The CB1100 Community Forum

Some of us know about this, some dont. For new members, and any veteran members that might not know know, I am resurrecting a post about the difference between Phillips head screws and JIS Cross Head screws. Every screw on our bikes that look like a Phillips are actually JIS Cross Heads, and using the wrong screw driver can, and will eventually damage the screw head. Here is the explanation thread:
http://cb1100forum.com/forum/showthread.php?tid=12665 .

One of the best makers of JIS tools is Vessel, a Japanese company with a long history of quality tools. One of the largest suppliers of Vessel tools in the U.S., vesseltools.com ( JDV Products ) has offered Forum members a discount:
http://www.cb1100forum.com/forum/showthr...?tid=12739 .

While we are all cooped up due to the pandemic, I thought at very least this info would be interesting. At most, moderately priced but very useful quality tools to do the job right. I think the main interest for us would be JIS screw driver bits, screw drivers, impact 980 screw driver, and 25001 hand impact driver. The screws on our master cylinder covers are JIS #2. Both JIS and non JIS are carried by this company, so those that ARE JIS have a light gray JIS logo in the listing for the tool.

I love my Vessel JIS screw drivers!

(04-14-2020, 01:33 AM)Lord Popgun_imp Wrote: [ -> ]I love my Vessel JIS screw drivers!

Me too

I've had a set of JIS screwdrivers in my toolbox for years. I read an article recently about JIS, that said that Japanese vehicles are increasingly using standard Phillips screws and that JIS is phasing out, but can't remember where I read it.

My friend is working on a 1933 Rolls in his shop. He had to track down a set of Whitworth wrenches to work on it.

Gosh, I gave away a whole tool box full of Whitworth tools years ago, years after getting rid of my BSA 750 triple.

I have used the Vessel JIS screw drivers for years , they are very good.

(04-14-2020, 01:58 AM)Gone in 60_imp Wrote: [ -> ]I've had a set of JIS screwdrivers in my toolbox for years. I read an article recently about JIS, that said that Japanese vehicles are increasingly using standard Phillips screws and that JIS is phasing out, but can't remember where I read it.

My friend is working on a 1933 Rolls in his shop. He had to track down a set of Whitworth wrenches to work on it.

Because I'm also into vintage British bikes I have a full set of Whitworth wrenches and sockets - as well as SAE and metric.
All needs are covered

(04-14-2020, 03:25 AM)Rocky_imp Wrote: [ -> ]

(04-14-2020, 01:58 AM)Gone in 60_imp Wrote: [ -> ]I've had a set of JIS screwdrivers in my toolbox for years. I read an article recently about JIS, that said that Japanese vehicles are increasingly using standard Phillips screws and that JIS is phasing out, but can't remember where I read it.

My friend is working on a 1933 Rolls in his shop. He had to track down a set of Whitworth wrenches to work on it.

Because I'm also into vintage British bikes I have a full set of Whitworth wrenches and sockets - as well as SAE and metric.
All needs are covered

Because I'm also into vintage British bikes I have a full set of Whitworth wrenches and sockets - as well as SAE and metric.
All needs are covered
Nice to know about this handy/all needs Halifax garage...during my trip to Newfoundland this summer???....just in case

(04-14-2020, 03:48 AM)peterbaron_imp Wrote: [ -> ]

(04-14-2020, 03:25 AM)Rocky_imp Wrote: [ -> ]

(04-14-2020, 01:58 AM)Gone in 60_imp Wrote: [ -> ]I've had a set of JIS screwdrivers in my toolbox for years. I read an article recently about JIS, that said that Japanese vehicles are increasingly using standard Phillips screws and that JIS is phasing out, but can't remember where I read it.

My friend is working on a 1933 Rolls in his shop. He had to track down a set of Whitworth wrenches to work on it.

Because I'm also into vintage British bikes I have a full set of Whitworth wrenches and sockets - as well as SAE and metric.
All needs are covered

Because I'm also into vintage British bikes I have a full set of Whitworth wrenches and sockets - as well as SAE and metric.
All needs are covered
Nice to know about this handy/all needs Halifax garage...during my trip to Newfoundland this summer???....just in case

Because I'm also into vintage British bikes I have a full set of Whitworth wrenches and sockets - as well as SAE and metric.
All needs are covered
Nice to know about this handy/all needs Halifax garage...during my trip to Newfoundland this summer???....just in case
Notice the decal at the top of the display

I think Honda phased out JIS screws 20 years ago or more, although there may be some electrical sub-assemblies that have them, and on carbs. I remember back in the points and condensor days, JIS screws holding them on had a different thread pitch, so lots of points plates got stripped as a result.

Countersunk screw heads like the 4mm ones on master cylinder caps are hard to loosen because they have a lot of surface contact area (and friction) under the head, and are prone to corrosion. A cross (+) is used in that application so that the 4mm threads aren't easily snapped off, as if it would be with a hex bolt or hex socket head. When removing master cylinder covers, I usually just grab the hand impact driver and give it a light tap to break it free, never fails.