Bolt & Nut for Titakorn Steel Purlin is a 8.8 grade steel nut suitable for heavy-power works. Hardened with electro galvanized method. 1 Set consist of one 30 mm. bolt, one 40 mm. bolt, 1 nut and 2 backing rings to fix purlin to cleat by tightening the bolt at 55 newton-meter. Bolt M 12 mm. x 30mm and Bolt M 12 mm. x 40mm suitable for 300 mm. height purlin (perforate the 22 mm. x 22 mm. or 22 mm. x 26 mm. hole in purlin.)

Hole Detail

Gauge Line

 

 

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