MSKT Guardrail Terminal – MASH Sequential Kinking Terminal

MSKT guardrail terminal

The MASH Sequential Kinking Terminal (MSKT) is an energy-absorbing tangent guardrail terminal that is MASH TL-2 and TL-3 compliant.
During head-on impacts, the MSKT guardrail terminal head slides over the W-Beam guardrail, sequentially kinking it. The kinked rail exits the head, and the vehicle comes to a controlled stop, using the same effective technology seen in NCHRP 350 SKT field performance. When impacted along the side within the length of need, the MSKT functions like a guardrail, containing and safely redirecting vehicles.
MSKT features an impact head that can be used on existing sequential kinking terminal (SKT) systems for maintenance repairs. This interchangeability allows you to save on inventory costs. Only minimal components need to be inventoried for continual maintenance purposes and new MASH guardrail installations.
Our highway road safety barriers are strong, long-lasting, and easy to install. And when you partner with Gregory Highway—the national leader in highway guardrails and roadside safety—you will always get a quick turnaround and responsive service.
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MSKT Guardrail Terminal Features

  • MASH TL-2 and TL-3 compliant
  • Utilizes the same field-proven sequential kinking technology used in the NCHRP 350 SKT
  • Energy-absorbing tangent terminal uses proven sequential kinking technology
  • Improved impact head and anchorage system
  • Length of need point at post 3 is 12’6” downstream
  • Easy installation; familiar for work crews
  • The same footprint as NCHRP 350 SKT

MSKT guardrail terminal diagram


Product Specifications

  • 50 ft. long with 8 posts spaced at 6’3” centers
  • Use with rail heights of 30 to 32 inches
  • 25:1 optional flare rate
  • 8” or 12” blocks

AASHTO Specifications

Our guardrail is manufactured to AASHTO specifications in M180 Class A or B, and finish types 1, 2, 3, or 4. Every piece of Gregory Highway guardrail is stamped with a brand registration that is repeated throughout the entire length of the rail.

Gregory Stamping Code:

  1. Manufacturer: GH=Gregory highway
  2. AASHTO Specifications
  3. Mill Heat Number Code
  4. Galvanized Lot
    • 01 = Week (1st week)
    • 23 = Year (2023)
  5. Class
    • Class A = 12 gauge 0.105in (2.67mm)
    • Class B = 10 gauge 0.135in (3.43mm)
  6. Type
    • Type 1 = Zinc coated 1.8 oz/sq. ft. (550 g/sq. m.) minimum single spot
    • Type 2 = Zinc coated 3.6 oz/sq. ft. (1,100 g/sq. m.) minimum single spot
    • Type 3 = Uncoated Steel
    • Type 4 = Weathering Steel
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When you need complete solutions that are strong, long-lasting, and easy to install, you need to partner with Gregory Highway. As the national leader in highway guardrails and roadside safety, you can rely on us for quick turnarounds, competitive pricing, and responsive service. And we’re proud to say our steel guardrail and highway products are manufactured in the heart of the U.S. Contact us today to get started on your next highway safety project.