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Double headed screw, hard bolt, double screw bolt, double head screw, equal length stud M12-M24

discount 70% in 2018-09-20 to 2018-09-22
price: USD$ 13.30
freight :USD$18.00,(Express)
freight :USD$7.00,(Postal parcel)
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General double headed bolt is expressed as: M12 * 100GB/T901-88 (standard) 35#/35# (material) 8.8 level /8 (modulation level) means: diameter is =12mm, length =100mmGB/T901-88 is the national standard (of course, you can also use the industry standard according to the need)

1, in the main for large equipment, installation accessories, such as mirror, mechanical seal seat, a frame that is slow, the stud used, is screwed into the body, the other end of the strap attachment installed on the nut, because attachment is often removed, the thread will wear or damage, the use of stud bolt replacement will be very convenient.
2, for the thickness of the connector is very large, bolt length is very long, will use double headed bolt.