The U.S. aircraft register, updated daily
Parts

Nut Hex

No failure report names the nut hex. 28 FAA approvals let 10 companies make a replacement nut hex, Ontic Engineering & Manufacturing INC holding the most (16).

Approved replacement parts 28 parts manufacturer approvals

A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a nut hex and sell it as an approved part for the models named. These are the companies holding such approvals for a nut hex:

Ontic Engineering & Manufacturing INC 16Turbo Technologies LLC 2Superior Air Parts INC 2Alcoa Fastening Systems 2Wencor LLC 1Pacific Sky Supply INC 1Kaynar 1Howmet Global Fastening Systems INC 1Boeing Distribution, INC. 1Arconic Fastening Systems & Rings 1

For these models most: Beechcraft A100 (6), Beechcraft 65 (6), Beechcraft E-90 King Air E90 (4), Beechcraft C90 King Air C90 (4), Mitsubishi MU-2 (3), Beechcraft B100 (3), Piper PA-42 (2), Learjet 25 (2), Learjet 24 (2), Learjet 23 (2), Scottish Aviation SERIES 100 (1), Piper PA-31 Navajo and Chieftain (1).

MakerPartReplacesFitsGrantedStatus
Boeing Distribution, INC.Nut: Hex HD, Plain AV39003173900317-01The Boeing Company 747-400 Series, 747-8 Series2024-04-12current
Howmet Global Fastening Systems INCNut – Hex PH50481-6General Electric P/N 9195M80P03General Electric Company CF6-45A, CF6-45A2, CF6-50A2020-04-24current
Arconic Fastening Systems & RingsNut Hex Locking Insert, Assy PH39502-5General Electric P/N 9644M72P03GE Engine CF6-6D, -6K, -45A2016-10-31current
Superior Air Parts INCNut-Hex SL383BP/N 383-B, P/N STD-38Lycoming Engines O-235-C, -C1, -C1A2015-10-13current
Wencor LLCNut-Hex 974699-9WE974699-9Airbus A330-200 Series, Models ...2013-09-04current
Ontic Engineering & Manufacturing INCNut-Hex 219270Modification PartDassault Aviation Fan Jet Falcon Series C, D, E2007-05-14current
Ontic Engineering & Manufacturing INCNut .375-24 Hex Jam 1133-877Modification PartMitsubishi MU-2B-10, MU-2B-15, MU-2B-202007-05-14current
Ontic Engineering & Manufacturing INCNut-Hex 219270Modification PartLearjet 23, 24, 24B2007-05-14current
Ontic Engineering & Manufacturing INCNut-Hex. 219270Modification PartSabreliner NA-265-40, NA-265-60, NA-265-702007-05-14current
Ontic Engineering & Manufacturing INCNut-Hex 219270Modification PartRaytheon 65-90, 65-A90, B902007-05-14current
Ontic Engineering & Manufacturing INCNut-Hex 219270Modification PartIsrael 1121, 1121A, 1121B2007-05-14current
Ontic Engineering & Manufacturing INCNut-.375-24 Hex Jam 1133-877Modification PartPiper PA-422007-05-14current
Ontic Engineering & Manufacturing INCNut-Hex 219270Modification PartIsrael 1121, 1121A, 1121B2006-08-14current
Ontic Engineering & Manufacturing INCNut-Hex. 219270Modification PartSabreliner NA-265-40, NA-265-60, NA-265-702006-08-13current
Ontic Engineering & Manufacturing INCNut-Hex 219270Modification PartDassault Aviation Fan Jet Falcon Series C, D, E2006-08-10current
Ontic Engineering & Manufacturing INCNut-Hex 219270Modification PartLearjet 23, 24, 24B2006-08-09current
Ontic Engineering & Manufacturing INCNut-.375-24 Hex Jam 1133-877Modification PartPiper PA-422006-05-15current
Ontic Engineering & Manufacturing INCNut .375-24 Hex Jam 1133-877Modification PartMitsubishi MU-2B-10, MU-2B-15, MU-2B-202006-03-13current
Ontic Engineering & Manufacturing INCNut-Hex 219270Modification PartRaytheon 65-90, 65-A90, B902006-03-13current
Ontic Engineering & Manufacturing INCNut-Hex 219270Modification PartRaytheon 65-90, 65-A90, B902006-01-30current
Ontic Engineering & Manufacturing INCNut .375-24 Hex Jam 1133-877Modification PartPiper PA-31T, 65, A652006-01-30current
Turbo Technologies LLCNUT-HEX 5/16-24 SPL T68231256823125Rolls-Royce 501-D13, -D22, -D22A2002-09-05current
Turbo Technologies LLCNUT-HEX HEAD DRLD, 1/4-28 THD T68233066823306Rolls-Royce 501-D13, -D22, -D22A2002-09-05current
Alcoa Fastening SystemsNut-Hex PH50481-6General Electric 9195M80P03General Electric CF6-45A, 45A2, 50A2000-09-10current
Alcoa Fastening SystemsNut-Hex PH29462-6General Electric 9629M48P06General Electric CF6-6, CF6-50, CF6-80A2000-08-21current
KaynarNut-Hex PH50481-6General Electric 9195M80P03General Electric CF6-45A, 45A2, 50A1999-07-11current
Pacific Sky Supply INCNut-Hex 5/16-24 SPL 6823125PAllison 6823125Allison Engine 501-D13, D13A, D13D1993-12-08current
Superior Air Parts INCNut-Hex SL-12186Avco-Lycoming P/N 12186Avco Lycoming,... 0-235, 0-290, 0-3201984-05-23current

Sources: the FAA's service difficulty reports since 1995 (a report is a part that failed and was fixed, as filed by an airline, repair station or owner; the count shows reporting as much as reliability) and the parts manufacturer approvals in the FAA's Dynamic Regulatory System. The part name is the reporters' and the approval holders' own words, reduced to the first plain words so that spellings meet.