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See the Difference at Night
In daylight, 3M reflective sheeting grades can look very similar. At night, the difference is dramatic. The photo compares Engineer Grade on the left, High Intensity Prismatic in the center, and Diamond Grade on the right under headlight illumination. For higher-speed roads, critical intersections, and locations where nighttime visibility matters most, Diamond Grade provides the brightest, most visible sign.
One Way Bolt (BOW2)
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One Way Bolt is a 2" x 5/16" one-way vandal-resistant bolt for mounting signs where theft or tampering is a concern. It installs with normal tools but resists removal once seated.
- 2" X 5/16" one-way vandal-proof bolt
- Easy to install with normal tools
- Difficult for vandals to take off
- Use with Breakway Nut (Item BAN516) for added security
The One Way Bolt is a 2" x 5/16" one-way vandal-resistant bolt used to mount signs where theft or tampering is a concern. It installs with normal tools but is difficult to remove once seated, and pairs with the matching breakaway nut (BAN516) for added security.
Confirm compatibility with the post, sign substrate, bracket, fasteners, and mounting method used in the complete assembly before installation.
Product Specifications
- 2" X 5/16" one-way vandal-proof bolt
- Easy to install with normal tools
- Difficult for vandals to take off
- Use with Breakway Nut (Item BAN516) for added security
- 5/16" x 2" anodized satin silver finish aluminum
Additional information
Outsmart the Dark with 3M Diamond Grade DG3 Reflective Sheeting
Where Diamond Grade Makes the Biggest Difference
Some locations are more challenging for drivers because road conditions or layout can leave less time to react. 3M Diamond Grade DG3 is engineered to return more light from vehicle headlights back toward the driver, helping signs stand out sooner and from farther away. It’s an ideal choice for:
Sharp curves and blind corners
Hills and winding roads with limited sight distance
Hidden or unexpected intersections
Warning signs that are easy to overlook
Watch the video to see how Diamond Grade can improve sign visibility in higher-risk locations.
Video courtesy of 3M.
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