DIN 558, ISO 4017, Technical Specification and Weight Chart of Full Threaded Hex Bolts as per DIN 558. Chemical Analysis –Spectrometer: Confirm that the right raw material is used and the finished product as per customer material requirement/specification.

Machinal Analysis - Universal testing machine (UTM): Used to test the tensile, proof load, and wedge load of the fasteners like nut, bolt, washer, etc. for different grades and material.
Tension Testing – Proof and Tensile: Verifies that the proper strength levels are present with fasteners.
Hardness Testing (Rockwell hardness machine): Penetration of a diamond indenter into the product like Bolts, nuts, washers, etc to determine the hardness of the fasteners.

Impact tester: Used to test the shear strength of the bolts, nuts, washers, and so on.

Alco Meter: Used to test the coating of the fasteners. A coating like Zinc, trivalent Zinc, hot-dip galvanized, etc
Dimensional Testing –Vernier, Micrometre & Hight Gauge - Used to check the Dimension should be as per customer requirement/drawing or international standards like ISO, Din, ASTM, etc.