New Standard Update! Revised Shear-Strength Test Specification for Structural Bolts — What Changes Should You Note in Procurement?

Recently, the specifications related to shear-strength testing for structural bolts have been iterated and updated. Amid the rapid development of steel-structure projects, high-strength fasteners serve as core load-bearing components for construction, heavy-industry and steel-structure infrastructure. Their mechanical-property testing standards have always constituted the core basis for industrial quality control. Targeting Grade 8.8 and Grade 10.9 high-strength structural bolts widely used in projects, the specifications optimize the complete set of testing procedures, test evaluation criteria and environmental-control requirements. They have become an important reference for current steel-structure project acceptance, export-order verification and third-party quality audits, and represent a core standard-update hotspot in the fastener industry this year.

Compared with the old-version specifications, this update makes refined adjustments to core details of bolt shear tests. It mainly optimizes the test-evaluation logic for single-shear-plane and double-shear-plane tests, and unifies standards for test loading rate, sample pre-treatment as well as test-environment temperature and humidity. It thoroughly addresses long-standing industry pain points including inconsistent evaluation criteria among different testing institutions, deviation of test data and confusing acceptance standards. In many past foreign-trade procurement projects, batches of bolts adopting old testing standards produced third-party test reports that were not recognized by overseas supervisors and engineering parties. This directly delayed order acceptance and project construction periods, bringing unnecessary performance-risk increases for enterprises.

For overseas-project purchasers, foreign-trade enterprises and steel-structure construction units, timely follow-up on this specification update is critical. The shear strength of structural bolts directly determines the load-bearing stability and anti-damage capacity of building joints and equipment-connection positions, and acts as the core guarantee for long-term safe operation of steel-structure projects. The new standard further tightens the mechanical tolerance margin of finished bolts, puts forward higher supporting requirements for heat-treatment processes, material uniformity and finished-product dimensional accuracy, and forces fastener manufacturers to achieve quality upgrading.

Based in Jiaxing, Zhejiang, Jiaxing Aoke Trading cooperates with local manufacturing facility Jiaxing Aoke Hardware. We have fully updated our internal inspection system in accordance with the latest specification. From raw material inspection and heat treatment regulation to final mechanical performance sampling, all procedures strictly follow the new shear strength test standards. We also provide professional third-party verification services, delivering standard test reports that comply with GB, ISO, ASTM and other international standards to meet global project acceptance requirements.

Practical tips for overseas buyers:

1.Specify the latest shear-strength test standard within technical agreements for new-project orders to avoid version mismatch.

2.Confirm third-party labs have upgraded test fixtures & evaluation criteria before sample submission.

3.For Grade 10.9S and above structural bolts, request full raw test records rather than simple pass-or-fail conclusions.

Continuous standard iteration drives industrial quality progress. Adhering to standardized production and strict quality control, Jiaxing Aoke Trading supplies reliable high-strength structural bolts for global steel structure projects and guarantees long-term connection safety for overseas engineering projects.