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Understanding the Difference: Security Bolts vs. Security Screws

When it comes to safeguarding assets, choosing the right type of fastener makes all the difference. While both bolts and screws serve the purpose of joining materials, their design and application in security-focused installations vary.

Security bolts typically require a nut and are designed for heavy-duty, tamper-resistant assemblies—ideal for situations where access to both sides of the installation is possible. Security screws, on the other hand, are self-threading and suited for one-sided access, often used in electronics, enclosures, and signage where concealment and permanence are critical.

At WSR Products, we offer a full range of tamper-proof fasteners—whether you need the high-strength hold of a bolt or the stealthy permanence of a security screw, every product is engineered to resist unauthorized removal.

Security Fasteners

Security Screws

Self-threading and suited for one-sided access.

Sheet Metal thread (type ab)

  • 4-24 x 1/4 up to 1"
  • 6-20 x 1/4 up to 2"
  • 8-18 x 1/4 up to 3"
  • 10-16 x 1/4 up to 3"
  • 12-14 x 1/4 up to 3"
  • 14-14 x 1/4 up to 3"

Concrete screw with silver guard

  • 14-15 x 1-1/4 up to 2-3/4"
  • Special lengths and colors available

Other types of Tapping Screws

  • Type F
  • Type A
  • Trilobular 


Security Bolts

Require a nut or tapped hole.

Standard sizes and length range.

  • 4-40 x 3/16 up to 4-40 x 1-1/2"
  • 6-32 x 3/16 up to 6-32 x 2"
  • 8-32 x 1/4 up to 8-32 x 3"
  • 10-24 x 1/4 up to 10-24 x 3"
  • 10-32 x 1/4 up to 10-32 x 3"
  • 12-24 x 1/4 up to 12-24 x 3"
  • 1/4-20 x 1/4 up to 1/4-20 x 4"
  • 1/4-28 x 1/4 up to 1/4-28 x 4"
  • 5/16-18 x 1/2 up to 5/16-18 x 4"
  • 5/16-24 x 1/2 up to 5/16-24 x 4"
  • 3/8-16 x 1/2 up to 3/8-16 x 4"
  • 3/8-24 x 1/2 up to 3/8-24 x 4"
  • 7/16-14 x 3/4 up to 7/16- 14 x 4"
  • 7/16-20 x 3/4 up to 7/16-20 x 4"
  • 1/2-13 x 3/4 up to 1/2-13 x 4"

Metric sizes and length range

  • M3-0.5 x 6mm up to 25mm
  • M3.5-0.6 x 6mm up to 38mm
  • M4-0.7 x 6mm up to 50mm
  • M5-0.8 x 6mm up to 75mm
  • M6-1.0 x 6mm up to 75mm
  • M8-1.25 x 12mm up to 100mm
  • M8-1.0 x 12mm up to 100mm
  • M10-1.5 x 16mm up to 100mm
  • M10-1.25 x 16mm up to 100mm
  • M12-1.75 x 19mm up to 100mm
  • M12-1.5 x 19mm up to 100mm

Drive types

  • Tamper Resistant 6-Lobe (torx equivalent)
  • Tamper Resistant 5-lobe (torx plus equivalent)
  • Tamper Resistant Hex
  • Tri-groove
  • Inquire about your needs 




Materials

  • low carbon steel  - 1018 / 1022
  • Carbon Alloy - 4037 / 8740
  • 302hq Stainless Steel
  • 316L Stainless Steel
  • Inquire about your needs 




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WSR Products

4792 Felspar Street, Riverside, CA, USA

(951)-681-2195

Copyright © 2025 WSR Products - All Rights Reserved.

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