Aircraft Fastener Specs: HILOK_HL19_8
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 |
|---|---|---|---|---|---|---|---|---|---|---|
| HILOK_HL19_8 | 0.25 | 180 | 0.0625-1.000 | 100-deg Flush Shear | 0.251 | Alloy Steel H11 | H11 alloy steel Hi-Lok pin; 100 deg reduced flush head; Ftu=180 ksi | 8,970 | 8,800 | 1/4-28 UNF-3A |
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