1474: Screws

2015-01-16T16:02:01Z

Kreuiter:

{{comic
| number = 1474
| date = January 16, 2015
| title = Screws
| image = screws.png
| titletext = If you encounter a hex bolt, but you only brought screwdrivers, you can try sandwiching the head of the bolt between two parallel screwdriver shafts, squeezing the screwdrivers together with a hand at either end, then twisting. It doesn't work and it's a great way to hurt yourself, but you can try it!
}}

==Explanation==
{{incomplete|May still needs expansion, possibly with origins of the various real screws?}}

The comic features various real or imagined types of screws, listed below.

{| class="wikitable"
! style="width: 25%"|Screw type
! Description
|-
| Phillips head
| {{w|List of screw drives#Phillips|Phillips screw drive}} and its corresponding screw head is one of the most recognizable types of screw heads that is commonly used in construction. This type of screw head was named after its inventor, a US businessman {{w|Henry F. Phillips}}. Neither the inventor nor his invention have any relationship to the Dutch electronics manufacturing company with similar, but not exactly the same name {{w|Philips}}.
|-
| Flat head
| {{w|List_of_screw_drives#Slot|Slot head screws}} are frequently erroneously referred to as flat heads (a flat head screw refers, in fact, to the shape of the screw head, regardless of the shape of the drive socket). The slot head is also commonly used in construction. The diagram shows the slot truncated, where in reality the slot almost always runs across the entire head of the screw (as in fictional case of the "uranium screw" below).
|-
| Uh oh. Maybe it's on Amazon? (star-shaped screw)
| Manufacturers sometimes used screws that require special heads in order to remove them, in order to prevent the customer tampering with the product. The reference to Amazon is the speaker's suggestion to look on Amazon.com for the appropriate screwdriver. A number of star-shaped screw heads exist, notably the six-pointed {{w|Torx}}, and Apple's rounded {{w|Pentalobe screw|pentalobe screw}}, although there is no popular design that would use 5-pointed star as a shape, exactly are depicted in the comic. Torx screws are common in automotive applications —they are easier to screw in via electric screwdrivers— and on bicycles where a higher tightening torque is needed than hex screws can support. Disk brakes mounts are where they are now common.

|-
| Cursed -1 Phillips head
| The head of a screw can be stripped by overuse, tightening the screw too much, or other misuse. As the driving surfaces wear away, removing the screw becomes more and more difficult, usually damaging the screw more in the process.
The addition of "cursed" and "-1" in the titles is a reference to various fantasy games (E.g. Dungeons and Dragons), where magical items which have been damaged or are denoted as cursed or have a rating of a negative integer. This often makes the cursed equipment incredibly difficult to remove, as it will cling to the wielder: much like how the "cursed" Phillips Head screw becomes difficult to remove due to damage.
Additionally, Phillips bit sizes are numbered, with larger numbers denoting smaller bits. The most common sizes are #2, #1, and #0. There are no negative sizes; smaller bits than #0 are indicated by repeating zeroes, for example #00. The "-1" could refer to an imaginary size smaller than any real Phillips bit that would now fit in the stripped out head.

Or, it could just mean a Pozidriv head.
|-
| Rivet
| A {{w|rivet}} is not a screw - it is a permanent fastener which is secured by deforming the body of the fastener. Rivets cannot be removed with a screwdriver, they must be "drilled out". Some bolts also have rounded rivet-style heads, though, with no means of gripping them.
|-
| Phillips head ruiner (hex screw)
| A reference to the fact that {{w|List_of_screw_drives#Hex_socket|hex socket}} screws can, in a pinch, be removed with a Phillips screwdriver, but will likely damage the driver in the process. Hex screws are common on bicycles, where they always come in the metric varieties. The same holds for hex screws which ship with Ikea furniture —who bundle a low-quality hex driver for those people who lack them. Imperial-sized hex screws do sometimes surface, to the dissatisfaction of anyone who owns a hex driver set. The smaller hex screws can enter the "-1" state when attempting to unscrew one that has been overtightened —hence the adoption of Torx screws in high-torque applications.

|-
| Uranium screw
| Uranium screws were [http://blog.nuclearsecrecy.com/2014/11/10/fat-mans-uranium/ used] in the [http://www.osti.gov/scitech/biblio-page/769001/8/72 construction] of [http://www.scintillators.ru/booc/criticality/reports/ref_050.pdf nuclear weapons] during the twentieth century.
|-
| Phillip's head
| This is a literal (and rather morbid) interpretation of the misspelling "Phillip's head" when "Phillips head" is meant. Rather than refer to the screw type, this "screw" is actually a bloody bag containing the severed head of someone named Phillip. It could possibly be an allusion to one of the {{w|Decapitation|decapitations}} of the royal persons that took place several times in the human history, perhaps even more specifically to {{w|French Revolution|revolutionary France}} where {{w|Capital punishment|capital punishment}} by decapitation was made well-known due to introduction of {{w|Guillotine|guillotine}} and its active use against the former royalty. However, despite the {{w|Philip|name Phillip being used by several members of the upper echelon of French royalty}}, none of the {{w|List of people who were beheaded|famous people ever executed this way in France or anywhere else}} were called Phillip, although {{w|Louis Philippe II, Duke of Orléans|Philippe Égalité}}, the adopted name of Louis Philippe Joseph d'Orléans,''was'' guillotined. Intentionally or otherwise, this last punchline could be described as a "mind screw".
|-
|Hex bolt (title text)
|A {{w|List_of_screw_drives#Hex|hex bolt}} has six external sides, so it could in theory be held by squeezing two screwdriver shafts together with the bolt in between. The amount of force on the two screwdriver shafts needed to turn the hex bolt will probably exceed the strength of human hands and would most likely result in hurting your hands and not in turning the bolt.
|}

==Transcript==
:[Eight drawings of different types of heads each with a caption:]
:Phillips head
:Flat head
:Uh oh. Maybe it's on Amazon?
:Cursed –1 Phillips head
:Crap, it's a ''rivet''.
:Phillips-head ruiner
:Uranium screw (a real thing)
:Phillip's head

{{comic discussion}}

Talk:1474: Screws

2015-01-16T08:03:12Z

Kreuiter:

This page is now on the first page of google for "uranium screw". [[User:Mrmakeit|Mrmakeit]] ([[User talk:Mrmakeit|talk]]) 05:31, 16 January 2015 (UTC)

I don't think that patent is the right one, it seems to describe a uranium decontamination procedure, not a screw made of uranium like in the comic. [[User:LeoDeQuirm|LeoDeQuirm]] ([[User talk:LeoDeQuirm|talk]]) 05:46, 16 January 2015 (UTC)

I'm pretty sure the "uranium screw" is just a reference to the fact that the head of the screw appears to have split in two ("fissioned"), as opposed to a normal flat head screw that still has the edges connected. [[User:Sam887|Sam887]] ([[User talk:Sam887|talk]]) 05:50, 16 January 2015 (UTC)

Just a shot in the dark here, but a company that sells uranium ore and radiological equipment happens to also sell screws for one of its Geigers that look just like the screw cross-section in the comic. [http://www.uraniumrocks.com/products/replacement-circuit-board-mount-screws-for-victoreen-cdv-700-short] [[User:Conqu2|Conqu2]] ([[User talk:Conqu2|talk]]) 06:01, 16 January 2015 (UTC)

I was wondering if the "uranium screw" was referring to the Demon Core -- two hemispherical domes that Louis Slotin was holding apart with a screwdriver. Then I remembered the Demon Core was plutonium, not uranium. [[Special:Contributions/173.245.48.119|173.245.48.119]] 06:49, 16 January 2015 (UTC)

I think the be was going for apple's pentalobe screw with the 5 ponted star

I don't think the uranium screws are named for their use in stuff to do with uranium, as I have both seen and used screws that look like that before. It's basically a flat head screw whose divot extends all the way across the face of the screw. I agree more with the previous commentor who notes that the screw looks like it has fissioned. [[Special:Contributions/108.162.237.182|108.162.237.182]] 06:34, 16 January 2015 (UTC)

An actual rivet is neither a screw nor a bolt; it's a fastener that is placed and then has one end plastically deformed -- traditionally by a rivet gun, but more often in smaller sizes by some sort of press or clamp. (Pop rivets are hollow, and are deformed by pulling a cone-sheaped wedge into the open end of the hollow core.) There's no way to remove one except to destroy it (drill it out or cut one end off). The item pictured could also be the head of a carriage bolt, but that's no help if you can't get at the other end of the bolt. Randall is slightly pessemistic, though: there *are* some "security" screws and bolts that use a slightly-elliptical domed head that's hard to tell from a rivet; they can be unscrewed, but only with a matching slightly-elliptical socket. [[Special:Contributions/199.27.133.70|199.27.133.70]] 06:35, 16 January 2015 (UTC)

All of which can be removed by a sonic screwdriver. Totally a real thing.

Could the "cursed -1" be a Nethack reference? I don't know if Dungeons and Dragons has the "blessed/uncursed/cursed" status, but in Nethack cursed items with negative enchantments (denoted "cursed -whatever") are a pretty common occurrence. [[Special:Contributions/199.27.133.25|199.27.133.25]] 07:31, 16 January 2015 (UTC)

In Nethack, Cursed objects cannot be removed. Seems appropriate. At first I thought it was a pozidrive screw head. Posts on the fission screw head: where have you seen screws whose divot does *not* extend across the head?

[[User:Kreuiter|Kreuiter]] ([[User talk:Kreuiter|talk]]) 08:03, 16 January 2015 (UTC)from wikipedia: Louis Philippe Joseph d'Orléans (13 April 1747 – 6 November 1793) commonly known as Philippe, was a member of a cadet branch of the House of Bourbon, the ruling dynasty of France. He actively supported the French Revolution and adopted the name Philippe Égalité, but was nonetheless guillotined during the Reign of Terror

explain xkcd - User contributions [en]

1474: Screws

Talk:1474: Screws