Cal Tech Precision, Inc. maintains a Quality Management System (QMS) that is designed to meet and/or exceed the aerospace industry requirements as related to the production of machined parts and assemblies.

Below are some of the many of the customer approvals held by Cal Tech Precision, Inc.

AEROSPACE DYNAMICS INTERNATIONAL (THE MARVIN GROUP)
ALLIED SIGNAL - HARCO
ALUMINUM PRECISION PRODUCTS
ARCTURUS MANUFACTURING
AVIATION MATERIALS MANAGEMENT (AV-MAT)
B/E AEROSPACE SERVICES GROUP
BOEING COMMERCIAL AIRCRAFT
BOEING HELICOPTER
CDS LEOPOLD (CDS GROUP)
CENTRA INDUSTRIES INCORPORATED
COMMERCE OVERSEAS
CONTOUR AEROSPACE DIVISION (THE AEROSTRUCTURES CORPORATION)
CYRIL BATH
DB DESIGN GROUP INCORPORATED
FAIRCHILD AEROSTRUCTURES COMPANY
CHEMTRONICS INCORPORATED (GKN AEROSPACE)
GENERAL ELECTRIC
GOODMAN BALL INCORPORATED
GOODRICH
HAWKER de HAVILLAND INCORPORATED (TENIX GROUP)
HYDRO-MILL COMPANY (TRIUMPH GROUP)
KIRKHILL AIRCRAFT PARTS COMPANY (KAPCO)
KOREAN AIR AEROSPACE DIVISION
LOCKHEED MARTIN
MANEY AIRCRAFT INCORPORATED
NORTHROP GRUMMAN
PRAXAIR SURFACE TECHNOLOGIES
RALEE ENGINEERING COMPANY (TRIUMPH GROUP)
RAYTHEON COMPANY (MISSILE & DEFENSE SYSTEMS)
RTI FABRICATION (RTI INTERNATIONAL METALS COMPANY)
SHINMAYWA
SHULTZ STEEL COMPANY
SPIRIT AEROSYSTEMS
SYSTEM TECHNICAL SUPPORT CORPORATION
THE BOEING COMPANY
TRW AERONAUTICAL SYSTEMS
WEBER METALS INCORPORATED