AndyCapp Posted February 28, 2017 Report Posted February 28, 2017 Hi All, Can someone let me know the size of the mounting bolts that protrude through the rubber engine mountings on a M20J. Thank you..
AndyCapp Posted February 28, 2017 Author Report Posted February 28, 2017 Hi Shadrach, Thank you for this. I am looking for the actual diameter ( mm or inches). Regards Andy
Bob_Belville Posted February 28, 2017 Report Posted February 28, 2017 5 minutes ago, AndyCapp said: Hi Shadrach, Thank you for this. I am looking for the actual diameter ( mm or inches). Regards Andy Shadrach gave you the spec: AN7-44A - Airframe Bolt 7/16-20, 7/16 X 4 1/2 (OAL), 3 15/16 (GRIP) Non Drilled Shank - Minimum tensile strength 125, 000 PSI. Cadmium II plated 1
Dale Logsdon Posted February 28, 2017 Report Posted February 28, 2017 An AN7 bolt is .437" max. to .433" min. dia.
MooneyBob Posted February 28, 2017 Report Posted February 28, 2017 I am just curious what is the torque for these bolts on J? I will be putting my engine back soon.
Shadrach Posted February 28, 2017 Report Posted February 28, 2017 55 minutes ago, AndyCapp said: Hi Shadrach, Thank you for this. I am looking for the actual diameter ( mm or inches). Regards Andy Andy, AN stands for Army/Navy standard and is not unique to any particular aircraft. The number listed is very specific set of specs. There is an alternative NAS (National Aerosoace Standards) spec bolt given as well. A quick google search of either bolt number will give you the specs.
AndyCapp Posted February 28, 2017 Author Report Posted February 28, 2017 Thank you all for the information and education Excuse my ignorance but here in South Africa things work a bit differently. Regards Andy
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