Fastener Proof Load Testing
A proof load test consists of stressing the product with a specified load that the product must withstand without measurable permanent set (Method 1 – Length Measurement). The load that is used to stress the fastener is specific to the size, and grade/property class.
Test Methods – Material and Property Requirements
Fastener testing allows you to determine the mechanical properties of externally and internally threaded fasteners, washers, direct tension indicators, and rivets. Testing may consist of a machined specimen or a full-size product. The type of fastener testing that will be described below applies to a full-size product testing. Fastener testing is not applicable to all. The head design, shank thickness, and product length can determine if the testing is required of the product.
|ASTM F606/F606M||Standard Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, Direct Tension Indicators, and Rivets|
|ISO 898-1||Mechanical properties of fasteners made of carbon steel and alloy steel — Part 1: Bolts, screws and studs with specified property classes — Coarse thread and fine pitch thread|
|ISO 898-2||Fasteners — Mechanical properties of fasteners made of carbon steel and alloy steel — Part 2: Nuts with specified property classes|
|SAE J995||Mechanical and Material Requirements for Steel Nuts|
|SAE J429||Mechanical and Quality Requirements for Externally Threaded Fasteners|
|SAE J1199||Mechanical and Material Requirements for Metric Externally Threaded Steel Fasteners(STABILIZED Feb 2013)|