Author Topic: Which screws do I need?  (Read 1399 times)

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Offline Domas

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Which screws do I need?
« on: 28 Sep 2022 at 18:15 »
Which screws do I need? (see picture)Motorcycle is a 2 3/4 HP.
« Last Edit: 28 Sep 2022 at 18:46 by Domas »

Offline Jim

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Re: Which screws do I need?
« Reply #1 on: 04 Oct 2022 at 02:55 »
Hello Domas,
the upper screw is Douglas` own thread which is 25 tpi by 9/32 diameter and the lower is bsf 20 tpi by 3/8 a shouldered bolt to take the rear stand regards Jim

Offline Jim

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Re: Which screws do I need?
« Reply #2 on: 04 Oct 2022 at 03:00 »
hello again I got it wrong that top one should be 17/64

Offline Domas

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Re: Which screws do I need?
« Reply #3 on: 11 Oct 2022 at 12:07 »
Many Thanks.  You have helped me a lot!

Offline Domas

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Re: Which screws do I need?
« Reply #4 on: 16 Oct 2022 at 15:46 »
Hi Jim, what is 17/64? No thread! Wrench size?
« Last Edit: 16 Oct 2022 at 15:56 by Domas »

Offline Jim

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Re: Which screws do I need?
« Reply #5 on: 17 Oct 2022 at 02:20 »
Hello Domas,  17/64 by 25 tpi is a Douglas thread, head size is 7/16, regards Jim

Offline Domas

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Re: Which screws do I need?
« Reply #6 on: 17 Oct 2022 at 17:19 »
Thank you.
Which thread is closest to 17/64" to recut?

Offline cardan

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Re: Which screws do I need?
« Reply #7 on: 18 Oct 2022 at 00:57 »
Pity to lose the Douglas mystique: https://www.douglasmotorcycles.net/index.php?topic=1102.0

But if you must:
17/64-25 is 0.266"-25tpi
M7-1mm pitch is 0.276"-25.4tpi

Leon

Offline Domas

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Re: Which screws do I need?
« Reply #8 on: 18 Oct 2022 at 08:39 »
I also use 2 screws. who has some for me?