A quick tour of McMaster-Carr turns up the following prices for socket cap screws. From this it looks like the difference in price for small quantities isn't very large. Note that the metric 316 CRES fasteners are cheaper than "standard!" I didn't check any other styles or sizes.

M3x0.5 12 mm
316 CRES $5.30 for 50
18-8 stainless $6.73 per 100 class 12.9 $4.05 for 100


#4-40 1/2"
   316 CRES $8.42 per 50
   8-18 stainless $3.97 per 100
   A286  $1.09 each

My line of work is the opposite of yours - very expensive fasteners in small quantities. For us, a few cents one way or the other is irrelevant.

John

Euric wrote:

The company I work for uses a variety of fasteners.  Both inch and metric
series.  Every so often someone asks why we use both and can't use just
"standard".  We use both because some of our outside purchased assemblies
mount using metric fasteners.  Some of these fasteners we buy, others some
with the assemblies.

I would love to see the mess end and have us use only metric fasteners.  But
there is one big problem:  They are much more expensive.  Not just a little
bit, but a lot.  Sometimes 10 times more.  I was looking to see what we pay
for a "basket" of both inch and metric fasteners and was shocked at how much
more they cost.  Whereas inch fasteners may cost 1~2 cents a piece, metric
fasteners can be about 8~10 cents for the equivalent.

I checked internet sources and saw what we are paying is somewhat of an
average, even though some companies sell for a few cents less.  Yet, I have
not seen one of the fasteners we buy in the same price range as the inch
ones.

Does anyone here also use metric fasteners in their work?  How do they
justify the high cost?  With the high cost of metric fasteners, what is the
incentive for any American company to convert?  If the costs were at least
comparable, metric could have a chance.  But with metric much more
expensive, there is no chance.

Even when speaking with vendors, just the mention of the millimetre even as
vaguely as saying "I need to shorten this length by about a millimetre",
results in a lecture on how metric will double the cost.

So, has anyone else ever experienced this and if so, how does one handle it?







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