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1、JIS JAPANESE INDUSTRIAL STAN DA R D Translated and Published by Japanese Standards Association Screwdrivers for slotted-head screws ICs 25.140.30 Descriptors : screwdrivers, hand tools, slotted-head fasteners Reference number : JIS B 4609 : 1998 (E) 7s Copyright Japanese Standards Association Provid
2、ed by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 09:17:17 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-JIS B 4bOS-ENGL 1778 D 4733b08 0550823 T27 D B 4609 : 1998 Foreword This translation has been made ba
3、sed on the original Japanese Industrial Standard revised by the Minister of International Trade and Industry through deliberations at Japanese Industrial Standards Committee in accordance with the Industrial Standardization Law. Consequently JIS B 4609 : 1991 is replaced with JIS B 4609 : 1998. In t
4、his revision, Annex to this Standard has been prepared based on corresponding International Standards without any modification of technical contents to conform between JIS and ISOs. Further, a partial content of the former Standard has been amended in the body of this Standard. Date of Establishment
5、: 1951-06-26 Date of Revision: 1998-03-20 Date of Public Notice in Official Gazette: 1998-03-20 Investigated by: Japanese Industrial Standards Committee Divisional Council on Machine Elements JIS B 4609 : 1998, First English edition published in 1998-07 Translated and published by: Japanese Standard
6、s Association 4-1-24, Akasaka, Minato-ku, Tokyo, 107-8440 JAPAN In the event of any doubts arising as to the contents, the original JIS is to be the final authority. t L 0 O JSA 1998 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any for
7、m or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. Printed in Japan Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03
8、/12/2007 09:17:17 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-JIS B ibO7-ENGL 1778 4933bU8 0550824 9b5 S JAPANESE INDUSTRIAL STANDARD JIS B 4609 : 1998 Screwdrivers for slotted-head screws Introduction This Standard is the Japanese Industrial Standard prepared based
9、 on the International Standards shown in the Remarks, providing the classification and grade specified conventionally in the Japanese Industrial Standard and their shape and dimensions, quality, inspection, designation of products and marking in the body, and without modifying their technical conten
10、ts in Annex while supplements the provisions not specified in the corresponding International Standards (material, shape and dimensional test, inspection, designation and marking) as a part of Japa- nese Industrial Standard. The provisions or phrases underlined with dots in Annex are the matters not
11、 specified in the corresponding International Standards. Remarks : The International Standards corresponding to this Standard are as fol10 w s : ISODIS 2380-1 : 1996 Screwdrivers for slotted-head screws-Part 1 : Tips for hand- and machine-operated screw- drivers IS0 2380-2 : 1992 Screwdrivers for sl
12、otted-head screws-Part 2 : Gen- eral requirements, lengths of blades and marking of hand-operated screwdrivers 1 Scope This Japanese Industrial Standard specifies the screwdrivers used mainly for assembly or disassembly of slotted-head machine screws (11, wood screws (2) and tapping screws (3). Note
13、s (1) See JIS B 1101. (2) See JIS B 1135. (3) See JIS B 1115. 2 Normative references The following standards contain provisions which, through reference in this Standard, constitute provisions of this Standard. The most recent editions of the standards indicated below (including amendments) shall be
14、 applied. JIS B 1101 Slotted head screws JIS B 1115 Slotted head tapping screws JIS B 1135 Slotted head wood screws JIS B 1501 Steel balls for ball bearings JIS B 7726 Rockwell and Rockwell superficial hardness testing machines JIS G 3506 High carbon steel wire rods JIS Z 2245 Method of Rockwell and
15、 Rockwell superficial hardness test 3 Classification Screwdrivers shall be divided into 4 types by the combination of each classification given in Table 1. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resa
16、le, 03/12/2007 09:17:17 MDTNo reproduction or networking permitted without license from IHS -,-,- 2 B 4609 : 1998 By the blade-to-handle assembly By the magnetic property Table 1 Classification Ordinary type, Through type Magnetic, Non-magnetic Basic size 4 Grade Screwdrivers shall be divided into 2
17、 grades of normal and heavy duty classes by the quality and dimensions. Tolerance 5 Shape and dimensions The shape and dimensions of screwdrivers shall be as given in Table 2. The shape of handle in the drawings is shown as an example. Heavy duty Basic size I Tolerance Table 2 Shape and dimensions o
18、f blade and handle Normal class Basic size 1 Tolerance J 4 . QI - Y 3 c Handle - -r Ordinary type Nominal size 4.5x 50 5.5x 75 6 X100 7 X E 5 8 x150 9 x200 10 x250 LO X300 1 (4) - 50 75 100 125 150 200 250 300 Blade Through Type unit: mm Tip 5.5 6 i 8 9 9 9 5.5 6 7 8 8 8 f 0 . 4 -0.2 b 1 0 . 2 f 0 .
19、 3 6 7 8 9 10 10 Notes (4) The dimension, I may be shortened according to the use. (5) The dimension, d indicates either the diameter for round types or the width across flats for angular types. Remarks : The blade-to-handle joining may be by a suitable means with- out pin. , Copyright Japanese Stan
20、dards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 09:17:17 MDTNo reproduction or networking permitted without license from IHS -,-,- 3 B 4609 : 1998 7x125 I 8x150 6 Material The material of screwdriver blades shall
21、 be SWRH62A of JIS G 3506, or those of which the quality is at least equal to the requirements of clause 7. 9x200 110x250 I 10x300 7 Quality Nominal size 4.550 5.575 6x100 7x125 8x150 9x200 10x250 7.1 Appearance For the appearance, screwdrivers shall be free from cracks and flaws, burrs, rust or oth
22、er defects harmful to use, and shall have a good level of finishing. 10x300 7.2 Function Nominal ball size 114 11/32 13/32 7.2.1 Torsional strength For the torsional strength, when tested by the method of 8.1, the blade-to-handle connection shall be secure, and there shall be no harmful chip or twis
23、t on the tip and no other harmful defect on each part. 15/32 7.2.2 Hardness The hardness over 5 mm from the tip end, when tested by the method of 8.2, shall be at least 52HRC. 7.2.3 Magnetic property Magnetic drivers, when tested by clause 8.3, shall sat- isfy the requirements given in Table 4. 8 Te
24、st method 8.1 Torsional strength For the torsional strength test of screwdrivers, engag- ing the tip into a slot of test bar given in Table 3, a torsional moment given in Table 3 shall be applied onto the handle. Table 3 Test bar and torsional moment Nominalsize I 45x50 I 55x75 1 6x100 S l o t size
25、to engage tip Torsional moment (N-rn) Width Depth I 1.510.1 I 1.5k0.1 12.5k0.15 Normal class 2.5 4.4 5.4 Heavy duty 3.4 5.4 7.4 9.8 12.3 16.2 19.6 19.6 Remarks : The hardness of the test bar slot shall be at least 58HRC. 8.2 of JIS Z 2245, using a testing machine specified in JIS B 7726. Hardness Th
26、e hardness of screwdrivers shall be measured by the test method 8.3 Magnetic property For the magnetic property, the screwdriver, held verti- cally, shall be capable of putting up a steel ball, specified in JIS B 1501, given in Table 4. In this case, the steel ball shall not bear magnetic force. Tab
27、le 4 Testing steel ball Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 09:17:17 MDTNo reproduction or networking permitted without license from IHS -,-,- STD*JIS B 4bOS-ENGL 1778 m 4733b08
28、 0550827 b74 m 4 B 4609 : 1998 9 Inspection Screwdrivers shall be inspected on the shape and dimensions and the quality, and shall conform with the specifications of clauses 5 and 7. 10 Designation Screwdrivers shall be designated by the number or title of this Standard, nominal size, type of assemb
29、ly, grade and magnetic property. Examples : JIS B 4609 4.5 x 50 Through type heavy duty Magnetic Screwdriver for slotted-head screws 4.5 x 50 Ordinary type normal class Non-magnetic 11 Marking Screwdrivers shall be marked with the following information on an appropriate place. a) Symbol for indicati
30、on of grade(6) b) Manufacturers name or abbreviation If is magnetic, abbreviation to so indicate(7) Notes (6) Symbol “N” for normal class, and “H” for heavy duty. (7) Marking example for magnetic : Magnetic type, Magnet, MAGNET, M Copyright Japanese Standards Association Provided by IHS under licens
31、e with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 09:17:17 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-JIS B 4bOS-ENGL 1778 q733bUA 0550828 500 1.6 5 B 4609 : 1998 8 125 150 175 150 175 200 I O - - Annex (normative) I type scr
32、ewdrivers-for slotted head screws 2.5 1 Scope This Annex specifies the I type screwdrivers. I 14 1 200 250 300 2 Normative references The following standards contain provisions which, through reference in this Annex, constitute provisions of this Annex. JIS B 1002 Dimensions of widths across flats J
33、IS B 1021 Tolerance system for threaded fasteners JIS B 7726 Rockwell and Rockwell superficial hardness testing machines JIS Z 2245 Method of Rockwell and Rockwell superficial hardness test 3 Classification B by the shape given in Annex Fig. 3. Screwdrivers shall be classified into 2 kinds of type A
34、 and type 4 Shape and dimensions 4.1 tion to the tip dimensions. Blade and handle The blade lengths are specified in Annex Table 1 in rela- Annex Table 1 Blade length of screwdrivers Unit: mm I I I I l i 2 1 12 I - 1 150 1 200 1 250 I I I ! I l I Copyright Japanese Standards Association Provided by
35、IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 09:17:17 MDTNo reproduction or networking permitted without license from IHS -,-,- STD*JIS B LibOS-ENGL 1778 m Li733b08 0550827 447 m 6 B 4609 : 1998 For tips of dimensions 1 mm x 5.5 mm and abo
36、ve, the screwdriver may have a hex- agonal driver near the handle (see Annex Fig. 2). The width across flats s and the respective tolerances shall be in conformity with JIS B 1002 and JIS B 1021. The dimension hmin is determined using the formula hmin = 0.5s A-A A Annex Fig. 1 Screwdriver P A- A Ann
37、ex Fig. 2 Hexagonal driver Remarks : Annex Figs. 1 and 2 are given as examples and are not intended to influence the manufacturers design. 4.2 Tips 4.2.1 Shape The shape of screwdriver tips is left to the choice of the manufac- turer. 4.2.2 Dimensions The dimensions shall be as given in Annex Table
38、2. Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 09:17:17 MDTNo reproduction or networking permitted without license from IHS -,-,- Q I Nominal thickness a 0.4 0.5 0.6 Nominal width b 2 2
39、.5 3 3 3.5 0.8 1 4 1.3 0.5 0.6 1.4 2.6 0.6 0.8 1.8 4.5 5.5 0.7 1 1 2.2 9.4 11.5 I 1.3 20.5 25.6 1.2 1.6 : I - 48 .-. 1.2 1 6.5 2.5 1.6 1 8 14 7 B 4609 : 1998 QI Type A Type B Annex Fig. 3 Kinds of screwdriver tips Annex Table 2 Screwdriver tips Unt: mm a Types A dB +0.06 -0.02 +0.06 -0.04 k0.06 Type
40、 A and type B Tolerance t2 1 Testtorque min. M N-m h14 1 1.5 I 2 1 4.5 1 87.5 Note (l) a15a Remarks : The minimum test torques M have been calculated using the following formula. M=ba2 N*m where, a : nominal thickness of tip b : nominal width of tip Copyright Japanese Standards Association Provided
41、by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 03/12/2007 09:17:17 MDTNo reproduction or networking permitted without license from IHS -,-,- STD*JIS B LibOS-ENGL 3998 4933b08 0550833 UT5 8 B 4609 : 1998 5 Material The blade shall be manufactured fro
42、m steel which when suitably heat- treated, satisfies the mechanical requirements and torque tests (see 6.2 and 7 . 1 ) . . . . 6 Quality 6 . 1 Appearance The material, shape and finish of the handle shall ensure use under normal conditions. The handle and the blade shall not be rough nor have faults
43、 which could cause accidents during use of the screwdriver. 6.2 Hardness Screwdriver blades shall be heat-treated along their full length. They shall have a minimum hardness of 50HRC over at least the length 3 x b from the tip of the blade. 6.3 Torsional strength For the torsional strength, when tes
44、ted by the method of 7.1, the blade-to-handle connection shall be secure, and there shall not be any harmful chip or permanent twist on the tip or any other defect harmful on the whole assembly. 7 Test method 7 . 1 Torque test 7 . 1 . 1 Torsional strength of blade Special equipment shall be used for
45、 the torque test. The test torque on the blade shall be progressively and steadily applied and increased to the indicated test torque M or until the blade breaks. The screwdriver tip shall sit fully in the test bar. Bending moments shall not arise during testing. The test bar (see Annex Fig. 4) shal
46、l have hardness at least 64HRC and have strength enough not to be deformed during test. Unit: mm a) For type A: For type B: T = tiH10 T = tzH13 b) A=aC9 Annex Fig. 4 Test bar Copyright Japanese Standards Association Provided by IHS under license with JSALicensee=IHS Employees/1111111001, User=Wing,
47、Bernie Not for Resale, 03/12/2007 09:17:17 MDTNo reproduction or networking permitted without license from IHS -,-,- STD-JIS B 4bOS-ENGL 1998 q33b08 0550832 T3L m Test torque of the blade M Nam 9. B 4609 : 1998 Test torque of the blade-to-handle connection M N.m 7.1.2 Torsional strength of blade-to-
48、handle connection The blade-to-handle connection shall withstand the test torque of the blade as shown in Annex Table 3. Remarks : The application of the test equipment to the handle should not modify the characteristics of the connection to be tested. MS26 M26 Annex Table 3 Test torque M M M30(2) Note (2) Where the screwdriver handle has a hole for use with a tee bar, the test torque for the blade-to-handle connection shall be greater tha