Looking for M3 x .5 (1.2mm) x 4mm screws with 100¦ slope on head

[ImpInTraining]

Hi all,

I've been looking for this particular screw type from a wide assortment of fastener providers, and quite a few offer the metric M3 x .5 x 4mm screw with 90º head, but I need 100º slope on the head. So far, I've been very unfortunate in my search. Does anyone know where I can find some of these special screws?

 

[unclesyd]

Try Maryland Metric.

What is the material and quanity?

 

[ImpInTraining]

Stainless steel would be nice, but I'm not going to be picky... so long as we can find the right screws. Quantity will be around 200.

 

[drawoh]

ImpInTraining,

100° and 82° flat head are inch standards. Metric screws are 90°.

If you can live with slotted screws, I am sure some machinist can fire up his CNC lathe for you. The slots may well the the most expensive feature of your screws. You can have any material you want, within reason.

JHG

 

[ImpInTraining]

I guess that is an option, thanks drawoh.

I've checked Maryland Metrics and they didn't have anything listed for metric 100-degree screws either, but I did send them an email.

 

[Occupant]

I did find 2 and 4mm flat head screws with 100° c'sink, but alas no 3mm.

 

[KENAT]

As drawoh says, 100° csk are not standard for metric fasteners. So, unless you find some place that does them as a drop in replacement for 4-40's or something (which you sometimes get)I doubt you'll have much luck.

Posting guidelines faq731-376

http://eng-tips.com/market.cfm?

(probably not aimed specifically at you)
What is Engineering anyway: faq1088-1484​

 

[unclesyd]

The screw you are looking for will come under either ANSI or SAE Metric Spec. for a metric FHMS with a 100° head
I've misplaced my reference.
I would call someone like the J I Morris company concerning your requirements.

http://www.jimorrisco.com/

 

[mfgenggear]

have them made at screw machine shop.
except order 500 pc's

 

[ImpInTraining]

Thanks everyone for your input. We might be better off just redrilling the holes to accomodate for the 90 degree slope, but it'll be a pain because it means disassembling a lot of units.

The rest of the screws in use on this component are 4/40s, and the 100-degree slope was because the metal is so thin we're worried that using 90-degree slopes might be ineffectual. However, we don't have much of a choice if we can't come up with some M3x4mm with 100-degree slopes.

Guess I'll take a gander and shoot some questions to J I Morris.

Thanks again.