Aircraft Fastener Specs: AN3
Aircraft-grade fastener specifications and structural allowables — AN series airframe bolts (AN3-AN12), MS20470 solid rivets (2117-T4 AD and 2024-T4 DD), Hi-Lok pins (HL10 titanium protruding shear, HL19 steel flush), Lockbolt HLB, and NAS1801 hex machine screws. Single-shear allowable loads per MIL-HDBK-5J/MMPDS-11 Chapter 8.
| fastener type | diameter in | Ftu ksi (ksi) | grip range in | head style | hole size nom in (in) | material | notes | shear allowable lbs (lbs) | tensile allowable lbs (lbs) | thread | torque max inlb (in-lb) | torque min inlb (in-lb) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AN3 | 0.19 | 125 | 0.156-0.750 | Hex | 0.191 | 4130/8740 Alloy Steel | Airframe bolt; aluminum alloy version Ftu=55ksi tensile=1100 lbs | 1,540 | 2,210 | 10-32 UNF-3A | 25 | 20 |
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