The Ford Barn

Chris H · 07-28-2017, 12:26 PM

I grew up in an old time hardware store, and 40 years ago we stocked #12-24 fasteners as a regular item. I don't know when it occurred, but the #12-24 started disappearing from our suppliers. I think the machine screw numbering system was aligned with the wood screws and sheet metal screw numbering system. The head sizes, especially the flat head screws, are sized the same as the wood screws. We never thought of them as a gage size, but referred to them by number (#), such as #12-24, #10-24, & etc. The gage size did not relate, as Terry says, they are opposite, with the numbering in opposite directions, size wise. For example 10 ga steel is .1046" thick while a #10 screw is .190". No correlation.

2manycars · 07-28-2017, 03:07 PM

My local bolt supplier stocks 12-24, and the local hardware store also has them. I have them in my stock also. Nothing strange about 12-24.

MikeK · 07-28-2017, 04:39 PM

If you ever had a classic British motorcycle you did the
British Standard Whitworth Thread dance.

Terry, NJ · 07-28-2017, 05:18 PM

Just to be sure no one makes any mistakes about this subject, I'm going to list some of the lesser known thread sizes. Both fractional and the numerical systems.
0 X 80, 1 X 72 & 80, 2 X 56 and I will skip over some, 3 X 48, 4 X 36 & 40 , 5 X 40, Here's one you weren't expecting 7 X 32 and 9 X 32, 10 X 32, 24, 28, 30, Then the 12s in24, 28 & 32, And the ever popular 14 X 20 & 24 (major Dia .242) And the small fract. sizes by 1/64 th
to 15/64 X24 . 15/64 is .235 , #14 is .242 and of course 1/4 is .250. So you see, the magical world of threads is a deep bottomless pit. I got go eat now, but you see what I mean. Terry

clo2jim · 07-28-2017, 05:47 PM

Tinbasher - #14

Dixie Upholsteries Inc in Kitchener, Ontario has 12-24 Robertson Head Countersunk head bolts for the Floorboard. I got some from him at the Fall Barrie Auto Flea Market

Website is www.dixies.ca

Address: 92 Harber Ave, Kitchener, ON N2C 1Z2

Phone: (519) 748-1648

Province: Ontario

Jim

Tinbasher · 07-28-2017, 05:53 PM

Sponsored Links (Register now to hide all advertisements)

Thanks Jim I'll give them a call.

John P.

07-28-2017, 12:26 PM	#21
Chris H Senior Member Join Date: Oct 2011 Location: Wood River, IL Posts: 119	Re: Henry's Bizarro threads! I grew up in an old time hardware store, and 40 years ago we stocked #12-24 fasteners as a regular item. I don't know when it occurred, but the #12-24 started disappearing from our suppliers. I think the machine screw numbering system was aligned with the wood screws and sheet metal screw numbering system. The head sizes, especially the flat head screws, are sized the same as the wood screws. We never thought of them as a gage size, but referred to them by number (#), such as #12-24, #10-24, & etc. The gage size did not relate, as Terry says, they are opposite, with the numbering in opposite directions, size wise. For example 10 ga steel is .1046" thick while a #10 screw is .190". No correlation. __________________ Chris H. 1930 Tudor 1964 MGB 1979 MGB Ham call: N9WHH

07-28-2017, 03:07 PM	#22
2manycars Senior Member Join Date: May 2010 Location: Eastern CT Posts: 2,732	Re: Henry's Bizarro threads! My local bolt supplier stocks 12-24, and the local hardware store also has them. I have them in my stock also. Nothing strange about 12-24. __________________ Bill www.brauchauto.com

07-28-2017, 04:39 PM	#23
MikeK Senior Member Join Date: May 2010 Location: Windy City Posts: 2,919	Re: Henry's Bizarro threads! If you ever had a classic British motorcycle you did the British Standard Whitworth Thread dance.

07-28-2017, 05:18 PM	#24
Terry, NJ Senior Member Join Date: May 2010 Location: Bucks Co, Pa Posts: 3,740	Re: Henry's Bizarro threads! Just to be sure no one makes any mistakes about this subject, I'm going to list some of the lesser known thread sizes. Both fractional and the numerical systems. 0 X 80, 1 X 72 & 80, 2 X 56 and I will skip over some, 3 X 48, 4 X 36 & 40 , 5 X 40, Here's one you weren't expecting 7 X 32 and 9 X 32, 10 X 32, 24, 28, 30, Then the 12s in24, 28 & 32, And the ever popular 14 X 20 & 24 (major Dia .242) And the small fract. sizes by 1/64 th to 15/64 X24 . 15/64 is .235 , #14 is .242 and of course 1/4 is .250. So you see, the magical world of threads is a deep bottomless pit. I got go eat now, but you see what I mean. Terry

07-28-2017, 05:47 PM	#25
clo2jim Senior Member Join Date: May 2010 Location: Northern Ontario, Canada Posts: 175	Re: Henry's Bizarro threads! Tinbasher - #14 Dixie Upholsteries Inc in Kitchener, Ontario has 12-24 Robertson Head Countersunk head bolts for the Floorboard. I got some from him at the Fall Barrie Auto Flea Market Website is www.dixies.ca Address: 92 Harber Ave, Kitchener, ON N2C 1Z2 Phone: (519) 748-1648 Province: Ontario Jim

07-28-2017, 05:53 PM	#26
Tinbasher Senior Member Join Date: May 2010 Location: Innisfil, Ontario Canada Posts: 1,174	Re: Henry's Bizarro threads! Sponsored Links (Register now to hide all advertisements) Thanks Jim I'll give them a call. John P.