Figure 10.1 (p. 386)
Helical threads of pitch p, lead L and lead angle .
Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek
Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved.
Figure 10.2 (p. 386)
Unified and ISO thread geometry. The basic profile of the external thread is
shown.
Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek
Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved.
Table 10.1a (p. 387)
Basic Dimensions of Unified Screw Threads (Continued on next two slides.)
Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek
Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved.
Table 10.1b (cont.)
Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek
Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved.
Table 10.1c (cont.)
Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek
Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved.
Table 10.2 (p. 388)
Basic Dimensions of ISO Metric Screw Threads
Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek
Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved.
Figure 10.3 (p. 389)
Tolerance zones for various classes of unified threads. Note: Each class – 1, 2,
and 3 – uses a portion of the zones shown.
Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek
Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved.
Figure 10.4 (p. 389)
Power screw thread forms. [Note: All threads shown are external (i.e., on the
screw, not on the nut); dm is the mean diameter of the thread contact and is
approximately equal to (d + dr)/2.]
Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek
Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved.
Table 10.3a (p. 390)
Standard Sizes of Power Screw Threads (Continued on next slide.)
Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek
Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved.
Table 10.3b (cont.)
Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek
Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved.
Figure 10.5 (p. 391)
Weight supported by three screw jacks. In each screw jack, only the shaded
member rotates.
Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek
Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved.
Figure 10.6 (p. 391)
Screw thread forces.
Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek
Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved.
Figure 10.7 (p. 394)
Comparison of thread angles measured in axial and normal planes ( and n).
Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek
Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved.
Figure 10.8 (p. 396)
Efficiency of Acme screw
threads when collar friction is
negligible. (Note: Values for
square threads are higher by
less than 1 percent.)
Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek
Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved.
Figure 10.9 (p. 397)
Ball bearing screw assembly with a portion of the nut cut away to show
construction. (Courtesy Saginaw Steering Gear Division, General Motors
Corporation.)
Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek
Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved.
Figure 10.10 (p. 398)
Screw jack lifting a nonrotating load.
Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek
Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved.
Figure 10.13 (p. 402)
Bolt with pilot surface.
Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek
Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved.
Figure 10.14 (p. 403)
Alternative screw press arrangements.
Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek
Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved.
Figure 10.15 (p. 404)
Basic threaded fastener types.
Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek
Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved.
Figure 10.16 (p. 405)
Some common screw (and bolt) head types.
Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek
Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved.
Figure 10.17 (p. 405)
"Tamper-resistant" screw heads.
Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek
Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved.
Figure 10.20 (p. 412)
Common types of lock washers.
Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek
Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved.
Figure 10.21 (p. 412)
(a) Slotted and (b) castle nuts. Each is also shown with a drilled bolt and cotter pin.
Fundamentals of Machine Component Design, 4/E by Robert C. Juvinall and Kurt M. Marshek
Copyright © 2006 by John Wiley & Sons, Inc. All rights reserved.