Quality Control

Hirsh has a long history of supporting the industrial, automotive, aerospace, medical device, biotechnology, and scientific instrument sectors. 

General tolerances on metals can be held to +/- 0.005" (+/- 0.127 mm) in accordance with ISO 2768 unless otherwise specified. Plastics and composites can be +/- 0.010”.

Hirsh can also machine and inspect to tight tolerances, including sub +/- 0.001" tolerances, per your drawing specifications and GD&T callouts.

Yes, in fact, it’s our team’s preference that we support your part’s production with DFM before moving into production.

Our DFM is most effective when it’s requested before a design is finalized. We can still provide design optimization feedback even after a design has been finalized, though. Contact our team as early in the manufacturing process as possible to achieve the biggest time and cost savings.

Easy! Just submit an RFQ through our website. 

We accept STEP, STP, SLDPRT, IGS, X_T, PDF, JPG, and PNG file formats.

For the fastest turnaround time on quotes, please include both a CAD model and a detailed, reviewed technical drawing for each part that you want quoted. This enables our team to build a comprehensive quote and move into production as quickly as possible.

Milling: 3-, 4- and 5-axis CNC milling options for your most complex and intricate components

Turning: Swiss and multi-turret turning centers with live tooling and barfeeders to support lights-out production.

Flexible Manufacturing Solutions: two Fastems systems, seven 5-axis mills and over 100 pallets to support production in the 100s and 1000s; reduced setups and shorter cycle times improve quality and cut down on costs.

Here is a comprehensive list of our CNC machines.

We work with a wide variety of metal and plastic materials, including medical-grade plastics.

Explore the Material Index to learn more about the types of metals and plastics we machine.

Hirsh offers a range of surface finishing methods, both in-house and through our supplier network. These finishing options are designed to improve your part’s durability, finish, and aesthetic appearance.

Here is a full list of our surface finishing options for CNC machined parts.

Yes, we offer both mechanical and electro-mechanical assembly services.

Hirsh Precision is ISO 13485 and AS9100 certified, and our QMS is compliant with ITAR, EU REACH, EU RoHS, and EU CMRT.

Our approved manufacturing partners also adhere to a variety of industry standards, including: ISO 9001, ISO 13485, ISO 14001, AS9100, IATF 16949, and NADCAP.

Learn more about Hirsh’s approach to quality.

We offer several different inspection options, including a standard FAIR, a certified inspection report (CIR), AS9102C FAIR, APQP, PPAP, and SPC.

You can read more on our Quality page.

Hirsh maintains a wide range of inspection technology and equipment, including many CMMs, multiple styles of visual inspection systems, in-house calibration for hand tools and gages, and “Z” class gage pins at every machining center.