Products - ZSA
12POINT HEAD BOLT

The driver of a 12-point screw uses two overlapped hexagon shapes, creating 12-points and a flanged underside. These are also referred to as ferry cap screws or 12 point flange screws.

All Metal Lock Nut

locknut is a special type of nut that resists loosening from vibrations and torque. One of the most common styles is a prevailing torque locknut. This kind of locknut has a prevailing torque feature which deforms elastically, preventing it from freely spinning like a standard nut.

Castle Nut

Flat head socket bolts are characterized by having a head with a flat top and bottom that is cone shaped or countersunk. With this design, the head of the screw can align flush or below the surrounding surface having obvious benefits.

Custom Fasteners

locknut is a special type of nut that resists loosening from vibrations and torque. One of the most common styles is a prevailing torque locknut. This kind of locknut has a prevailing torque feature which deforms elastically, preventing it from freely spinning like a standard nut.

Double End Stud Bolt

Double ended stud bolts unlike Full threaded stud bolts are non headed bolts, these are in form of a rod and have threads at both ends. These stud bolts are generally provided with double nuts and often with 4 nuts depending upon the application and requirements of the project or customer. Additionally washers can also be provided along with these stud bolts. These stud bolts are manufactured by us in carbon steel and stainless steel. Popular carbon steel grades include A 193 and A 320. Grades include , 10.9 B7, B7M, L7, L7M, B8, B8M Class 1 and Class 2. The requirements for these are mentioned in the American standard A 193.

Flat Head Socket Bolt

Flat head socket bolts are characterized by having a head with a flat top and bottom that is cone shaped or countersunk. With this design, the head of the screw can align flush or below the surrounding surface having obvious benefits.

Heavy Hex Nut

locknut is a special type of nut that resists loosening from vibrations and torque. One of the most common styles is a prevailing torque locknut. This kind of locknut has a prevailing torque feature which deforms elastically, preventing it from freely spinning like a standard nut.

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