How do you identify aircraft bolts?
AN-type aircraft bolts can be identified by the code markings on the bolt heads. The markings generally denote the bolt manufacturer, the material of which the bolt is made, and whether the bolt is a standard AN-type or a special purpose bolt.
How do you read NAS bolts?
The series number (20004) indicates the bolt class and diameter in sixteenths of an inch (internal-wrenching, 1/4-inch diameter). The letter H before the dash number indicates that the bolt has a drilled head for safetying. The dash number (9) indicates the bolt grip in sixteenths of an inch.
What is difference between NAS and an bolts?
NAS bolts have a higher tensile strength (usually about 160,000 psi) and can be identified by a cupped out head. Close tolerance bolts are machined more accurately than general purpose bolts and they are used in applications requiring a very tight fit.
How are threaded fasteners and rivets identified?
Threaded fasteners and rivets are identified by Air Force-Navy (AN), National Aircraft Standard (NAS), and Military Standard (MS) numbers. Quick-release fasteners are identified by factory trade names and size designations.
What does NAS stand for in hardware?
Network-attached storage (NAS) is a file-level (as opposed to block-level storage) computer data storage server connected to a computer network providing data access to a heterogeneous group of clients. NAS is specialized for serving files either by its hardware, software, or configuration.
What grade are NAS bolts?
Grade 5
The default metal choice for most NAS screws is Grade 5 steel that can be plated with other metals.
What is an MS and NAS?
In addition to all types of screws, nuts, and rivets, NAS standards define high pressure hose, electrical connectors, splices and terminations, rod end bearings, and many other types of hardware and components. MS- Military standard started around the 1950s and for the most part replaced the AN hardware series.
What does an stand for on aircraft bolts?
Army Navy Fastener Standards AN fasteners are the industry standard for aircraft, and the name “AN” stands for Army/Navy. It is an indicator that the nuts are made to very specific standards to stand up to the toughest jobs without faltering. These nuts are made to military specifications.
What does an stand for in aviation hardware?
AN means the bolt is manufactured according to Air Force-Navy specs. 4 identifies the diameter of the bolt shank in 1/16″ increments. 4 identifies the length of the shank in 1/8″ increments. A means the shank of the bolt is undrilled (no letter here means a drilled shank)
