BS 3409-1:1961
Current
The latest, up-to-date edition.
Specification for the tapping of holes to receive wire thread inserts (UNC and UNF threads) Diameters ¼ in and over
Hardcopy , PDF
English
16-08-1961
Important note : Users cannot be edited or removed once added to your Multi user PDF.
Co-operating organizations
Foreword
1 Scope
Section 1 - Tapped holes
2 Form of thread and limits of size
3 Identification
Section 2 - Screwing taps
4 General dimensions
5 Marking
6 Form of thread
7 Limits of size for cutting diameter
Section 3 - Gauging system
8 General
9 Design and general dimensions
10 Tolerances and limits of size
Specifies limits of size for tapped holes to accommodate wire thread inserts to provide thread sizes from ¼ in to 1½ in UNC inclusive and from ¼ in to 1 in UNF inclusive. It includes recommendations for general dimensions and limits of size on the threaded portion of screwing taps intended to produce holes to the limits specified, together with details of a recommended gauging system for checking them.
| Committee |
FME/9
|
| DevelopmentNote |
Reviewed and confirmed by BSI, March 2013. (03/2013)
|
| DocumentType |
Standard
|
| Pages |
20
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
This British Standard comprises three sections:
Section 1, which specifies limits of size for tapped holes to accommodate wire thread inserts to provide thread sizes from 1/4 in to 11/2 in UNC inclusive and from 1/4 in to 1 in UNF inclusive;
Section 2, which recommends screwing taps intended to produce holes to the limits of size specified in Section 1;
Section 3, which gives a recommended gauging system for checking the tapped holes.
| DEFSTAN 02-862(PT1)/2(2007) : 2007 | FASTENERS - PART 1: GENERAL |
| DEFSTAN 02-862(PT1)/3(2011) : 2011 | NAVAL FASTENERS - PART 1: MATERIAL SELECTION AND USE |
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.