SAE MA 1567C:2019 pdf free

SAE MA 1567C:2019 pdf free.Insert, Screw Thread, Helical Coil Metric Series, Standard Assembly Dimensions for
Helical coil inserts are screw thread bushings coiled from diamond-shaped cross-section wire. They are screwed into tapped holes to form nominal size internal threads. Inserts are installed by torquing through a diametral tang that is notched for tang removal.
Assembled inserts are controlled by the tolerance range of the tapped hole into which the insert is fitted. Due to the radius on the crest of the insert at the minor diameter, the assembled insert will accept parts having MJ external threads in accordance with MA1370 and FED-STD-H28/21. The grip coil or coils of the screw-locking insert are shaped to provide a self-locking torque when the screw is installed in the assembled insert.
Thread Tolerance Class:The insert when assembled into a tapped hole in accordance with this document can be used with M or MJ external threads and will provide an internal thread meeting MA1370 and FED-STD-H28/21 per Section 5 as follows:
a. Tolerance class 4H6H for 2 through 5 mm sizes
b. Tolerance class 4H5H for 6 mm and larger sizes
For applications where the tensile strength of the installed insert is a consideration, Table 2 will aid in applying the standard design practice of relating the tensile strength of the bolt material against the shear strength of the parent or boss material to develop the full load value of the bolt rather than stripping the parent or tapped material. In using this table, the following factors must be considered The tabulated depth of blind hole for thread tapping allows sufficient depth for assembled insert top coil to be 1 .5 pitches below boss surface. For insert sizes 8 mm and smaller, drill depth FP provides for
minimum full thread depth H using a plug tap having 4 pitches tap chamfer, plus a length equal to 0.5x nominal insert size to clear the tap external center (conical end), plus 1 pitch tap end clearance. For insert sizes larger than 8 mm, drill depth FP is for plug tap having 4 pitches tap chamfer, plus 1 pitch tap end clearance. Drill depth FB is for bottoming taps having 2 pitches tap chamfer, plus 1 pitch tap end clearance. If tap drill holes are not countersunk, the assembled insert top coil may be 0.5 pitch max below boss surface which allows for a 1 pitch reduction in tabulated depth of blind drilled hole dimensions.SAE MA 1567C pdf free download.