Part# AN7-44A
MFR Model# 19194-1
Dash No.Nominal


Hex head aircraft bolts are made of high-strength type 4037 or 8740 alloy steel (type 8740 is most commonly used). The bolts are centerless ground and threaded after heat treatment. Minimum tensile strength 125,000 PSI. Cadmium plated per specification QQ-P-416A, Type II, Class 3. Available with shank drilled for cotter pin or undrilled for stop nut application, and with or without drilled head for safety wire. Specify bolts to have undrilled shank by adding letter "A" after the dash number. For bolts with drilled head add letter "H" after the AN number. See illustrated examples. "C" represents Type 431 Stainless Steel (contains iron which is magnetic). The length of AN aircraft bolts is measured from under the head to the end of the shank. The "grip" is the unthreaded portion of the shank. See table for conversion of length and/or grip to proper AN callout.

Note: Drilled bolts listed above are drilled shank only. To order drilled head only or both drilled head and shank bolts, please use our AN Bolt Selector by clicking the link below.

Click here for the AN Bolt Selector
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Reference Chart

Reference Chart


Timothy L Verified Purchase


May 14, 2022

Lindsay A Verified Purchase


April 8, 2022

Cadmium bolts.... they work as theyre supposed to.

Jose G
February 5, 2021

You kept shipping costs down. Great!

John M
October 16, 2020


Jerry C
September 22, 2020

Cant beat real AN hardware. Very well packaged from Aircraft Spruce. I use these type bolts on race cars to eliminate failures, never lets me down.

Neil C
August 20, 2020

the only thing I would change is a faster shipping method .

Charles T
June 5, 2020

Ordered for rush job. Got the bolts I needed next day. Great service

Lawrence Q
October 11, 2019

Good service sales person suggested cheapest shipping, for timely arrival.

Thomas S
May 6, 2019

Always exact orders and very fast delivery. My go to Experimental parts place.

Wesley D
January 10, 2019


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.

Q: We are wanting to order AN7-43A bolts for mounting the engine in a Cessna 172. What size steel locking nuts do we need to order with these bolts?

AN7 bolts have 7/16-20 threads, so the nut would also have to have the same thread size. Please refer to the aircraft parts manual for the style of nut Cessna recommends for this application.

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