AN8-21 Airframe Bolt

Part Number: AN8-21

AN8-21 Airframe Bolt, Inventory: 52, Thread: 1/2-20, Grip Length: 2 7/32, Fastener Length: 1 7/16, Drilling Type: Drilled Shank, Surface Treatment: Cadmium Plated Steel.

For Inquiries Larger Than Stock Available, Please Call For Quote.

Quantity Break Pricing

In Stock


Grip Length

2 7/32

Fastener Length

1 7/16

Drilling Type

Drilled Shank

Surface Treatment

Cadmium Plated Steel

Inventory Note

Need additional stock? email at

AN8-21 Airframe Bolt

The AN8-21 Airframe Bolt 1/2-20 with a 1/2” shank diameter. All sizes of AN8 bolts have a 0.68 inch thread length, regardless of grip length. This thread length has been carefully calculated to accommodate a full-height nut plus one AN960-816 washer. The threaded end of the AN8-21 Airframe Bolt is tapered, to allow easier starting of the nut. The AN8-21 Airframe Bolt is tapered on the last threads, for ease of installation of the nut. The AN8-21 Airframe Bolt has a tensile strength of 125,000 psi and a shear strength of 76,000 psi. If the AN8 AN8-21 Airframe Bolt is overstressed, it will bend first rather than snapping.