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A family-owned fastener distributor delivering personalized service and high quality products. An award winning company since 1987.

We work together, across boundaries, to meet the need of our customers. Our market is expansive and diverse, yet we pride ourselves on personalized service to each of our accounts.

Our goal is to anticipate, understand and service your requirements. Our success is directly linked to yours.

Knapp supplies the global marketplace, serving Manufacturing, Distribution, Electronic, Construction & Aerospace markets. From small machine shops to Fortune 500 companies, you can rely on Knapp.

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Featured Products

Hex Washer Serrated Flange Screw 
Grade 5 Steel Zinc Plated

Thread Diameter 6-32 thru to 5/8-11

View Our

Sizing Chart

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Product Highlights ​
 

• Serrations bite into surfaces and never let go

• Time saved during installation 

• Zinc plating inhibits rust 

• The flange increases contact area to give you extra holding
  power without a separate washer

• Serrated washer face ensures locking action when the fastener's
  tightened so a separate washer is not required

Why choose a Serrated Flange Screw? 
 

Serrated Flange Screws can provide cost saving during the installation process by using only one fastener to lock your product into place. With an increased contact area and strong holding power, there's no need for a separate washer.

The serrations located under the head, lock onto the surface once tightened, ensuring that the material being clamped to provides excellent resistance to loosening caused by vibration. 

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77 SIZES IN STOCK

READY TO SHIP TODAY