Name of fasteners: Threaded rods, threaded bar, threaded stud, stud. Bolts
Tape of threaded rods: Standards thread,
Ladder-shaped thread,
Round gear thread
Class: Grade 4.8, Grade 5.8, Grade 8.8, Grade 9.8, Grade 10.9, Grade 12.9, B7, A2(304), A4(316)
Specification: DIN 975series: M4-m52
B. S series: 3/162
U. S series: 1/43/4
Surface treatment: Bear outlook,
Galvanized,
Heat galvanizing,
Blacked
Certifications: ISO9001: 2000