MTS Nut Grips - Manual (Page 26)

MTS Fundamental™ Bolt Grips and Nut Grips 26 Operation
Proof Load Test for Nuts
Choose appropriate fixtures for the specimen. There are two kinds of fixtures for
different specimens (See Figure 12 and Figure 13).
All of the loading plates, threaded rods, high strength bolts and threaded adapters
have spec marks. Choose those parts according to the marks. For same thread
specs, the hole of the nuts’ loading plate is smaller than that of the bolts’ loading
plate. Do not misuse these loading plates.
Debris can be discharged as a result of testing.
Debris can cause injury to personnel and damage to equipment.
Be sure to close the protection plates of the fixture and clear the personnel in front
of the fixture before testing.
Proof load test for nuts
(M5 to M10)
Choose appropriate loading plates and threaded rods for the specimen. A
threaded adapter of M12 should also be used. Screw the M12 thread of the thread
rod into the threaded adapter, Screw the other end of the thread rod into the
specimen (see Figure 12).
WARNING