This set is designed one size under bore and hardened C1144 steel for long life. The drill lube is to ensure smooth minimal friction between the drill bit and the guide, cooling the bit, keeping it from galling, which aids in longer drill and guide life. Dip drill bit in lubricant at least once for every rivet.
The guides are easy to use. First select the appropriate guide for the rivet being drilled.
Use #31 drill bit and guide for 1/8 inch diameter rivets.
Use #21 drill bit and guide for 5/32 inch diameter rivets.
Use #13 drill bit and guide for 3/16 inch diameter rivets.
Use Letter "D" (.246) drill bit and guide for 1/4 inch diameter rivets.
The guides allow you to drill straight and center every time. They are compact, easy to grip and easy to spot if dropped. They were designed to eliminate double drilled holes and drill bits "skating" off of rivets.
Just what the Dr ordered
Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.
This product is Made in the USA.