ASME B1.8 1988 R2021

$98.04

ASME B1.8 – 1988(R2016) Stub Acme Screw Threads

Published By	Publication Date	Number of Pages
ASME	1988

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Category: ASME

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Description

When formulated prior to 1895, regular ACME screw threads were intended to replace square threads and a variety of threads of other forms used chiefly for the purpose of producing traversing motions on machines, tools, etc. For current information on ACME threads, see the latest edition of ASME B1.5. The Stub ACME thread came into being early in the 1900’s. Its use has been generally confined to those unusual applications where a coarse-pitch thread of shallow depth is required due to mechanical or metallurgical considerations. Federal Government use. When this Standard is approved by the Department of Defense and Federal Agencies and is incorporated into Federal Standard-H28/13 [FED-STD H28/13], Screw Thread Standards for Federal Services, Section 13, the use of this Standard by the Federal Government is subject to all the requirements and limitations of Federal Standard-H28/13 [FED-STD H28/13].

PDF Catalog

PDF Pages	PDF Title
5	Foreword
7	Standards Committee Roster
9	Contents Figures Appendices
10	Tables
11	General and Historical 1 Specifications for Stub Acme Threads
12	1 Stub Acme Form of Thread
13	2 Disposition of Allowances, Tolerances, and Crest Clearances for Stub Acme Threads
14	1 Tolerance on Major and Minor Diameters of External and Internal Threads
15	2 Gages for Stub Acme Screw Threads
18	2 Stub Acme Screw Thread Form, Design Dimensions
19	3 Stub Acme Screw Threads, Standard Series, Basic Dimensions
20	4 Tolerances and Allowances for Major and Minor Diameters, Stub Acme Screw Threads, Standard Series
21	5 Pitch Diameter Allowances for Stub Acme Screw Threads
22	6 Pitch Diameter Tolerances for Stub Acme Screw Threads
23	7 Limiting Dimensions and Tolerances, Stub Asme Screw Threads, Standard Series
25	8 Plain Gage Tolerances 9 Tolerances for Go and Not Go Threads Working and Setting Gages, Stub Acme Screw Threads
26	10 Pitch Diameter Compensation for Adjusted Lengths of Go Ring Gages
27	A Alternative Stub Acme Threads, Modified Form 1 and Modified Form 2
28	Figures A1 Modified Stub Acme Thread With Basic Height of 0.375p (Form 1) A2 Modified Stub Acme Thread With Basic Height of 0.250p (Form 2)
29	Tables A1 Modified Stub Acme Thread Form, Design Dimensions (Form 1)
30	A2 Modified Stub Acme Thread Form, Design Dimensions (Form 2)
31	B Three-Wire Method of Measurement of Pitch Diameter of 29 deg. Stub Acme Threads
32	B1 Wire Sizes and Constants, Single-Start Stub Acme Threads (29 deg.)
33	B2 Values for Wire Measurement of Single-Start Standard Stub Acme Threads (29 deg.)
34	B3 Values of (1 + cosec a ’) for = 14 deg. 30 min and Lead Angles From 0 deg. to 5 deg.
36	B4 Best-Wire Diameters and Constants for Large Lead Angles, 1 in. Axial Pitch Stub Acme Threads (29 deg.)
38	B1 Basis of Lead Angle Correction for External Thread