What is the meaning of bolt head?
1 : the head of a bolt. 2 : matrass. 3 : the end of a rifle bolt that seats the cartridge in the chamber.
What is the purpose of a bolt head?
The head is the part of the bolt with the largest diameter and its shape is designed to fit the correspondent tightening tools. Bolts’ head can also perform other functions such as spreading the clamping load over the bearing surface or locking the bolt in place, stopping rotation.
What is an aircraft bolt?
Bolts. Bolts are used in aircraft construction in areas where high strength is needed. Where this strength is not necessary screws are substituted. Aircraft quality bolts are made from alloy steel, stainless or corrosion resistant steel, aluminum alloys and titanium.
What are bolts used for?
Bolts are typically used to hold materials or objects together, or to position objects. The chamfer at the opposite end of the head provides a slightly bevelled edge which helps with inserting the bolt into holes and nuts.
What is purpose of bolt?
What is general purpose bolt explain special purpose bolt?
SPECIAL PURPOSE BOLTS Clevis Bolts. The head of a clevis bolt is round and is either slotted to receive a common screwdriver or recessed to receive a crosspoint screwdriver. This type of bolt is used only where shear loads occur and never in tension. It is often inserted as a mechanical pin in a control system.
What grade are an bolts?
The most common grading system used for bolts in the U.S. is the SAE system, but you can find metric grading systems as well. There are several grades of bolts but the three common grades for SAE are 2, 5 and 8. The common class (grades) for metric are 5.8, 8.8, 10.9 and 12.9. Each grade has a specific bolt strength.
What do you call a head in the Navy?
The Army and Air Force use the term ‘latrine’ when referring to a toilet or bathroom. The Marine Corps and the Coast Guard use the term ‘head’ when referring to a bathroom. A naval ‘head’ can vary in size. Ashore as well as aboard ship, the ‘head’ could have toilets, sinks as well as showers.
What is the length of a headed fastener?
The length of a headed fastener is the distance from the intersection of the largest diameter of the head with the bearing surface to the extreme point, measured in a line parallel to the axis of the fastener. Total distance between the underside of the nut to the bearing face of the bolt head; includes washer, gasket thickness etc.
What do you need to know about aircraft bolts?
Aircraft bolts will always have a marking on their head. If you see no markings at all on the head of a bolt, do not use it. It is probably a commercial grade bolt. The markings on bolts vary according to the manufacturer. You should see an “X” or an asterisk along with a name, etc.
What are the different types of NAS bolts?
AN bolts come in three head styles – hex head, clevis, and eyebolt. NAS bolts are available in hex head, internal wrenching, and countersunk head styles. MS bolts come in hex head and internal wrenching styles.