to remove the drain plug from a bath it has a center screw. It is a long screw, as it gets the top of the ravel it stops. I have tried all sorts WD 40 etc but it will not budge. I am wondering if it is designed this way? The bath is 30 odd years old. Thanks.
    • hbcgar
    • Thread
    • america bath drain screw usa
    • Replies: 4
    • Forum: USA
  8. J

    Change plastic insert for screw in

    Hi, Is it possible to change this plastic insert for a screw in style fitting or would it require a new tap? I would like to be able to just to change the fitting as it is a rental property so cannot/don't want to change the tap. I would like to change for a screw in fitting so I can have one...
    • jrote1
    • Thread
    • america change insert plastic screw tap usa
    • Replies: 1
    • Forum: USA
  9. G

    How do I remove the handle from a Bristan Colonial Thermostatic Shower.

    I have unscrewed the handle and removed the grub screw underneath but can not remove the outer body! The instructions say it should just pull off? TIA
    • GTC
    • Thread
    • america bristan handle remove removed screw shower taken thermostatic underneath usa
    • Replies: 2
    • Forum: USA
  10. E

    Cleaning Gutters with drop down Scrapers

    I have come across 2 drop down scrapers which screw onto drainage rods. One made by Horobin is over £6 and the other by Silverline just over £3. By the pics they look identical. Anyone got experience of either make. I normally clean the gutters on our bungalow 3-4 times a year, important if lots...
    • einhorn
    • Thread
    • america cleaning drainage drop screw usa wide
    • Replies: 2
    • Forum: USA
  11. A

    Bristan Echo kitchen mixer lever screw.

    Sounds simple but this is causing some aggro. I can't release one of the screws which holds the levers in place. It has a domed/pan combined crosshead/flat blade head and has been in place for some seven years. The water around here is quite aggressive and causes a lot of scale so I guess the...
  12. S

    Grundfos Heating Pump Bleeding Screw

    Can anyone help with a replacement please...i have been a doh doh and dropped the sod under the floor boards!!
  13. R

    Backnut brass wastes vs top screw version

    Wednesday: my day off. I've long been fitting the brass bodied type of waste with the loose overflow connexion and backnut in the belief that they would have superior flow to the plastic-bodied type with a set-screw down the middle that holds the two halves together. Today I removed the...
  14. S

    Outside tap screw query

    on an outside tap what is the reason for the small screw underneath the tap body.
  15. D

    ISOLATION VALVE LEAKING SLIGHTLY FROM SCREW

    Hi!...why is that the simplest of diy jobs turn out to be the ones that go wrong!...? I wanted to change the tap head (including the brass ferrel innard parts inside on my kitchen hot tap. This was because the tap would only turn about one revolution and the flow was either weak then strong (all...
  16. B

    Dismantling tap with no retaining screw - baffled what to do next

    I have a dripping tap which I'm trying to dismantle to see if I can replace a washer. I've removed the cap on one tap but there is no screw underneath as I expected. Below the tap head there is a separate 'skirt' which screws on to the base and I've tried unscrewing both parts but the tap...
  17. Gazzt

    New Danfoss oil pumps / bypass screw

    Just to warn oil boiler engineers, new danfoss oil pumps come setup for a two pipe system, so you have to remove the bypass screw for single pipe installation. It will save you time cleaning soot out and potentially damaging the new pump.
  18. J

    What is this screw for?

    Hi All Can anyone identify what the screw does on this elbow? Does it shut the water flow through the pipe on/off if you turn it, or does turning it cause the water to flow out of the drain pipe next to it? It is one of the boilers connections to the CH circuit. Both have this type of...
  19. P

    Strange bathroom tap

    Hi, New to the forum so just like to say hello all. Joined as I'm a bit stuck and in need of your help. Moved into a 70's built property that has the original green bathroom and quite possibly original fittings. We are making do until we can afford to rip out the bathroom and start...
  20. Stanios

    Rusted Flue Screw

    Hi guys, Customer reported a leak at first I assumed AAV then he sent this photo. Looks like been weeping a while. I can't think of how water can get there so slightly worried. Is this dangerous? Sorry if pic isnt the right way up

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