1, For studs that are not completely threaded, there are two types of studs: full-bodied studs, and undercut studs. Full-bodied studs have a shank equal to the major diameter of the thread. Undercut studs have a shank equal to the pitch diameter of the screw thread. Undercut studs are designed to better distribute axial stresses. In a full-bodied stud the stresses are greater in the threads than in the shank.

Undercut studs (rolled thread) are also stronger because the metal is "rolled" up to the major diameter, not removed. This preserves the grain of the steel, and in some cases even enhances it. Full bodied studs (cut thread) are weaker because metal is removed to create the thread, disturbing the grain of the steel.

Undercut studs are only required in applications where the stud is exposed to fatigue. Cut threads are entirely suitable for many applications, even when rolled threads might be slightly stronger. Mass-produced fasteners (standard bolts and studs) are usually rolled, but jobbed parts with custom features and small lot sizes are likely to be cut.

Q1.What is your main products?
 

A1:Our main products are fasteners and hardware parts: bolts, screws, rods, nuts, washers,anchors,rivets in steel and stainless steel etc.Hardware parts such as solar panel hardware,HVAC accessores and floor drains parts.

Q2. How to ensure that every process's quality?

A2:Jiaxing Relia owns its professional laboratory to make sure each shipment we made with qualified products.

Q3.How long is your delivery time?

A3:Our delivery time is generally 15 to 30 days, according to the quantity of order.

Q4.The anchor bolt do you have in stock ?

A4:Yes ,we have.

Q5.Can you provide a sample?

Q5:Yes, we can provide free sample.