JIS B1111 metric machine screw size chart including standard diameters, thread pitch and applications for cross recessed pan head screws used in machinery, electronics and equipment assembly.

JIS B1111 Machine Screw, Metric Cross Recessed Screw

JIS B1111 specifies metric cross recessed machine screws used in machinery, equipment, electronics, and automotive applications. These screws are commonly supplied in pan head, and they are designed for reliable fastening in pre-threaded holes or with matching nuts.

JIS B1111 screws are widely used where compact head geometry, metric compatibility, and consistent thread dimensions are required. In many applications, especially Japanese equipment, JIS B1111 screws are preferred because their head dimensions and tolerances differ from common ISO or DIN equivalents.

JIS B1111 defines:

Cross recessed machine screws
Metric thread pitch by diameter
Head dimensions and recess details
Mechanical strength requirements
Manufacturing tolerances

These screws are commonly used where uniform machine screw threads, compact head dimensions, and reliable installation are required. Industry listings and technical references frequently show JIS B1111 in cross recessed pan headand small pan head forms, especially for electronics, machinery, and automotive use.