Need help sourcing micro-size titanium screws

Anybody have a good source for tiny titanium screws? Would prefer to use off-the-shelf, but might need custom...

Specs needed:
Material: Grade 5 Ti
Thread: #00-90
Length: between .080-.125 (I'm flexible)
Head: as low as possible cheese or pan head
Drive: Torx T2

If available off the shelf, I'm willing to go metric... M1.2 with length between 2.5-3mm.

I have immediate need for qty 4,000 pcs - would be willing to order larger lot if the price is right...

Any vendor suggestions welcome.

Thanks!

Contact the company that makes this screw: Titanium Machine Screw, Plain Finish, Binding Head, Slotted Drive, 1/8" Length, #-9 Threads (Pack of 1): Amazon.com: Industrial & Scientific and see if they'll make it from Gr5 in the Torx drive you want.

The amazon part milland refers to is a screw machine part--not headed.
Torx drive is headed product, IOW, you're looking for a special 'special', custom ordered.

OP's mention of head height as low as possible, raises a flag:

Calculating the tensile stress area (cone shaped from torx recess bottom 'A'-major lobe dia. to
the under head radius) is a must-do item for internal torx recess parts, to ensure head torque/tensile/fatigue strength.
Calc's. done at Min. Material Condition.
One can play off torx drive size/depth vs. head height tolerances--to an extent; to create reliable parts.
The above applies to phillips/hex/spline, etc. internal drives-this is not exclusive to Torx.
The cone area needs to be greater than the thread tensile stress area or the unthreaded grip dia. area
by a factor of 1.2.

Bona-fide Torx licensees should have appropriate data to do so or can readily obtain from the Torx licensor.
Knock-off artists don't.....and don't care...even if the heads pop off.

[In a past life, I did torx product design for Camcar-Textron--the originator of the Torx drive.]

Talk to Kelly at lunsford racing he may be able to help. He makes basically only small titanium parts in large quantities.

dave powelson said:

The amazon part milland refers to is a screw machine part--not headed.
Torx drive is headed product, IOW, you're looking for a special 'special', custom ordered.

Click to expand...

You bring up helpful points, thanks. I would add that the part can be made on a screw machine (or Swiss) with the Torx drive cut using a rotary broach, as long as the depth/strength factors you brought up work. Not sure about costs for relatively small quantities on whether it's better to do these as a headed part or machined, that's worth getting some quotes in to find out. Either way, I'd expect it won't be super-cheap.

OP, let us know what you find out for pricing with whatever process you decide on.

dave powelson said:

OP's mention of head height as low as possible, raises a flag:

Calculating the tensile stress area (cone shaped from torx recess bottom 'A'-major lobe dia. to
the under head radius) is a must-do item for internal torx recess parts, to ensure head torque/tensile/fatigue strength.
Calc's. done at Min. Material Condition.
One can play off torx drive size/depth vs. head height tolerances--to an extent; to create reliable parts.
The above applies to phillips/hex/spline, etc. internal drives-this is not exclusive to Torx.
The cone area needs to be greater than the thread tensile stress area or the unthreaded grip dia. area
by a factor of 1.2.

Bona-fide Torx licensees should have appropriate data to do so or can readily obtain from the Torx licensor.
Knock-off artists don't.....and don't care...even if the heads pop off.

[In a past life, I did torx product design for Camcar-Textron--the originator of the Torx drive.]

Click to expand...

I'm testing with Stainless Steel equivalent from McMaster... I can deal with the pan-head height as-is - but the application doesn't have a huge load, so I would be willing to take a slightly lower head even if it costs a little strength. I think being able to drive the fastener without striping out the Torx profile is going to be my biggest challenge to low head height.

Thanks all for your suggestions...

Talk to Buddy Johnson at Johnson Aerospace.

[email protected]

Johnson-aerospace.com

661-702-9949 ext. 122