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#1
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JIS japan
do all JIS standard jap screws have a dot on their heads ?
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#2
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JIS japan
On Fri, 10 Jul 2020 11:09:53 +0100, "Jim GM4DHJ ..."
wrote: do all JIS standard jap screws have a dot on their heads ? https://lmgtfy.com/?q=do+all+JIS+standard+jap+screws+have+a+dot+on+th eir+heads+%3F&s=l Cheers, T i m |
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#3
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JIS japan
On 10/07/2020 12:19, T i m wrote:
On Fri, 10 Jul 2020 11:09:53 +0100, "Jim GM4DHJ ..." wrote: do all JIS standard jap screws have a dot on their heads ? https://lmgtfy.com/?q=do+all+JIS+standard+jap+screws+have+a+dot+on+th eir+heads+%3F&s=l Cheers, T i m That will have informed the ignorant like you what a JIS screw is.... looks like not all of them have the dot....I have three pieces of identical jap equipment two have dots one doesn't... -- This email has been checked for viruses by AVG. https://www.avg.com |
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#4
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JIS japan
On 10/07/2020 12:19, T i m wrote:
On Fri, 10 Jul 2020 11:09:53 +0100, "Jim GM4DHJ ..." wrote: do all JIS standard jap screws have a dot on their heads ? https://lmgtfy.com/?q=do+all+JIS+standard+jap+screws+have+a+dot+on+th eir+heads+%3F&s=l Cheers, T i m no point in having this news group if all you can do it google it ..... -- This email has been checked for viruses by AVG. https://www.avg.com |
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#5
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JIS japan
On 10/07/2020 12:39, Jim GM4DHJ ... wrote:
On 10/07/2020 12:19, T i m wrote: On Fri, 10 Jul 2020 11:09:53 +0100, "Jim GM4DHJ ..." wrote: do all JIS standard jap screws have a dot on their heads ? https://lmgtfy.com/?q=do+all+JIS+standard+jap+screws+have+a+dot+on+th eir+heads+%3F&s=l Cheers, T i m That will have informed the ignorant like you what a JIS screw is.... looks like not all of them have the dot....I have three pieces of identical jap equipment two have dots one doesn't... they probably don't use them on his sex toys.... |
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#6
Posted to uk.d-i-y
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JIS japan
Jim GM4DHJ ... wrote:
On 10/07/2020 12:19, T i m wrote: On Fri, 10 Jul 2020 11:09:53 +0100, "Jim GM4DHJ ..." wrote: do all JIS standard jap screws have a dot on their heads ? https://lmgtfy.com/?q=do+all+JIS+standard+jap+screws+have+a+dot+on+th eir+heads+%3F&s=l Cheers, T i m no point in having this news group if all you can do it google it ..... https://www.instructables.com/id/Whe...ot-a-Phillips/ "Often improperly referred to as Japanese Phillips. Commonly found in Japanese equipment. JIS looks much like a Phillips screw (and even more similar to Frearson), but is designed not to cam out and will, therefore, be damaged by a Phillips screwdriver if it is too tight. Heads are usually identifiable by a single raised dot to one side of the cross slot. JIS B 1012:1985 screw standard is throughout the Asia market and Japanese imports. The driver has a 57 degree point with a flat tip, parallel wings. Advantages and Disadvantages of JIS Most people and companies outside of Japan have absolutely no idea what they are. With the similarity in appearance to the Frearson and the Phillips the screws are often damaged in removing and installing with the wrong tools. JIS tends not to camout like Philips. The JIS driver can be used on Phillips quite easily but not reciprocally. Drivers are not easily available in North America, try your local RC Airplane hobby shop. Most RC Helicopters use JIS screws to mount the propeller. JIS-spec cross-head screws are generally marked with a single raised dot or an "X". JIS always fit Phillip fasteners, but because of slight design differences, Phillips drivers may not fit JIS fasteners. (unless the tip is ground down a bit)." From the comments section of the article at the bottom: "I have read in service manuals that the dot/dimple found on screws inside Japanese equipment alerts the technician that the screw conforms to ISO specifications, not JIS. This refers to the metric THREAD, not the driver type." Lots of theories, and specs that cost $90 a copy. Even if you went to a fastener store, you likely wouldn't get the correct answer. (We have a fastener store here.) Paul |
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#7
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JIS japan
On 10/07/2020 15:45, Paul wrote:
Jim GM4DHJ ... wrote: On 10/07/2020 12:19, T i m wrote: On Fri, 10 Jul 2020 11:09:53 +0100, "Jim GM4DHJ ..." wrote: do all JIS standard jap screws have a dot on their heads ? https://lmgtfy.com/?q=do+all+JIS+standard+jap+screws+have+a+dot+on+th eir+heads+%3F&s=l Cheers, T i m no point in having this news group if all you can do it google it ..... https://www.instructables.com/id/Whe...ot-a-Phillips/ Â*Â* "Often improperly referred to as Japanese Phillips. Commonly found Â*Â*Â* in Japanese equipment. JIS looks much like a Phillips screw (and even Â*Â*Â* more similar to Frearson), but is designed not to cam out and will, Â*Â*Â* therefore, be damaged by a Phillips screwdriver if it is too tight. Â*Â*Â* Heads are usually identifiable by a single raised dot to one side Â*Â*Â* of the cross slot. JIS B 1012:1985 screw standard is throughout the Â*Â*Â* Asia market and Japanese imports. The driver has a 57 degree point Â*Â*Â* with a flat tip, parallel wings. Â*Â*Â* Advantages and Disadvantages of JIS Â*Â*Â* Most people and companies outside of Japan have absolutely no idea Â*Â*Â* what they are. With the similarity in appearance to the Frearson and Â*Â*Â* the Phillips the screws are often damaged in removing and installing Â*Â*Â* with the wrong tools. JIS tends not to camout like Philips. Â*Â*Â* The JIS driver can be used on Phillips quite easily but not reciprocally. Â*Â*Â* Drivers are not easily available in North America, try your local Â*Â*Â* RC Airplane hobby shop. Most RC Helicopters use JIS screws to mount Â*Â*Â* the propeller. JIS-spec cross-head screws are generally marked with a Â*Â*Â* single raised dot or an "X". JIS always fit Phillip fasteners, but Â*Â*Â* because of slight design differences, Phillips drivers may not fit Â*Â*Â* JIS fasteners. (unless the tip is ground down a bit)." From the comments section of the article at the bottom: Â*Â* "I have read in service manuals that the dot/dimple found on screws Â*Â*Â* inside Japanese equipment alerts the technician that the screw conforms Â*Â*Â* to ISO specifications, not JIS. This refers to the metric THREAD, Â*Â*Â* not the driver type." Lots of theories, and specs that cost $90 a copy. Even if you went to a fastener store, you likely wouldn't get the correct answer. (We have a fastener store here.) Â*Â* Paul we don't -- This email has been checked for viruses by AVG. https://www.avg.com |
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#8
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JIS japan
On 10/07/2020 15:45, Paul wrote:
Jim GM4DHJ ... wrote: On 10/07/2020 12:19, T i m wrote: On Fri, 10 Jul 2020 11:09:53 +0100, "Jim GM4DHJ ..." wrote: do all JIS standard jap screws have a dot on their heads ? https://lmgtfy.com/?q=do+all+JIS+standard+jap+screws+have+a+dot+on+th eir+heads+%3F&s=l Cheers, T i m no point in having this news group if all you can do it google it ..... https://www.instructables.com/id/Whe...ot-a-Phillips/ Â*Â* "Often improperly referred to as Japanese Phillips. Commonly found Â*Â*Â* in Japanese equipment. JIS looks much like a Phillips screw (and even Â*Â*Â* more similar to Frearson), but is designed not to cam out and will, Â*Â*Â* therefore, be damaged by a Phillips screwdriver if it is too tight. Â*Â*Â* Heads are usually identifiable by a single raised dot to one side Â*Â*Â* of the cross slot. JIS B 1012:1985 screw standard is throughout the Â*Â*Â* Asia market and Japanese imports. The driver has a 57 degree point Â*Â*Â* with a flat tip, parallel wings. Â*Â*Â* Advantages and Disadvantages of JIS Â*Â*Â* Most people and companies outside of Japan have absolutely no idea Â*Â*Â* what they are. With the similarity in appearance to the Frearson and Â*Â*Â* the Phillips the screws are often damaged in removing and installing Â*Â*Â* with the wrong tools. JIS tends not to camout like Philips. Â*Â*Â* The JIS driver can be used on Phillips quite easily but not reciprocally. Â*Â*Â* Drivers are not easily available in North America, try your local Â*Â*Â* RC Airplane hobby shop. Most RC Helicopters use JIS screws to mount Â*Â*Â* the propeller. JIS-spec cross-head screws are generally marked with a Â*Â*Â* single raised dot or an "X". JIS always fit Phillip fasteners, but Â*Â*Â* because of slight design differences, Phillips drivers may not fit Â*Â*Â* JIS fasteners. (unless the tip is ground down a bit)." From the comments section of the article at the bottom: Â*Â* "I have read in service manuals that the dot/dimple found on screws Â*Â*Â* inside Japanese equipment alerts the technician that the screw conforms Â*Â*Â* to ISO specifications, not JIS. This refers to the metric THREAD, Â*Â*Â* not the driver type." Lots of theories, and specs that cost $90 a copy. Even if you went to a fastener store, you likely wouldn't get the correct answer. (We have a fastener store here.) Â*Â* Paul Easy enough to get good quality JIS screwdrivers via eBay or Amazon, although not cheap. I bought a couple of very small ones to do a minor camera repair. |
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#9
Posted to uk.d-i-y
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JIS japan
On 10/07/2020 16:57, newshound wrote:
On 10/07/2020 15:45, Paul wrote: Jim GM4DHJ ... wrote: On 10/07/2020 12:19, T i m wrote: On Fri, 10 Jul 2020 11:09:53 +0100, "Jim GM4DHJ ..." wrote: do all JIS standard jap screws have a dot on their heads ? https://lmgtfy.com/?q=do+all+JIS+standard+jap+screws+have+a+dot+on+th eir+heads+%3F&s=l Cheers, T i m no point in having this news group if all you can do it google it ..... https://www.instructables.com/id/Whe...ot-a-Phillips/ Â*Â*Â* "Often improperly referred to as Japanese Phillips. Commonly found Â*Â*Â*Â* in Japanese equipment. JIS looks much like a Phillips screw (and even Â*Â*Â*Â* more similar to Frearson), but is designed not to cam out and will, Â*Â*Â*Â* therefore, be damaged by a Phillips screwdriver if it is too tight. Â*Â*Â*Â* Heads are usually identifiable by a single raised dot to one side Â*Â*Â*Â* of the cross slot. JIS B 1012:1985 screw standard is throughout the Â*Â*Â*Â* Asia market and Japanese imports. The driver has a 57 degree point Â*Â*Â*Â* with a flat tip, parallel wings. Â*Â*Â*Â* Advantages and Disadvantages of JIS Â*Â*Â*Â* Most people and companies outside of Japan have absolutely no idea Â*Â*Â*Â* what they are. With the similarity in appearance to the Frearson and Â*Â*Â*Â* the Phillips the screws are often damaged in removing and installing Â*Â*Â*Â* with the wrong tools. JIS tends not to camout like Philips. Â*Â*Â*Â* The JIS driver can be used on Phillips quite easily but not reciprocally. Â*Â*Â*Â* Drivers are not easily available in North America, try your local Â*Â*Â*Â* RC Airplane hobby shop. Most RC Helicopters use JIS screws to mount Â*Â*Â*Â* the propeller. JIS-spec cross-head screws are generally marked with a Â*Â*Â*Â* single raised dot or an "X". JIS always fit Phillip fasteners, but Â*Â*Â*Â* because of slight design differences, Phillips drivers may not fit Â*Â*Â*Â* JIS fasteners. (unless the tip is ground down a bit)." Â*From the comments section of the article at the bottom: Â*Â*Â* "I have read in service manuals that the dot/dimple found on screws Â*Â*Â*Â* inside Japanese equipment alerts the technician that the screw conforms Â*Â*Â*Â* to ISO specifications, not JIS. This refers to the metric THREAD, Â*Â*Â*Â* not the driver type." Lots of theories, and specs that cost $90 a copy. Even if you went to a fastener store, you likely wouldn't get the correct answer. (We have a fastener store here.) Â*Â*Â* Paul Easy enough to get good quality JIS screwdrivers via eBay or Amazon, although not cheap. I bought a couple of very small ones to do a minor camera repair. can you publish a link or two...need to get some.... -- This email has been checked for viruses by AVG. https://www.avg.com |
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#10
Posted to uk.d-i-y
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JIS japan
Jim GM4DHJ ... wrote:
On 10/07/2020 12:19, T i m wrote: On Fri, 10 Jul 2020 11:09:53 +0100, "Jim GM4DHJ ..." wrote: do all JIS standard jap screws have a dot on their heads ? https://lmgtfy.com/?q=do+all+JIS+standard+jap+screws+have+a+dot+on+th eir+heads+%3F&s=l Cheers, T i m That will have informed the ignorant like you what a JIS screw is.... looks like not all of them have the dot....I have three pieces of identical jap equipment two have dots one doesn't... Are you sure they are JIS and not some generic €˜cross head out of a cheap factory somewhere? Cheap screws dont always follow the recognised standards. If nothing else, have you ever seen a proper JIS screwdriver in the UK? You see Phillips and Pozi drive but I dont recall ever seeing a JIS one. -- https://www.unitedway.org/our-impact...an-trafficking |
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#11
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JIS japan
On 10/07/2020 18:13, Brian Reay wrote:
Jim GM4DHJ ... wrote: On 10/07/2020 12:19, T i m wrote: On Fri, 10 Jul 2020 11:09:53 +0100, "Jim GM4DHJ ..." wrote: do all JIS standard jap screws have a dot on their heads ? https://lmgtfy.com/?q=do+all+JIS+standard+jap+screws+have+a+dot+on+th eir+heads+%3F&s=l Cheers, T i m That will have informed the ignorant like you what a JIS screw is.... looks like not all of them have the dot....I have three pieces of identical jap equipment two have dots one doesn't... Are you sure they are JIS and not some generic €˜cross head out of a cheap factory somewhere? Cheap screws dont always follow the recognised standards. If nothing else, have you ever seen a proper JIS screwdriver in the UK? You see Phillips and Pozi drive but I dont recall ever seeing a JIS one. yes japanese JIS standard screws some with punched dots are found on jap motor bikes and I have them on genuine japanese swr bridges I have here the 110 and the tal172 which nobody has heard of.....for years I was using phillips etc drivers but I must get a good set of JIL screwdrivers after all these years of chewing up nice jap screws.. ..have a close look at some genuine jap gear you may have and you will see the dot on the head showing it is JIL standard.....let me know what you find I would be interested...never noticed it before myself....hope you are well...we can now go to the caravan starting today....which is good |
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#12
Posted to uk.d-i-y
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JIS japan
On Fri, 10 Jul 2020 17:27:43 +0100, "Jim GM4DHJ ..."
wrote: snip Easy enough to get good quality JIS screwdrivers via eBay or Amazon, although not cheap. I bought a couple of very small ones to do a minor camera repair. can you publish a link or two...need to get some.... Please? https://lmgtfy.com/?q=JIS+screwdrivers Maybe he can pop round and do your dinner (cook stuff from your free food handout), give you a bed bath and any other little jobs you cba to do yourself? Cheers, T i m |
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#13
Posted to uk.d-i-y
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JIS japan
Jim GM4DHJ ... wrote:
On 10/07/2020 18:13, Brian Reay wrote: Jim GM4DHJ ... wrote: On 10/07/2020 12:19, T i m wrote: On Fri, 10 Jul 2020 11:09:53 +0100, "Jim GM4DHJ ..." wrote: do all JIS standard jap screws have a dot on their heads ? https://lmgtfy.com/?q=do+all+JIS+standard+jap+screws+have+a+dot+on+th eir+heads+%3F&s=l Cheers, T i m That will have informed the ignorant like you what a JIS screw is.... looks like not all of them have the dot....I have three pieces of identical jap equipment two have dots one doesn't... Are you sure they are JIS and not some generic €˜cross head out of a cheap factory somewhere? Cheap screws dont always follow the recognised standards. If nothing else, have you ever seen a proper JIS screwdriver in the UK? You see Phillips and Pozi drive but I dont recall ever seeing a JIS one. yes japanese JIS standard screws some with punched dots are found on jap motor bikes and I have them on genuine japanese swr bridges I have here the 110 and the tal172 which nobody has heard of.....for years I was using phillips etc drivers but I must get a good set of JIL screwdrivers after all these years of chewing up nice jap screws.. ..have a close look at some genuine jap gear you may have and you will see the dot on the head showing it is JIL standard.....let me know what you find I would be interested...never noticed it before myself....hope you are well...we can now go to the caravan starting today....which is good Im familiar with the JIS dot etc. The points I was making we Not everyone makes their screws to one of the standards. Some cheap screws have some vague x head which doesnt seem to be anything in particular. For example, I looked inside a bit of cheap electronics today to check something. The screws (lots of them) had a shallow x head which isnt anything in particular. JIS drivers are like hens teeth here. Unless the application is a high torque one, Pozi are ok for JIS but they will slip in high torque situations. A Phillips will slip earlier. So, on a motorcycle engine, getting a JIS driver is a good move. Less critical for, say, a screw holding two bits of plastic together on a cover etc. All well here, just been busy- lots to catch up on. -- https://www.unitedway.org/our-impact...an-trafficking |
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#14
Posted to uk.d-i-y
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JIS japan
On 10/07/2020 20:44, Brian Reay wrote:
Jim GM4DHJ ... wrote: On 10/07/2020 18:13, Brian Reay wrote: Jim GM4DHJ ... wrote: On 10/07/2020 12:19, T i m wrote: On Fri, 10 Jul 2020 11:09:53 +0100, "Jim GM4DHJ ..." wrote: do all JIS standard jap screws have a dot on their heads ? https://lmgtfy.com/?q=do+all+JIS+standard+jap+screws+have+a+dot+on+th eir+heads+%3F&s=l Cheers, T i m That will have informed the ignorant like you what a JIS screw is.... looks like not all of them have the dot....I have three pieces of identical jap equipment two have dots one doesn't... Are you sure they are JIS and not some generic €˜cross head out of a cheap factory somewhere? Cheap screws dont always follow the recognised standards. If nothing else, have you ever seen a proper JIS screwdriver in the UK? You see Phillips and Pozi drive but I dont recall ever seeing a JIS one. yes japanese JIS standard screws some with punched dots are found on jap motor bikes and I have them on genuine japanese swr bridges I have here the 110 and the tal172 which nobody has heard of.....for years I was using phillips etc drivers but I must get a good set of JIL screwdrivers after all these years of chewing up nice jap screws.. ..have a close look at some genuine jap gear you may have and you will see the dot on the head showing it is JIL standard.....let me know what you find I would be interested...never noticed it before myself....hope you are well...we can now go to the caravan starting today....which is good Im familiar with the JIS dot etc. The points I was making we Not everyone makes their screws to one of the standards. Some cheap screws have some vague x head which doesnt seem to be anything in particular. For example, I looked inside a bit of cheap electronics today to check something. The screws (lots of them) had a shallow x head which isnt anything in particular. JIS drivers are like hens teeth here. Unless the application is a high torque one, Pozi are ok for JIS but they will slip in high torque situations. A Phillips will slip earlier. So, on a motorcycle engine, getting a JIS driver is a good move. Less critical for, say, a screw holding two bits of plastic together on a cover etc. All well here, just been busy- lots to catch up on. oh right |
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#15
Posted to uk.d-i-y
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JIS japan
On 10/07/2020 19:18, T i m wrote:
On Fri, 10 Jul 2020 17:27:43 +0100, "Jim GM4DHJ ..." wrote: snip Easy enough to get good quality JIS screwdrivers via eBay or Amazon, although not cheap. I bought a couple of very small ones to do a minor camera repair. can you publish a link or two...need to get some.... Please? https://lmgtfy.com/?q=JIS+screwdrivers Maybe he can pop round and do your dinner (cook stuff from your free food handout), give you a bed bath and any other little jobs you cba to do yourself? Cheers, T i m that would be nice..... |
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