Bill of Materials (BOM)

What Is an Engineering Bill of Materials (EBOM)?

By Team TranZact | Published on Sep 8, 2023

An engineering bill of materials (EBOM) lists all the ingredients a manufacturing plant requires for a project. It completes the recipe of the production line, and with it, correct product manufacturing is possible.

The list of raw materials is usually called the Bill of Materials or BOM, but when engineering goods are required, it is called EBOM. In this article, you will learn the importance of manufacturing and engineering bills of material in successful production and manufacturing operations that will help businesses.

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What Is an Engineering Bill of Materials?

EBOM is a document that contains all the components, parts, and materials necessary to build the product. It defines the amount and description of the product and how much quantity the company will generate. It includes all the details of the development and its production.

An engineering bill of material is the foundation for producing a product and provides all important data about the product's design and manufacturing stages. With detailed BOM, manufacturers can maintain accuracy and consistency throughout the process.

Engineering Bill of Materials Example

To understand EBOM better, have a look at this list of raw materials for a skateboard company.. This is an engineering bill of materials overview. It contains a list of all elements and the material in which it is required.

All these materials are essential to making skateboards, and all skateboard businesses use similar materials. It determines which part requires which material and in what quantity. Here is an engineering bill of materials template for a skateboard company:


  • Deck blank ( made of maple wood)
  • Grip tape
  • Trucks ( made up of aluminum)
  • Wheels (made up of urethane)
  • Bearings (made up of steel)


  • Aluminum Baseplate
  • Aluminum Hanger
  • Steel Kingpin
  • Bushings (made up of urethane)
  • Steel Washers
  • Steel Nuts


  • Wheel cores (made up of urethane)
  • Wheel covers (made up of urethane)


  • Steel Bearing shields
  • Steel Bearing balls
  • Steel Bearing races
  • Nylon Bearing retainers

Creating a Strong Engineering Bill of Materials

Creating and maintaining an accurate EBOM is a challenging task. This document can be made more easily by following the below steps.

1. Organize Data

EBOM must include all part numbers and descriptions exactly according to its design. The format is important for managing data related to the product, making sure all data is accurate and up-to-date.

2. Include all Feedback

With productdevelopment progress, EBOM includes all specifications and feedback and informs all stakeholders that they are involved with the production line.

3. Maintain Design Control

EBOM must include the most up-to-date version of the product and maintain the design according to the stakeholders. Businesses can deliver the updated product form with design control and up-to-date versions.

4. Maintain Components Standard

Maintaining the product standard across all the products produced in the manufacturing plant is better. This reduces challenges and optimizes the process.

5. Resolve Supply Chain Issues

Identifying and resolving all the issues that can act as potential supply chain risks is also important. It can include cost, lead times, and inventory availability to make products cost-friendly.

Accurate Engineering Bill of Materials Benefits

An organized and effective engineering bill of materials can make any business successful. The EBOM plays a key role in providing all relevant information in one place about the overall engineering process.

Here are a few reasons why EBOM plays an important role in manufacturing industries:

1. Reduces Error

With a detailed list of product specifications, EBOM reduces the chances of human errors and any confusion in the production process. It helps businesses to deliver a high-quality product by maintaining the standards and procedures necessary.

2. Provides Specification of Product

The BOM is the list with all specifications and details about the product, and it helps the business to picture how the product will look. It allows the manufacturer to carefully design a product as per the customer's demands.

3. Customizations

The list also makes it easier for manufacturers to design products unique to customer needs. It will help manufacturers reach more customers and increase their target audience.

4. Cost Efficient

The business can purchase the raw materials from suppliers at a much cheaper price if all supplies are bought in bulk. They must follow a specific path to manufacture products to save money.

Challenges of Managing an EBOM

The following is a list of challenges faced by businesses who use engineering BOM:

  • Keeping the EBOM up-to-date
  • Managing changes to product specifications
  • Maintain consistent and accurate EBOM
  • Manage detailed specifications data about the product
  • Linking other software with engineering bill of materials

Despite these challenges, an accurate engineering bill of material can make any product development process successful. With a clear understanding of all blockages in the procedure, the manufacturing team and engineers can work to minimize these. They also ensure an up-to-date and accurate production line that delivers high-quality products.

EBOM vs. MBOM: What's the Difference?

These are the points of difference between EBOM and MBOM:

  • EBOM (Engineering Bill of Materials) focuses on the engineering aspect of the product, like its components and specifications. MBOM, or manufacturing bill of materials, focuses on manufacturing aspects, including the working and requirements.

  • Engineers usually use EBOM to explain the product. Manufacturing teams use MBOM to build the product.

  • EBOM is created in the product development process. MBOM is made after the product design is finalized for production.

Both have different purposes, but businesses can succeed only when engineering and manufacturing teams work together to produce high-quality products. By understanding the differences between these two departments, businesses can find better solutions to resolve issues and maintain sync for better production rates.

How Software Manages Your Engineering Bill of Materials

Here is a list of benefits you can get by using engineering bill of materials software:

  • Managing inventory and checking all processes in one place
  • Creating and managing bills of materials for both manufacturing and engineering departments
  • Tracking production processes at every stage
  • Connecting all other management software with MBOM for better performance.
  • Better communication across departments

Improve your EBOM with TranZact

TranZact helps businesses improve their inventory management with accurate engineering bills of materials. It reduces costs and adds customer value with customization and detailed features in the product.

TranZact's inventory management software is the most suitable software for your business to create and manage the most accurate and cost-effective bill of materials that can deliver high-quality products on time.


1. What is an engineering drawing bill of materials?

An EBOM is a detailed list of all parts and components of the product, including the drawing and documents. It is the recipe to make a finished product using raw materials.

2. What is the engineering bill of materials Excel template?

When an EBOM is created using an Excel template, each update must be done manually. It includes all the products to make the final product in the assembly line.

3. What does MBOM stand for?

MBOM stands for manufacturing bills of materials. It is typically used in manufacturing to organize and manage products. It helps to produce the specific product.

4. What does BOM stand for?

BOM stands for bill of materials. It is a list of all the elements required to make the final product.

5. What do you mean by EBOM?

EBOM means the detailed list with all data required to make the final product. The product design is finalized with the help of an engineering bill of materials Excel template.

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