Why Certified?

Industry Experience

With over four generations of experience, our family-owned and operated business has provided exceptional service to Chicagoland and beyond since 1986.

Custom Solutions

From optimized inventory to custom labeling and kitting, we tailor our service to each customer’s individual needs.

Same-Day Shipping

Over 10,000 stock items can ship same-day, and we provide short lead times on most non-stock items.

Advanced Supply Chain

We partner with a large network of suppliers to offer an expansive line of products and services.

Products

Our 100,000+ SKUs make us more than a fastener supplier—we’re a partner in getting what you need.

Bolts & Cap Screws

  • Hex Cap Screws
  • Hex Machine Bolts
  • Heavy Hex (B7, A307)
  • Tap
  • Structural (A325, A490)

Sockets

  • Socket Cap Screws
  • Socket Set Screws
  • Socket Shoulder Screws

Nuts

  • Finished Hex Nuts
  • Heavy Hex Nuts
  • Structural Nuts (e.g., 2H, DH)
  • Nylon Insert Lock Nuts

Anchors

  • Hex Cap Screws
  • Hex Machine Bolts
  • Heavy Hex (B7, A307)
  • Tap

Washers

  • Standard Flat Washers (USS, SAE, etc.)
  • Nonstandard Flat Washers
  • Fender Washers

Rods & Studs

  • Threaded Rod
  • Unthreaded Rod
  • Studs
  • Key Stock

Screws

  • Machine Screws
  • Sheet Metal Screws (Type A, AB, B)
  • Self-Drilling (“Teks”) Screws

More

  • Flange Kits & Gaskets
  • Hose Clamps
  • Tamper-resistant fasteners
  • Collars, couplings, & retaining/snap rings

Products

Our 100,000+ SKUs make us more than a fastener supplier—we’re a partner in getting what you need.

Bolts & Cap Screws

  • Hex Cap Screws
  • Hex Machine Bolts
  • Heavy Hex (B7, A307)
  • Tap
  • Structural (A325, A490)

Sockets

  • Socket Cap Screws
  • Socket Set Screws
  • Socket Shoulder Screws

Nuts

  • Finished Hex Nuts
  • Heavy Hex Nuts
  • Structural Nuts (e.g., 2H, DH)
  • Nylon Insert Lock Nuts

Anchors

  • Hex Cap Screws
  • Hex Machine Bolts
  • Heavy Hex (B7, A307)
  • Tap

Washers

  • Standard Flat Washers (USS, SAE, etc.)
  • Nonstandard Flat Washers
  • Fender Washers

Rods & Studs

  • Threaded Rod
  • Unthreaded Rod
  • Studs
  • Key Stock

Screws

  • Machine Screws
  • Sheet Metal Screws (Type A, AB, B)
  • Self-Drilling (“Teks”) Screws

More

  • Flange Kits & Gaskets
  • Hose Clamps
  • Tamper-resistant fasteners
  • Collars, couplings, & retaining/snap rings

Strengthening Industries Globally

With a large network of trusted suppliers, we deliver top-quality parts at competitive prices to industries across the globe.

General Industrial

OEM & MRO

  • Metal fabrication
  • Lighting manufacturing
  • Security and fencing
  • Tool & die production

Material Handling

  • Industrial racking
  • Storage systems
  • Conveyor systems

Display / POP

  • Signs
  • Displays
  • Events staging

Home Products

  • Furniture hardware
  • Adhesives
  • Spray products

Construction

  • General
  • Cement/Concrete & Road
  • Scaffolding and safety
  • Drywall and lumber

Industrial Plumbing

  • Fluid management
  • Commercial & industrial plumbing
  • HVACR

Transportation

  • Rail
  • Buses
  • Trailers

Electrical

  • Residential, commercial, & industrial
  • Power switchgears, switchboards, and panelboards

Need solutions that last?

Ask the experts.

What Our Customers Say

With excellent customer service, the best prices and the ability to meet our strenuous deadlines Certified Fasteners & Industrial Supply remains a well valued vendor and partner to our steel fabricating company. We greatly value and appreciate all the ways they have helped our company grow over the past decade and would recommend them highly.

James S.

Purchasing Agent

Certified Fastener has been an exceptional partner for Thybar to work with. Their customer service is always friendly and proactive, and they go above and beyond to ensure we have exactly what we need to keep our projects on track. Their communication is top-notch, ensuring we’re always informed. Moreover, they consistently deliver materials promptly, making them a reliable and efficient choice for our needs. We couldn’t be more satisfied with their service and products.

Bridget C.

Purchasing Coordinator

Working with Certified Fasteners is always enjoyable. The team at Certified Fasteners is always fast, effective, efficient, knowledgeable, professional, and courteous. I truly enjoy working with them. The quality of their products combined with excellent service they provide makes them hard to compete with. Don’t just take my word for it; reach out to the Certified team and start your journey with them yourself. You will be very glad you did.

Kenyon R.

Purchasing/Materials Planning

CFI is an amazing team to work with. I can’t recommend them highly enough. They are true experts in their field. I’ve had a few specific parts that I wasn’t able to find elsewhere and they are always able to provide a solution. They make ordering easy and work hard to accommodate any requests. Their combination of great customer service, extensive knowledge, and timely shipping makes them standout from other suppliers.

Anna M.

Buyer

I have been working with Certified for over five years, and they’ve been an indispensable supplier for my business. They’ve provided me with top-quality stainless hardware components, and their team has gone above and beyond by helping me design and manufacture custom pieces specific to my industry needs.

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Working with the Lang family has been an absolute pleasure. Their service is prompt and professional. I always feel like a valued partner rather than just a customer. Certified’s products are priced fairly, and the quality is consistently great. Most importantly, they are genuine, trustworthy people that care about me and my business’s success.

I can’t recommend Certified highly enough!

Paul W.

Owner

CFI is reliable, knowledgeable, and competitive in all things hardware. The company as a whole proves time and time again how dedicated they are to their customers and every employee I have worked with so far has gone above and beyond my expectations! They are truly wonderful!

Lauren G.

Buyer

Working with Certified Fasteners & Industrial Supplies has been enjoyable. They are very quick to respond when I have questions and are helpful with suggestions when I’m looking for something. If they don’t stock it, they can get it – in a reasonable timely fashion.

Roxie P.

Purchasing Agent

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