What does IWH mean

[cessna]

I am building a steam donkey, in the hardware list it calls for some steel iwh flat head and and some iwh steel fastenings, does anyone know what they mean by iwh?
Terry

 

[John Rudd]

Iron Wrought Hot...... maybe?

 

[Artie]

Institute of Womens Health.. but somehow I dont think........ ;D

 

[wheeltapper]

After a search on google the only thing I can find that has any bearing at all to fixings is Impact Wrench Head.

but even that doesn't make a lot of sense.

there's an acronym search but that has just got

IWH Institute for Work & Health
IWH Institute for Women's Health
IWH I Was Here
IWH Instantaneous Water Heater

No not really :big: :big:

sorry, no more ideas.

bet its something bloody obvious. ???

Roy

 

[Jasonb]

Instrument Whitworth possibly

Can you give an idea of teh sizes and that may tie it down if they are small threads below 0.100".

Jason

 

[tel]

I couldn't turn anything up either.

Iguanas With Headaches?

 

[wheeltapper]

Impossible word hunt. ;D

Roy

 

[cessna]

The list calls for 6 8-32x1/2 iwh flat head and 6 8/32x1/2 steel iwh???

 

[Deanofid]

I don't know what those letters stand for, but 8-32 is a regular American machine screw size.

 

[te_gui]

I think its "Internal Wrench Head" aka socket head capscrews

Brian

 

[jct842]

yup allen head cap screws must be it. john

 

[Lew Hartswick]

yup allen head cap screws must be it. john

I would say "socket flat head" but whatever.
One of my "pet peeves" is people that use an acronym or abbreviation without
defining it on the first use. :-(
...lew...

 

[1Kenny]

XL Screw Corporation seems to have them in self-tapping and machine screws.

http://www.xlscrew-xla.com/xlscrew/Stock-Catalog.htm

Still haven't figured what it means, but it must have something to do with the head.

Kenny

 

[deere_x475guy]

Inept Woman Hillary????

 

[GailInNM]

Indented Hex Washer
Has a formed hex head with an integrated washer. The top of the head has a slight depression (indented).
Can have a slot or not for screwdriver tightening.

 

[Captain Jerry]

The XL Screw site shows the reference as IHW, not IWH, but after a group of sizes with IHW, they show a screw described as "Indented Head (Without Washer)" so my guess js that it means Indented Head with Washer" . Where are they used?

Jerry

 

[cessna]

OK thanks for the replies, indented wrench head might be it as a picture in the plans shows a counter sunk flat head bolt, why he would not just call it an allen head I dont know.
Terry

 

[tel]

Not so much Allen heads I think, but the recessed hex heads as found on tek screws - at least that's what an image search for IHW keeps throwing up.

 

[Maryak]

I read something, (can't remember what ), but the W & H are referring to width and height of the head and nut because as I understand it there are standard, locking and heavy, which vary in size. Not much but perhaps this will give things a nudge towards the answer.

Hope it helps.

Best Regards
Bob

 

[cessna]

Thanks for all the info, on reading further on the plan I found mention of an "internal wrench head" bolt. ??