Our History

Hartwell Aviation Supply Company (HASCO) was founded by Sheldon and Clark Hartwell as a distributor organization for American Screw Co, American Chain and Cable, Littlefuse and Bussman Fuses.

Hartwell Manufacturing located in Los Angeles, CA was formed to manufacture aircraft cable terminals to support the war effort

Commercial air transport is making a strong comeback and Hartwell is instrumental in providing airline operators with quick latching solutions to minimize downtime

Hartwell latches becomes the standard in industry by offering a multitude of different latch design to satisfy the demanding requirements of these complex machines. Hartwell latches are present on nearly every Western aircraft

Hartwell business is growing and a new manufacturing facility is built in Rancho Cucamonga, CA in 1968. By 1974, the Los Angeles facility could no longer support the ever growing needs and the headquarters were moved to Placentia, CA

Hartwell designs the cockpit decompression latch to meet the need for increased cockpit security regulations.

Hartwell is acquired by the TransDigm Group along with sister companies Electromech, Tyee, and TAC

Hartwell participates in re-engine efforts for major aircraft manufacturers by providing lightweight and cost effective nacelle latches

Hartwell innovative design for a locking fan cowl latch is introduced to the market to minimize fan cowl departures and improve safety. Hartwell continues to focus on our core values as we look forward to new and exciting opportunities