Standards Chart

Benchmark Fasteners offers every type of standard fastener available in the industry. Please use the charts below to help identify the parts you require for easy reference.

We invite you to request a quote online or contact our team at 888-323-6501 or submit an inquiry to us via our web form.


Head Styles & Drives

Driving Recesses

driving recesses

Head Styles

head styles

Point Styles

Tapping & Metallic Drive Screws

point styles

Machine Screws

machine screws

Tamperproof Security Drives

tamperproof security devices

Thread Classes

National Coarse (NC)

  • 1 – 64
  • 2 – 56
  • 3 – 48
  • 4 – 40
  • 5 – 40
  • 6 – 32
  • 8 – 32
  • 10 – 24
  • 1/4 – 20
  • 5/16 – 18
  • 3/8 – 16
  • 7/16 – 14
  • 1/2 – 13
  • 9/16 – 12
  • 5/8 – 11
  • 3/4 – 10
  • 7/8 – 9
  • 1 – 8
  • 1 1/8 – 7
  • 1 1/4 – 7
  • 1 1/2 – 6
  • 1 3/4 – 5
  • 2 – 4.5

National Fine (NF)

  • 0 – 80
  • 1 – 72
  • 2 – 64
  • 3 – 56
  • 4 – 48
  • 5 – 44
  • 6 – 40
  • 8 – 36
  • 10 – 32
  • 1/4 – 28
  • 5/16 – 24
  • 3/8 – 24
  • 7/16 – 20
  • 1/2 – 20
  • 9/16 – 18
  • 5/8 – 18
  • 3/4 – 16
  • 7/8 – 14
  • 1 – 14
  • 1 1/8 – 12
  • 1 1/4 – 12
  • 1 1/2 – 12
  • 1 3/4 – 12
  • 2 – 12

Benchmark Fasteners, Inc. is a stocking distributor of standard fasteners in inch and metric sizes, available right off the shelf, for manufacturers throughout the United States.

Contact Us

Your supplier of standard fasteners and custom products for all applications.

Contact the experts with Benchmark Fasteners today for more information about our extensive range of quality products.

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