Engineers, procurement officers, and quality control inspectors look for the official PDF document for precise data:
The JIS B 1188 standard outlines strict physical parameters for compliance: Screw Types Covered
When sourcing global components, engineers often look for equivalents to Japanese standard parts.
While the full official standard is usually a paid document available through official bodies like ANSI or Intertek Inform , you can access technical specification sheets and dimension tables for these screws via several manufacturer and supplier PDFs:
: Provides electronic Adobe Acrobat PDF versions. jis b 1188 pdf
Defines the types of slotted screws covered (M1.4 to M10, with some extended ranges for pan head). It explicitly excludes self-tapping screws (JIS B 1122) and hexagon bolts.
To ensure engineering accuracy, always source the standard from authorized distributors. The Japanese Standards Association (JSA) publishes the official text. Look for the most updated version, which includes revisions harmonized with modern ISO standards. Avoid unauthorized third-party downloads, as outdated revisions can lead to critical dimensional errors on the production line.
Based on the significance and benefits of Jis B 1188, we recommend:
The ultimate combination for high-vibration environments where surface protection is also required. 3. Dimensional Range and Tolerances It explicitly excludes self-tapping screws (JIS B 1122)
: Screws are typically crafted from Class 4.8 carbon steel or stainless steel (such as A2-70), while washers use specific high-carbon steel to maintain their spring properties.
To help you find the exact information you need from the , tell me:
, commonly known as SEMS screws. These fasteners are manufactured by mounting a washer onto a screw blank before rolling the threads, which permanently "captures" the washer so it cannot fall off. Accuris Standards Store Key Specifications & Features
(Note: Always check an official, current version of the JIS B 1188 PDF for exact manufacturing tolerances, washer thicknesses, and outer diameters.) 4. International Cross-References and Equivalents Look for the most updated version, which includes
He tapped the file. The document opened, the familiar Japanese Industrial Standards logo staring back at him. He scrolled past the scope and terminology, his eyes scanning the tables. He wasn't just looking for bolt sizes; he was looking for the interaction between the flange and the bearing surface.
JIS B 1188: Dimensions and Requirements for Socket Set Screws
Usually Carbon Steel (Class 4.8) or 18-8 Stainless Steel (A2).