cires23
New member
- Dec 28, 2011
- 1
Hi,
I need to install HST315 fastener in a hybrid joint. Per drawing the hole fit is Class II at composite skin (clearance) and Class IV (interference) in the metallic fitting.
If I need to install the 1st oversize at the joint, aircraft SRM does not stated the drilling fit, but to drill different diameter seems quite rare for maintainance. Per my understanding Class II for both strucures should be ok, not to force the composite. Could anyone help?
Thanks and regards,
BC
I need to install HST315 fastener in a hybrid joint. Per drawing the hole fit is Class II at composite skin (clearance) and Class IV (interference) in the metallic fitting.
If I need to install the 1st oversize at the joint, aircraft SRM does not stated the drilling fit, but to drill different diameter seems quite rare for maintainance. Per my understanding Class II for both strucures should be ok, not to force the composite. Could anyone help?
Thanks and regards,
BC