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12.9 stage six angle M12M14M16M18M20M24 all screw bolt cup head screw

discount 70% in 2018-09-20 to 2018-09-22
price: USD$ 38.57
freight :USD$18.00,(Express)
freight :USD$7.00,(Postal parcel)
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12.9Six angle screw is the most commonly used series in high strength bolt series:12.9Class six angle screw is generally used for mechanical performance requirements of high occasions. Such as injection molding machine, hydraulic equipment, mold assembly and other places.12.9The surface hardness of the six angle screw after heat treatment can be reached39-44Degree.12.9The production standard of six angle screw in class is referenced by German standardDIN912GBGB/T70.1British standard, American Standard, production.

 Screw length:Flat head,Countersunk head screws are calculated according to the length of the master screw,Other six headed round heads,The length of the inner six corners is not connected to the head,That is, according to the length of the screw to calculate.


Screw specification:How many times is the number of times in the store?,asM10*25that is10MMcrude,25MMLong screw.


Dimensions of cushion pads for gaskets:Whichever is the thickness of the screw.

Remarks: all fasteners are in millimetersMMAs unit. All fasteners have tolerances within the national standard range