How are socket cap screws measured?

Hex, pan, truss, button, socket cap, and round head screws are measured from right under the head to the end of the threads. Flat head screws are measured from the top of the head to the tip of the threads. Oval head screws are measured from the beginning of the undercut on the head to the tip of the threads.

What size head is M8?

DIN 912 Socket Head Cap Screw Dimensions

Size (d1) Thread Pitch Head Diameter (d2)
Max
M5 0.80 8.72
M6 1.00 10.22
M8 1.25 13.27

How are metric screws measured?

Metric fasteners are specified with a thread pitch instead of a thread count. The thread pitch is the distance between threads expressed in millimetres (measured along the length of the fastener). For example a thread pitch of 1.5 means that the distance between one thread and the next is 1.5mm.

How do you measure a metric bolt?

Metric Bolt Lengths Socket head, pan head, button head and hex head bolts are measured from the underside of the bolt head to the end of the shaft. For flat head bolts, the length includes the bolt head height and for dome head bolts the length is measured from the thickest, highest point on the curved head.

What grade are cap screws?

The Society of Automotive Engineers (SAE) has set the standards for different grades of hex head cap screws according to their strength. The grades are two, five and eight.

What is M2 3 screw size?

3 x 0.4mm Pan Head Screw (6mm Length) – 6 Pack.

How do I know if I have a M6 or M8 bolt?

The defined diameter of metric bolts is actually slightly larger than the actual diameter of the bolt shaft. So an M8 bolt would have a shaft diameter that’s slightly under 8mm which means that the bolt should fit through an 8mm hole.

Is an M10 bolt 10mm diameter?

M10 (10mm x 16mm) Hex Bolt (Fully Threaded Setscrew) – Stainless Steel (A2) (Pack of 20)