ISO 898-2 is the standard for the mechanical properties of nuts with specified property classes, made of carbon steel and alloy steel. To match this to your program, talk with our team.
What ISO 898-2 Covers
It defines the proof-load and related requirements for steel nuts, the internally threaded companion to the bolt and screw part.
How the Test Is Run
Nuts are proof loaded on a hardened mandrel or test bolt using suitable fixtures, and the proof performance is checked against the property class.
Why It Matters
Nut proof-load verification ensures the nut carries its rated load without stripping; hardened mandrels and high-force fixtures are essential.
Reading the Designation
Cited as ISO 898-2 with its edition year. Confirm the edition and specimen or fixture requirements before finalizing setup. To configure a testing setup, request a quote.
Related Standards
ISO 898-1 covers bolts and screws and ISO 3506-2 covers stainless nuts.
Request a Quote
Setting up nut proof-load testing to ISO 898-2? Request a quote and our team will help you build a system matched to your nut size and property class.
TensileMill CNC products for ISO 898-2
Our specimen-preparation systems and testing equipment compatible with ISO 898-2:
Electro Mechanical Universal Testing System 5 kN / 50 kN with Precision Load Cell
Electro-Mechanical UTM · 5 kN / 50 kN with Precision Load Cell
Threaded Fastener Grips for Bolt and Nut Tensile Testing
Threaded grips for bolt and nut tensile testing
Equip your lab for ISO 898-2 with TensileMill CNC
From specimen preparation to the test itself, TensileMill CNC supports the full ISO 898-2 testing chain. That typically means universal testing machines with wedge and tensile fixtures for fasteners, wire, and strand. Let us know your application and our engineers will help you build a compliant ISO 898-2 setup.