Slotted or Phillips ... ?

[Fifinella]

When sitting around the hangar there is always a topic that will come up for discussion on what type of screws were used on J3's and or L-4's, slotted or Phillips heads. Although this does not answer the question, I did find this interesting on the evolution on screws that were around at the time the J3's and L-4's were built ....

Enjoy.

Robertson, Phillips, and the History of the Screwdriver
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[bob turner]

 

[nrpetersen]

 

[AOP]

 

[AOP]

 

[AKJurnee]

 

[bob turner]

 

[nrpetersen]

 

[bob turner]