Specification for the tapping of holes to receive wire thread inserts (UNC and UNF threads) Diameters below ¼ in

Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

31-01-1966

Publisher

British Standards Institution

Co-operating organizations
Foreword
Section 1 - Tapped holes
1 Scope
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 sizes for cutting diameter
Section 3 - Gauging system
8 General
9 Design and general dimensions
10 Tolerances and limits of size

Limits of size for tapped holes to accommodate wire thread inserts to provide thread sizes from No. 2 to No. 12 UNC inclusive and from No. 2 to No. 12 UNF inclusive. Recommendations for general dimensions and limits of size on the threaded portion of screwing taps intended to produce holes to the limits specified; details of a recommended gauging system for checking them.

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 No. 2 to No. 12 UNC and UNF;

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.

Committee	FME/9
DevelopmentNote	Reviewed and confirmed by BSI, March 2013. (03/2013)
DocumentType	Standard
Pages	14
PublisherName	British Standards Institution
Status	Current

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

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BS 3409-2:1966

Specification for the tapping of holes to receive wire thread inserts (UNC and UNF threads) Diameters below ¼ in

Table of Contents

Abstract

Scope

General Product Information

Standards Referenced By This Book

Category

Subcategory