Dimensionally should a class 3A screw always work with a class 2B nut if they are both made out of steel? If you use anti-seize, should it work if they are both stainless steel?
If we disregard galvanic corrosion, is it OK to screw a #8-32 a low strength steel screw into 3/16" thick aluminum sheet? I seem to remember that it is not generally recommended because the aluminum like 5052-H32 is not as hard as a steel screw and that is why we use helicoils. But what about...
Situation #1: I have two powder coated steel plates that will be attached with #8-32 screws. There are clearance holes in one plate and threads in the other plate. They will be installed indoors at room temperature in Florida. I am concerned with the high concentration of salt in the moist...
I am working on a very old assembly that has a stainless steel fasteners. I will be working on the equipment and then will be putting in new stainless steel screws and nuts. The notes on the old assembly drawing specified "Apply anti-seize compound GA-9289, Type 2, to threads". I need to work...
I have a stainless steel compression fitting that has a working pressure of 6000 psig. The manufacturer' rep does not know what the relationship is between working pressure and burst pressure. I do not have time for him to research it. Does anyone know what the burst pressure would be? I...
We are thinking of having de-ionized water running through (1/2 inch tube OD) brass compression fittings. The brass is alloy 360 and as such has a zinc content of about 40%. I have heard that if the zinc content in the brass is about 15% or higher, that it has a tendency to leach out of the...
What is the best plating for going over a brass part? This is an old part that was originally cadmium plated. We can no longer use cad plating so I need to find a different type of plating. I was wondering if zinc plating would work? Or would electroless nickel plating work? There are...
On page 191 B.3 it states for the Floating Fastener Case that "Any number of parts with different hole sizes and positional tolerances may be mated, provided the formula H=F+T or T=H-F is applied to each part individually." When it says "......different hole sizes and positional...
Does anyone know what the real inside corner fillet radius is for a W8X35 wide flange beam?
I need to put some holes in the beam for bolts, washers and nuts, but do not want the washers to touch the radius.
Has anyone used Nitronic 60 CRES keylock threaded inserts? If so, did you use them with stainless steel screws? Did you have any problems with galling? I was planning on using them with both #6-32 and #8-32 stainless steel screws. The screws would need to be removed and replaced about once...
How much torque can an average man develop when tightening a #6-32 nut, using just his thumb and first finger? The nut is 5/16" hex and 1/2" tall. It is a coupling nut. I am using a tall coupling nut instead of regular height nut, so I can get more torque on it. I may also use a hex thumb...
I have a rectangular part which has two holes which are to be located symmetrically about the center line of the part. What is the correct way to dimension the hole locations? Should I show the center line, identify it as CL and have a dimension going from the edge of the part to the center...
We are replacing an old water system with new hoses and fittings. Everything is the same except the orifice on the end of the hose going into the heat exchanger is smaller in diameter than the old legacy equipments was. How will this affect the gallons per minute flow rate of the water going...
I was going to use a zinc electrodeposited pretreatment per ASTM B633 including a clear chromate, on an electronic chassis that will be powder coated. Some of the flanges on the chassis will not be powdercoated to maintain electrical conductivity between them. The fabricator suggested that we...
When calling out the depth of a hole, or counterbore that has a flat bottom and a small fillet radius at the bottom of the hole, does the depth refer to the full diameter or to the very flat bottom of the hole? ASME Y14.5-2009 seems to picture it on page 17, Fig. 1-38, but it is not clear as to...
