{"id":98429,"date":"2024-10-18T11:13:27","date_gmt":"2024-10-18T11:13:27","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/asme-b1-12-1987-r2013\/"},"modified":"2024-10-24T21:11:57","modified_gmt":"2024-10-24T21:11:57","slug":"asme-b1-12-1987-r2013","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/asme\/asme-b1-12-1987-r2013\/","title":{"rendered":"ASME B1.12 1987 R2013"},"content":{"rendered":"

This Standard provides dimensional tables for external and internal plastic flow interference- fit (Class 5) threads of modified National thread form in the coarse thread series (NC) in sizes 0.250 in. through 1.500 in. This is not the ANSI B1.1 UN thread form. It is intended that designs conforming with this Standard will provide adequate torque conditions which fall within the limits shown in Table 8. The minimum torque is intended to be sufficient to insure that externally threaded members will not loosen in service, the maximum torque establishes a ceiling below which seizing, galling, or torsional failure of the externally threaded components is reduced. This Standard provides for the maximum allowable interference. Appendices A,B,C, and D contain useful information that is supplementary to this Standard, such as reprints of the obsolete tentative and alternate Class 5 standards, US Navy ship specifications for elastic interference-fit coarse thread series from 0.250 in through 2.000 in, US Navy ship specifications for Class 5 Modified which includes nickel-copper-aluminum alloy external threads, and an interference metal comparison of standard to nonstandard interference-fit threads.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
5<\/td>\nForeword <\/td>\n<\/tr>\n
9<\/td>\nStandards Committee Roster <\/td>\n<\/tr>\n
11<\/td>\nContents
\n <\/td>\n<\/tr>\n
12<\/td>\nAppendices <\/td>\n<\/tr>\n
13<\/td>\nFigures
Tables <\/td>\n<\/tr>\n
15<\/td>\n1 General
1.1 Scope
1.2 Field of Application
1.3 Reference Documents
1.4 Acceptability <\/td>\n<\/tr>\n
16<\/td>\n1.5 Reference Temperature
1.6 Units of Measure
1.7 Federal Government Use
2 Terminology
2.1 General
2.2 Additional Definitions
3 Thread Designations
3.1 Class 5 External Thread <\/td>\n<\/tr>\n
17<\/td>\n3.2 Class 5 Internal Thread
4 Screw Thread Profile
4.1 Basic Profile
4.2 Design Profiles
4.3 Maximum and Minimum Interference
4.4 Formulas
5 Screw Thread Series
5.1 Standard Series
5.2 Fine Pitch Series <\/td>\n<\/tr>\n
18<\/td>\nFigures
1 Basic Thread Profile <\/td>\n<\/tr>\n
19<\/td>\n2 Design Profile for External NC-5 HF\/CSF\/ONF Thread <\/td>\n<\/tr>\n
20<\/td>\n3 Design Profile for Internal NC-5 IF\/INF Thread <\/td>\n<\/tr>\n
21<\/td>\n4 Maximum and Minimum Interference <\/td>\n<\/tr>\n
22<\/td>\n6 Screw Thread Class
7 Screw Thread Allowances and Tolerances
7.1 Allowances
7.2 Tolerances
8 Standard Series Threads and Formulas for Limits of Size
8.1 Basic Dimensions for Standard Series Threads
Tables
1 Standard NC-5 Thread Series <\/td>\n<\/tr>\n
23<\/td>\n2 Allowances for Coarse Thread Series
3 Tolerances for Pitch Diameter, Major Diameter, and Minor Diameter for Coarse Thread Series <\/td>\n<\/tr>\n
24<\/td>\n9 Thread Characteristics
4 Basic Dimensions for Coarse Thread Series <\/td>\n<\/tr>\n
25<\/td>\n5 Thread Constants <\/td>\n<\/tr>\n
26<\/td>\n9.1 Limits of Size
9.2 Pitch Diameter Limits
9.3 Major Diameter Limits
9.4 Minor Diameter Limits
9.5 Other Screw Thread Characteristics
9.6 Length of Engagement
10 Notes on Product Design and Application
10.1 Conditions of Usage
10.2 External Threaded Products <\/td>\n<\/tr>\n
27<\/td>\n5 Illustration of LE, Ts, Tolerances of Ts, and Th Required for Assembled Threads <\/td>\n<\/tr>\n
28<\/td>\n6 External Thread Dimensions for Class 5 Standard <\/td>\n<\/tr>\n
29<\/td>\n7 Internal Thread Dimensions for Class 5 Standard <\/td>\n<\/tr>\n
30<\/td>\n8 Interferences, Engagement Lengths, and Torques for Class 5 Standard <\/td>\n<\/tr>\n
32<\/td>\n10.3 Internal Threaded Products
10.4 Lead and Angle Variations
10.5 Cavity Space for Interference Material
10.6 Thread Axis Position
10.7 Surface Roughness <\/td>\n<\/tr>\n
33<\/td>\n9 Maximum Allowable Variations in Lead and Maximum Equivalent Change in Functional Diameter <\/td>\n<\/tr>\n
34<\/td>\n10.8 Lubrication
10.9 Driving Speed
10.10 Relation of Driving Torque to Length of Engagement
10.11 Breakloose Torques
11 Product Screw Thread Acceptability
11.1 Gaging Systems
10 Maximum Allowable Variation in 30 deg. Basic Half-Angle of External and Internal Screw Threads <\/td>\n<\/tr>\n
35<\/td>\n11.2 Product Thread Characteristics Conformance Requirements Over Length of Engagement for Gaging Systems 22 and 23
12 Torque <\/td>\n<\/tr>\n
36<\/td>\n11 Working Gages <\/td>\n<\/tr>\n
39<\/td>\n12 Setting Gages <\/td>\n<\/tr>\n
41<\/td>\nA Obsolete Tentative Standard and Alternate Standard for Class 5 Interference-Fit Thread
A1 Introduction
A2 Tentative Standard
A3 Alternate Standard <\/td>\n<\/tr>\n
42<\/td>\nA1 Illustration of Tolerances, Allowances, and Crest Clearances for Tentative and Alternate Class 5 Fit for Threaded Stu <\/td>\n<\/tr>\n
43<\/td>\nA2 Illustration of Loosest Condition for Tentative Class 5 Wrench Fit for Threaded Studs, 1\/2 in., 13 Threads, Set in Ha
A3 Illustration of Tightest Condition for Tentative Class 5 Wrench Fit for Threaded Studs, 1\/2 in., 13 Threads, Set in H <\/td>\n<\/tr>\n
44<\/td>\nA1 Tentative Class 5 Wrench Fit for Threaded Studs, Allowances and Tolerances for Studs and Tapped Holes, Coarse Thread <\/td>\n<\/tr>\n
45<\/td>\nA2 Tentative Class 5 Wrench Fit for Threaded Studs, Allowances and Tolerances for Studs and Tapped Holes, Fine Threaded <\/td>\n<\/tr>\n
46<\/td>\nA3 Limiting Dimensions for Tentative Class 5 Wrench Fit for American National Coarse Thread Series, Steel Studs Set in <\/td>\n<\/tr>\n
47<\/td>\nA4 Limiting Dimensions for Tentative Class 5 Wrench Fit for American National Fine Thread Series, Steel Studs Set in <\/td>\n<\/tr>\n
48<\/td>\nA4 Illustration of Loosest Condition for Alternate Class 5 Fit for Threaded Studs, 1\/2 in., 13 Threads, Set in Hard Mate
A5 Illustration of Tightest Condition for Alternate Class 5 Fit for Threaded Studs, 1\/2 in., 13 Threads, Set in Hard Mat <\/td>\n<\/tr>\n
49<\/td>\nA5 Alternate Class 5 Fit for Threaded Studs, Allowances and Tolerances for Studs and Tapped Holes, Coarse Threaded Stud
A6 Alternate Class 5 Fit for Threaded Studs, Allowances and Tolerances for Studs and Tapped Holes, Fine Threaded Studs <\/td>\n<\/tr>\n
50<\/td>\nA7 Limiting Dimensions for Alternate Class 5 Fit, American National Coarse Thread Series, Steel Studs Set in Hard Mater <\/td>\n<\/tr>\n
51<\/td>\nA8 Limiting Dimensions for Alternate Class 5 Fit, American National Fine Thread Series, Steel Studs Set in Hard Materia <\/td>\n<\/tr>\n
52<\/td>\nA9 Limiting Dimensions of Setting Plug and Thread Working Gages and Plain Diameter Gages for Alternate Class 5 Fit Thre <\/td>\n<\/tr>\n
53<\/td>\nA10 Limiting Dimensions of Thread Working Gages and Plain Diameter Gages for Alternate Class 5 Fit Tapped Holes, Americ <\/td>\n<\/tr>\n
54<\/td>\nA11 Limiting Dimensions of Setting Plug and Thread Working Gages and Plain Diameter Gages for Alternate Class 5 Fit <\/td>\n<\/tr>\n
55<\/td>\nA12 Limiting Dimensions of Thread Working Gages and Plain Diameter Gages for Alternate Class 5 Fit Tapped Holes, Americ <\/td>\n<\/tr>\n
57<\/td>\nB Specifications for Elastic Interference-Fit Thread
B1 Introduction
B2 Thread Designation
B3 External and Internal Threads Compared to NC-5 <\/td>\n<\/tr>\n
58<\/td>\nB4 Application Practice for New and Reworked External and Internal Threads <\/td>\n<\/tr>\n
59<\/td>\nB5 Gaging <\/td>\n<\/tr>\n
60<\/td>\nB1 External Thread Dimensions for NC-5 HFM
B2 Internal Thread Dimensions for NC-5 IFM <\/td>\n<\/tr>\n
61<\/td>\nB3 Engagement Length, Hole Depth, Interference, and Torque for NC-5 HFM and NC-5 IFM <\/td>\n<\/tr>\n
62<\/td>\nB4 Setting Gages for NC-5 HFM and NC-5 IFM <\/td>\n<\/tr>\n
63<\/td>\nC Class 5 Modified Specifications for Plastic Flow Interference-Fit Thread with Addition of K Monel External Thread
C1 Introduction
C2 Additions to Thread Designation Letters
C3 External and Internal Threads Compared to ASME\/ANSI B1.12 Class 5 Threads <\/td>\n<\/tr>\n
64<\/td>\nC4 Torque and Length of Engagement
C5 Application Practice for New and Reworked External and Internal Threads
C6 Gaging
C1 External Thread Dimensions for Class 5 Modified for Nickel-Copper-Aluminium (K Monel) <\/td>\n<\/tr>\n
65<\/td>\nC2 External Thread Dimensions for Class 5 Modified for Greater Cavity Space <\/td>\n<\/tr>\n
66<\/td>\nC3 Internal Thread Dimensions for Class 5 Modified <\/td>\n<\/tr>\n
67<\/td>\nC4 Interference on Pitch Diameter for Class 5 Modified <\/td>\n<\/tr>\n
69<\/td>\nD Comparison of Interference Metal for the Thread Assemblies Tabulated in the Appendices With the American National
D1 Explanation for Table D1
D2 Formulas for Volume of Interference Metal per Turn <\/td>\n<\/tr>\n
70<\/td>\nD1 Thread Assemblies Compared by Percentage of Interference Metal per Turn <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

ASME B1.12 Class 5 Interference-Fit Thread – Reaffirmed 2013<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
ASME<\/b><\/a><\/td>\n1987<\/td>\n74<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":98430,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2643],"product_tag":[],"class_list":{"0":"post-98429","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-asme","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/98429","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/98430"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=98429"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=98429"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=98429"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}