AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
Part #: HS4924-14D48
NSN: 5306011790901
Manufacturer: Honeywell
Part Family: Aviation
Part Type: Hardware
Functionality of Shear Bolts
Shear bolts are a special type of bolt, used in anti-theft applications and as a mechanical sacrificial part. Shear bolts are functionally similar to normal bolts, but with a special length of the bolt designed to snap off when fully tightened or in the case of extreme mechanical forces. Shear bolts are made from materials resistant to fatigue, so that they do not snap from gradual small forces. This includes various grades of steel and aluminum.
FSG: Bolt, Shear # HS4924-14D48 belongs to the Federal Supply Group 53: Hardware and Abrasives.
FSC: Bolt, Shear # HS4924-14D48 belongs to the Federal Supply Classification: Bolts.
Common Applications
Shear bolts are used in the aviation industry as a sacrificial mechanical part. They are purposefully designed to fail under specific conditions, such as a crash, to cause parts of the aircraft to break away. For example, shear bolts are used in the engine nacelles that connect engines to an aircraft’s wing so that if the aircraft crashes, the shear bolts will break and cause the engine to tear away from the aircraft, protecting the passengers and crew from an engine fire. Shear bolts are also used in security and anti-theft purposes, where their hexagonal head breaks away after being fully tightened, leaving behind a tamper-proof dome or cap head.
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