7050E Rivet Heat Treatment
7050E Rivet Heat Treatment
(OP)
I have come upon some conflicting information on the E rivet. TO 1-1A-9 Aerospace Metals Manual pg.3-20 para f. states D/DD/E rivets can be kept refrigerated at -10 degrees
and must be driven within 30 minutes.
I was under the assumption that the E rivet did not require any special handling after they are initially heat treated.
Any information on the proper use and handling of E rivets would be appreciated.
Thanks, Rob
and must be driven within 30 minutes.
I was under the assumption that the E rivet did not require any special handling after they are initially heat treated.
Any information on the proper use and handling of E rivets would be appreciated.
Thanks, Rob





RE: 7050E Rivet Heat Treatment
The D & E rivets are not kept cold.
Normally, the E rivets will substitute for the DD rivet.
But it is a very hard rivet and is usually squeezed, not shot.
Consult the SRM for allowable DD rivet substitutions.
I don't know about the T.O., I'm commercial.
rerig.
RE: 7050E Rivet Heat Treatment
I'm working on a Gulfstream part and there SRM is extremely vague.
I'm hoping to find a general reference of acceptable fastener substitutions to put in the DER.
RE: 7050E Rivet Heat Treatment
Table 8.1.2(b) on page 8-13 gives the single shear strength of DD rivets as 41 ksi versus 43 ksi for E (aka KE) rivets.
Assuming you have no other concerns (temperature, corrosion, fatigue), that should suffice as a reference for static strength applicability.
SuperStress
RE: 7050E Rivet Heat Treatment
The other problem is supply of E rivets we could not get them, however DD are very common.
Denny