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AN9 Airframe Bolt, 9/16-18 Thread

Click for a larger picture of AN9 Airframe Bolt, 9/16-18 Thread

AN9 bolts have a 9/16-18 thread with 0.9063 inch thread length (just long enough for an AN365 locknut and an AN960-916 flat washer, each sold separately). The Grip Length refers to the unthreaded portion of the shank. Add AN960-916 and AN960-916L flat washers (sold separately) to fine-tune the grip length to match the thickness of materials being bolted together. Torque AN9 bolts to 67-83 lb-ft with AN365 or AN310 full-height nuts. Torque them to 40-50 lb-ft with AN364 or MS21042 half-height nuts.

A or no A? AN bolts were originally designed to be used with a castle nut and cotter pin, so the base part number indicates a drilled shank. The addition of an "A" at the end (for example, AN9-37A) indicates an undrilled shank for use with a self-locking nut.

UHL: Under Head Length (also known as Full Shank Length or Overall Length not including bolt head)

AN bolt nomenclature can be confusing. Please take a look at our page on Identifying AN Bolt Sizes.

Enter desired order quantities below, then click the "Add selected quantities to cart" button.

Order Qty
Part No.
Desc.
Price
Status

AN9-20A

9/16-18 x 1.250 Grip Airframe Bolt, 2.16 UHL, undrilled

1 to 5: $18.49

6 & up: $16.81

In Stock

AN9-37A

9/16-18 x 3.125 Grip Airframe Bolt, 4.03 UHL, undrilled

1 to 5: $14.99

6 & up: $13.61

In Stock