Removeable fastener recess insert and method for making same
A fastening system includes a fastener having a head portion and a shaft portion, wherein the head portion has a recess (e.g., a removal tool recess), and an insert (e.g., a plastic insert) having an insert shape substantially equal to the recess shape and an insert thickness substantially equal to or less than the recess depth, wherein the insert is configured to removeably seat within the recess of the head portion. In this way, the insert may be later removed from the recess, allowing easy tool access even in applications where an overlying fairing material or other such conformal coating is used.
1. A fastening system comprising:
an aircraft fastener having a head portion and a shaft portion extending therefrom, the head portion having a driver recess formed therein, the recess having a recess shape and a recess depth; and
a pre-made insert consisting of a substantially elastic body having the same shape and depth as the recess prior to being seated in the recess, the insert completely filling the recess of the head portion such that an interference fit forms between the insert and the recess when the insert is seated within the recess.
2. The fastening system of claim 1 , wherein the insert comprises a plastic material.
3. The fastening system of claim 2 , wherein the insert comprises nylon.
4. The fastening system of claim 1 , wherein the insert conforms to an outer shape of the head portion of the fastener when seated within the head portion.
5. The fastening system of claim 4 , wherein the head portion is substantially planar, and wherein the insert, when seated within the recess, is substantially flush with the head portion of the fastener.
6. The fastening system of claim 1 , wherein the insert shape has rotational symmetry.
7. A method of using the fastening system of claim 1 , comprising automatically inserting the insert in the recess of the head portion.
8. A method of using the fastening system of claim 1 , comprising using a gun-like tool with a magazine to dispense the insert in the recess of the head portion.
9. An apparatus comprising:
aircraft skin;
a fastener configured to attach to the skin, the fastener including a head portion having a non-cylindrical driver recess;
a pre-made insert within the recess, the pre-made insert consisting of a body having substantially the same outline shape and depth as the recess, the insert seated within the recess such that an interference fit forms between the insert and the recess, the insert completely filling the recess, the insert not being adhered to the head portion; and
aircraft fairing material over the skin, fastener and insert to form a relatively smooth moldline surface;
whereby the insert can be removed from the recess, leaving a relatively clean recess.
10. The apparatus of claim 9 , wherein the body is substantially elastic.
11. The apparatus of claim 9 , wherein the insert comprises a plastic material.
12. The apparatus of claim 9 , wherein the insert comprises nylon.
13. The apparatus of claim 9 , wherein the insert conforms to an outer shape of the head portion of the fastener when seated within the head portion.
14. The apparatus of claim 13 , wherein the head portion is substantially planar, and wherein the insert, when seated within the recess, is substantially flush with the head portion of the fastener.
15. The apparatus of claim 9 , wherein the insert shape has rotational symmetry.