Allen Bolt Head Size Formula

A metric iso screw thread is designated by the letter m followed by the value of the nominal diameter d the maximum thread diameter and the pitch p both expressed in millimetres and separated by the hyphen sign e g m8 1 25.

Allen bolt head size formula. Hex bolt head dimensions. Us machine screws dimensions machine screw diameters. Print this page. Bolt diameter head and wrench size.

Also available from the nut place. If the pitch is the normally used coarse pitch listed in iso 261 or iso 262 it can be omitted e g m8. Us bolt head wrench size. Us hex bolts metric ansi asme b18 2 3m dimensions of hex bolts metric units.

Hex bolt lag bolt. Us hex bolts inches ansi asme b18 2 1 dimensions of hex bolts imperial units. Available in a range of sizes from m2 to m42 and din 933. Metric bolt head wrench size.

Follow the instructions in step 2 to find the wrench size to use for this bolt. Measure the outside diameter of the bolt s threads using a vernier caliper if the bolt is installed in your vehicle or piece of equipment and the bolt s head is not accessible to the vernier caliper. The following table of hex bolt head dimensions was adapted from asme b18 6 7m table 14 dimensions of hex head machine screws this table is used for smaller size hardware. Shop high quality hex bolts from ita fasteners at the reasonable price.

In stock and ready to ship. Trying to make sense of all the different screw and bolt thread lengths can be a real challenge even for the most knowledgeable of professionals. Print this page. Bolt diameter mm head wrench size mm ansi iso din.

Some bolts may vary from the standard thread length. Choose from our selection of allen bolts including alloy steel socket head screws 18 8 stainless steel socket head screws and more. Where l is the total bolt length and d nom is the nominal bolt diameter. Gessner houston tx 77040 4015 ph.