The APR AN Bolt Length Gauge accurately shows the proper length of the AN Bolt required when original bolt lengths are unknown and helps to choose the proper length for new holes drilled during installations of modifications. The AN Bolt Lenght Gauge shows 5 lenghts for each of the 8 AN Bolts starting at 1/8" through 7 7/8" in increments of 1/8" (a total of 275 sizes)
To find the length of the AN Bolt rotate the top disc of the computer until the material thickness is shown in the top selector window. To the left of the window find the AN Bolt diameters (AN-3 bolt is 3/16", AN-4 is 4/16" diameter etc.) Select the bolt length in the window opposite the desired bolt diameter to be used.
The selector window shows the proper length when using two thick flat washers. If two thin or one thick flat washer is used, reduce the bolt length one size. If material thickness is in 1/16", 1/32" or 1/64" round to the nearest 1/8".
AN Bolts and proper installation are required by FAA regulations
DISCONTINUED ITEM--LIMITED STOCK AVAILABLE PLEASE CALL FOR QTY
The Frekote 770-NC synthetic mold release I ordered has a 6-month shelf life from the factory. The can I received on 8/25 was set to expire on 8/31 according to the date printed on the bottom of the can. I called and sent a photo of the can bottom and they said it should have been taken off the shelf a month earlier, so they will send me a good can when new stock arrives without sending the out of date can back.
I appreciate the fast delivery and them taking care of the issue, but it means you could be buying product that has only one month of shelf life remaining. Call before you buy and have them confirm the expiration date of their stock and if it is less than works for you, work out delivery from fresh stock or negotiate a discount.
