ASME B18.29.2M:2005 pdf free download

ASME B18.29.2M:2005 pdf free download.Helical Coil Screw Thread Inserts: Free Running and Screw Locking.
ASME B18.29.2M delineates the dimensional, mechanical, and performance data for the metric series helical coil screw thread insert and threaded hole into which it is Installed. Appendices that describe insert selection. STI (screw thread insert) taps, insert installation, and removal tooling are also included.
The inclusion of dimensional data in this Standard is not intended to imply that all products described are stock sizes.
2 COMPARISON WITH ISO STANDARDS
At this time, no ISO Standard for metric helical coil screw threads exists. Further, no work within ISO is expected for some time.
3 REFERENCES
[he tollowing is a list ot publications reterenced in this Standard, Unless otherwise specified, the referenced standard shall be the most recent issue at the time of order placement.
ASME B1.3M, Screw Thread Gaging Systems for Dimensional Acceptability — Inch and Metric Screw Threads (UN, UNR, UNJ, M, and MJ)
ASME B1.13M, Metric Screw Threads — M Profile
ASME B1.16M, Gages and Gaging for Metric M Profile Screw Threads
ASME B1.21M, Metric Screw Threads — MJ Profile
ASME B18.12, Glossary of Terms for Mechanical Fasteners
ASME B18.18.IM, Inspection and Quality Assurance for General Purpose Fasteners
ASME 818.24, Part Identifying Number Code System Standard for BIS Fastener Products
ASME 1346.1, Surface Texture (Surface Roughness, Waviness, and Lay)
ASME B47.1, Gage Blanks
ASME B94.9, Taps — Cut and Ground Threads
ASME Y14SM, Dimensioning and Tolerancing
ASME Y14.36M, Surface Texture Symbols
Publisher: The American Society of Mechanical Engineers (ASME), Three Park Avenue, New York, NY 10016-5990; Order Department: 22 Law Drive, Box 2300, Fairfield, NJ 07007-2300
block made from 2024-T4 (SAE AMS4I2O or ASTM B 209M) aluminum alloy. After installation, the tang shall be removed. The surface of the test block from which the insert is assembled shall be marked “TOP” and shall be marked to indicate the radial location where the assembled insert begins. A steel spacer meeting the requirements of Fig. 3 and Table 6 shall be used for developing the bolt load.
11.2.3 Torque Test Method. The torque test shall consist of a 15-cycle, room temperature test. A new bolt or screw and new tapped hole shall be used for each complete 15-cycle test. For each of the 15 cycles, bolts shall be assembled and seated to the assembly torque specified in Table 5. Bolts shall be completely disengaged from the locking coils of the insert at the end of each cycle. The test shall be run at less than 40 rpm to yield a dependable measure of torque and avoid heating of the bolt.
11.2.4 Maximum Locking Torque. Maximum locking torque shall be the highest torque value encountered on any installation or removal cycle and shall not exceed the values spedlied in Table 5. Maximum locking torque readings shall be taken on the first and seventh installation cycles before the assembly torque is applied and on the 15th removal cycle.
11.2.5 Minimum Breakaway Torque. Minimum breakaway torque shall be the torque required to overcome static friction when 100% of the locking feature is engaged and the bolt or screw is not seated (no axial load). It shall be recorded at the start of the 15th removal cycle. The torque value for any cycle shall be not less than the applicable value shown in Table 5.
11.2.6 Acceptance. The inserts shall be considered to have failed if, at the completion of any of the tests and inspection, any of the following conditions exist:
(a) any break or crack in the insert
(b) installation or removal torque exceeds the maximum locking torque value in Table 5
(c) breakaway torque less than the values in Table 5
(d) movement ol the insert beyond ±90 deg relative to the TOP surface when installing or removing the test bolt
(e) seizure or galling of the insert or test bolt
(f) tang not broken off, which interferes with the test bolt at installation
(g) tang breaks oFf during insert installation.