Customer Support: +1 416-401-8730

Login to i2i Subscription Intertek.com
  • There are no items in your cart
Please enter a keyword to search
Advanced search
Home
AS
AS 2181.1-1978

AS 2181.1-1978

Withdrawn

Withdrawn

A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.

Screwing Taps General Purpose Metric Screw Threads

Available format(s)

Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Withdrawn date

06-30-2017

Language(s)

English

Published date

07-01-1978

Publisher

Standards Australia

Preview

1 - AS 2181, PART 1-1978 SCREWING TAPS - GENERAL PURPOSE METRIC SCREW THREADS
4 - PREFACE
7 - CONTENTS
9 - SECTION 1. SCOPE AND GENERAL
9 - 1.1 SCOPE.
9 - 1.2 TERMS AND DEFINITIONS.
9 - 1.2.1 Terminology of the Thread Profiles.
12 - 1.2.2 General Terminology of Taps.
13 - 1.2.3 Terminology of Cutting Features.
13 - 1.3 TOLERANCE SYSTEM.
13 - 1.4 MATERIALS.
13 - 1.5 HEAT TREATMENT.
15 - 1.6 DESIGNATION AND MARKING.
15 - 1.6.1 Marking.
15 - 1.6.2 Designation for the Purpose of an Enquiry or Order.
16 - SECTION 2. GENERAL DIMENSIONS OF TAPS
16 - 2.1 SCOPE OF SECTION.
16 - 2.2 GENERAL DIMENSIONS OF STANDARD MACHINE AND HAND TAPS.
22 - SECTION 3. SCREW THREAD LIMITS FOR GROUND THREAD TAPS
22 - 3.1 SCOPE OF SECTION.
22 - 3.2 TAP CLASSES.
23 - 3.3 TAP PITCH DIAMETER TOLERANCE.
24 - 3.4 TAP MAJOR DIAMETER.
24 - 3.5 TAP MINOR DIAMETER.
24 - 3.6 TOLERANCE ON PITCH.
24 - 3.7 FLANK ANGLE TOLERANCE.
31 - 3.8 RUNOUT.
31 - 3.9 SELECTION OF TAP CLASS.
32 - SECTION 4. SCREW THREAD LIMITS FOR CUT THREAD TAPS
32 - 4.1 GENERAL.
32 - 4.2 TAP PITCH DIAMETER TOLERANCE.
32 - 4.3 TAP MAJOR DIAMETER.
32 - 4.4 TAP MINOR DIAMETER.
32 - 4.5 TOLERANCE ON PITCH.
32 - 4.6 FLANK ANGLE TOLERANCE.
33 - 4.7 RUNOUT.
36 - APPENDIX A - GENERAL DIMENSIONS OF LONG SHANK MACHINE TAPS
36 - A1 GENERAL.
36 - A2 GENERAL DIMENSIONS OF LONG SHANK MACHINE TAPS.
36 - A3 TAP SCREW THREAD LIMITS.
36 - A4 LONG SHANK MACHINE TAPS OVER 24 mm DIAMETER.
39 - APPENDIX B - EXTENDED TOLERANCE SYSTEM FOR TAPS
39 - B1 GENERAL.
39 - B2 BASIS OF THE SYSTEM.
39 - B3 TAP CLASSES.
40 - B4 PITCH DIAMETER TOLERANCE.
41 - B5 MAJOR DIAMETER.
44 - APPENDIX C - RECOMMENDED SIZES FOR TAPPING DRILLS
44 - C1 GENERAL.
45 - C2 RECOMMENDED DIMENSIONS FOR TAPPING DRILLS.
51 - APPENDIX D - GENERAL DIMENSIONS AND BASIS FOR THE DERIVATION OF TOLERANCES FOR MACHINE AND HAND TAP BLANKS (INCLUDING THOSE F
51 - D1 GENERAL.
51 - D2 NOMINAL DIMENSIONS.
51 - D3 MANUFACTURING TOLERANCES.

Specifies taps for cutting ISO metric general purpose screw threads in both fine and coarse pitch series. It covers materials, properties, and basic design details for taps of diameter 1 to 64 mm; the diameter/pitch combinations are in agreement with AS 1721 and AS 1725. The ISO tolerance system for the threaded limits is adopted except that the tolerance increments have been additionally applied to the major diameter in order to ensure assembly of coated products. Tap blanks are the same as those given in ISO/R529 and ISO 2283.

This standard applies to taps for cutting ISO metric screw threads. It includes standard machine taps and hand taps with ground threads and also taps with cut threads, and covers diameters from 1 mm up to and including 64 mm in both coarse and fine pitch series. The diameter/pitch combinations are in agreement with AS 1275* and AS 1721. General dimensions, tolerances, and deviations for the threaded portion, types of taps, and other main features are specified, but the details of design are left to the manufacturer. If specific design features are required these need to be specified by the purchaser at the time of his enquiry or order. Taps for the tapping of nut threads are not specified in this standard owing to the many varieties in existence.Cut thread taps are specified for metric coarse pitch screw threads only, and one tolerance class is specified.The general dimensions of long shank machine taps, and tapping drill sizes for use with fluted taps are also included in appendices.NOTE: To ensure interchangeability of machine taps in related holders, the blank dimensions given in Supplement 1 for inch screwing taps are the same as those specified in this standard for metric threads.

Committee
ME-010
DocumentType
Standard
ISBN
0 7262 1500 7
Pages
44
PublisherName
Standards Australia
Status
Withdrawn
Supersedes

Reconfirmed 1987

AS 1721-1985 General purpose metric screw threads
AS 1275-1985 Metric screw threads for fasteners (Reconfirmed 2017)
AS 1654-1974 Limits and fits for engineering (Metric units)

View more information
US$82.57
Excluding Tax where applicable
USD
CAD
CHF
CNY
DKK
EUR
GBP
HKD
IDR
INR
JPY
KRW
MXN
NOK
NZD
SEK
SGD
USD
ZAR
Hardcopy - English
PDF 1 User - English
PDF 3 Users - English
PDF 5 Users - English
PDF 9 Users - English
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50

Access your standards online with a subscription

Features

  • Simple online access to standards, technical information and regulations.

  • Critical updates of standards and customisable alerts and notifications.

  • Multi-user online standards collection: secure, flexible and cost effective.

Learn more on subscription solutions

or

Get in touch with us