Weld Nut Projection Height Engineering
Weld Nut Projection Height Engineering
(OP)
I need to find any engineering data relating to the height and size of weld projections on weld nuts. Specifically, the relationship between weld projection size/height and torque-off or push-out requirements. The OHIO WELD DATA GUIDE from The Ohio Nut and Bolt Company does not have this information.
RE: Weld Nut Projection Height Engineering
DaimlerChrysler Corporation Process Standard No: PS-1804, WELD NUTS - PROJECTION WELDING
I can probably give you some numbers if you provide some additional details:
What type of nut are you interested in using? hex vs. round, pilot vs. non-pilot, how many projections, etc.
RE: Weld Nut Projection Height Engineering
RE: Weld Nut Projection Height Engineering
Push-off strength
metal thickness from 0.76-1.27 mm : 3830 N
1.30-1.85 mm : 5960 N
1.88-2.44 mm : 8010 N
2.46-3.28 mm : 10320 N
> 3.30 mm : 12460 N
Torsional strength : 113 Nm
I hope this helps.
RE: Weld Nut Projection Height Engineering
RE: Weld Nut Projection Height Engineering
RE: Weld Nut Projection Height Engineering
Perhaps it is too late for changes, but I would recommend against the square four-projection nut. The main reason is that three points define a plane, so the fourth projection is routinely not touching the mating component, and therefore has a deficient weld. GM does not recommend using those anymore, instead they prefer the round, three-projection weld nuts. For the M8x1.25 size, the GM part numbers are 11517412 (plain) and 11517413 (with thread masking).