The 2023 edition of Nonelectronic Parts Reliability Data (NPRD) is available for purchase!

Nonelectronic Parts Reliability Data (NPRD) presents field failure rate data on a wide variety of mechanical and electromechanical parts and assemblies. The parts cover ground, airborne and naval environments. NPRD-2023 includes reliability failure rate data for nearly 250,000 total parts. 

Get NPRD-2023 through the Reliability Online Automated Databook System (ROADS) web app!

When you subscribe to ROADS, you will receive instant access to NPRD-2023, as well as NPRD-2016, NPRD-2011, EPRD-2014, FMD-2016, and FMD-2013.

How NPRD Is Used

Engineers around the world use Nonelectronic Parts Reliability Data (NPRD) to:

  • Perform reliability analyses including:
    • Mean Time Between Failure (MTBF),
    • Fault Tree Analysis (FTA),
    • Safety analyses,
    • And more.
  • Improve product and system reliability,
  • Build reliability into new designs,
  • Produce software for calculating reliability (ask about incorporating our data!),
  • And more!

Engineers worldwide have been using the NPRD series for decades.

How to Access NPRD-2023

It’s as easy as 1-2-3!

  1. Purchase a ROADS subscription. The Reliability Online Automated Databook System (ROADS) is a searchable web app that provides access to NPRD. It costs $500 per user for one year.
  2. Instantly receive an email with your login details.
  3. Get instant access to NPRD-2023.

That’s it! No installation required!

The steps are so easy that you don’t have to involve your IT department, and Quanterion Solutions is happy to help if you have questions.

What Is the ROADS Web App for Accessing NPRD?

You will view the NPRD databooks through Quanterion Solutions’ newly updated Reliability Online Automated Databook System (ROADS), which is easily searchable and accessible directly in your web browser. No installation is required.

ROADS provides efficient search and retrieval of all information contained in NPRD. This interactive online tool can be accessed anywhere with an Internet connection.


ROADS subscribers will instantly gain access to NPRD-2023. 

The ROADS web app includes Quanterion Solutions’ popular databooks:

         ✓ Nonelectronic Parts Reliability Data (NPRD), including the new NPRD-2023

         ✓ Failure Mode / Mechanism Distributions (FMD)

         ✓ Electronic Parts Reliability Data (EPRD)

ROADS subscriptions are set to auto-renew for your convenience, and you can cancel the renewal during your purchase or anytime.

Subscribe to NPRD-2023 through ROADS today!


Testimonial From a Current ROADS Subscriber

“It is easy to access online from my computer even if I am working from home. The Search has drop-downs to suggest nouns for items to help determine a good description of exactly the item I may be looking for. It also works by just starting to type a word which makes it pretty quick to find the item in a search.

“The failure modes listed for an item provide us with more confidence [when] we have considered all aspects of failure within our FMECA. Dates provided on the source help us determine if the data is relevant to our similar item, same for the Environment and quality fields.” -Gail F., Current ROADS Subscriber.


Sample Search

See below for an example of a failure rate search in ROADS for an accelerometer tool.


Buy NPRD-2023 through ROADS today!


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