standard, ensuring that fasteners used in Japanese engineering projects meet globally recognized performance metrics. 日本規格協会 JSA GROUP Webdesk Key Scope and Applications The standard applies specifically to fasteners with coarse thread (M1.6 to M39) fine pitch thread (M8×1 to M39×3)
The JIS B1051 standard is a cornerstone of Japanese industrial manufacturing. It defines the mechanical properties of fasteners made of carbon steel and alloy steel. If you are looking for a download, it is essential to understand what the document covers, why it matters, and the legal ways to access this technical data. What is JIS B1051?
JIS B1051 is the Japanese Industrial Standard for "Mechanical properties of fasteners made of carbon steel and alloy steel." It specifically focuses on bolts, screws, and studs. jis b1051 pdf free
Measures the material's resistance to localized surface deformation, typically tested using Rockwell, Brinell, or Vickers scales.
Applies a specific load to ensure the bolt returns to its original length without permanent deformation. If you are looking for a download, it
At its core, the standard classifies fasteners into distinct property classes. Property classes ranging from 3.6 to 12.9 are defined, with each class specifying the fastener's minimum tensile strength, yield strength, hardness, and elongation.
The copyright notice on the official standard explicitly states: "Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher". I can provide those. Or
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JIS B 1051 shares a close relationship with ISO 898-1, making it widely recognized and accepted in the international fastener industry. Many manufacturers can produce fasteners that simultaneously satisfy both Japanese and international standards, streamlining global trade and supply chains. When revisions were made to the international standard in 1978, JIS was subsequently revised for consistency.
If you need a specific table of tensile strength values for class 10.9 or 12.9 fasteners, I can provide those. Or, if you are looking for the equivalent standard for nuts (JIS B1052), I can help with that as well. Jis B 1051 2000 PDF - Scribd