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है”ह”ह
IS 3727 (1966): Wing Screws [PGD 31: Bolts, Nuts andFasteners Accessories]
. . .
7
IS:372791966
Indian Standard
SPECIFICATION FOR WING SCREWS
( Third’ Reprint JANUARY 1990 )
UDC 621.882.218
@ Copyright 1966
BUREAU OF INDIAN STANDARDS UNAK BHAVAN, 9 BAHADUR SHAH ZAFAR MAW -
NEW DELHI 110002
Or2 _. , Novemk 1966
IS:3727-1!%6
Indian Standard
SPECIFICATION FOR WING SCREWS
Screw Threads and Fasteners Sectional Committee, EDC 27
Chaimn
SEBI R. KBDBHHAXWTZ
RCpCSC&g
Rcsearch, De,signs & Standards Organization ( Ministry of Railways )
SEBI R. L. VOHBA ( Attarnatr to Shri R. Krishnamurti )
CAL J. P. A~HONY SEBI R. M. API!=
.
MAJ I. J. S. BASSI
Smu D. R. MAUK ( Alternate ) SEBI B. S. BEAC+OWALIA Smtr S. K. BHATIA DEPUTY DIBE~TOX OF MARINE
ENCXNXEBIN~ DB V. M. GEATA~E
Srrar B. R. SAXPATEZKUYAEAN _ _^
Ministry of Defence ( DGI ) Machine Tool Prototype Factory, Directorate General
of Ordnance Factories, Amhernath Directorate of Inspection (Vehicles ), Ministry of
Defence ( DGI )
Tata Engineering & Locomotive Co Ltd, Jamshcdpur Heavy Elecrricals ( India ) Ltd, Bhogal Indian Navy
Hindustan Aeronautics Ltd, Bangalore ( Alternate )
SHBI B: C~OVINDARAJ Indian Telephone Industries Ltd, Bangalore SEBI D. A. CRELLIAB ( A1ternut.e )
SHBI N. V. HEBALKAB Kirloskar Brothers Ltd, Kirloskarvadi CAL R. JANABDHANAX Ministry of Defence ( R & D )
S-1 B. C. TEADANI ( Alternate ) SHRI B. D. KAPUB All India Manufacturers’ Organization, Bomhay SHBI V. KAPUB Guest, Keen, Williams, Ltd, Calcutta
SEBI DILIP PAUL ( Altmats ) Sirm KABTAB SINGE Directorate General of Supplies & Disposals ( Ministry
of Works & Housing ) SHBI S. S. THAKUB (Alternate)
DE S. P. LQTEICA The Institution of Engineers ( India ), Calcutta SEBI D. MAJU~~DAB Office of the Development Commissioner for Small
Scale Industries ( Ministry of Industry & SUPPlY)
SHBI G. B. JAKETIA ( Altarnate ) Smu S. D. MAJUXDAB National Test House, Calcutta SEBI R. N. MALXJCK Directorate General of Technical Development,
( Minisiry of Industry & Supply ) SHBI R. S. MATHUB Engineering Association of India, Calcutta
Saar I. M. SAKEUJA ( Altemak )
( Continued on page 7 )
BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW’DELHI 110002
IS t 3727 - 1966
Indian Standard
SPECIFICATION FOR WING SCREWS
0. FOREWORD
0.1 This Indian Standard was adopted by the Indian Standards Institution oti 1 September 1966, after the draft finalized by the Screw Threads and Fasteners Sectional Committee had been approved by the Mechanical Engineering Division Council.
0.2 Wing screws are extensive1 y used in light assemblies where convenience of hand tightening is required. They are particularly suited to applica- tions where frequent adjustment or replacement of screws is required. The subject of wing nuts has already been covered in IS : 2636-1964*.
0.3 This standard deals with dimensions and materials for wing screws only while reference has been made to IS : 1367-19611_ which gives details of general requirement for more common types of threaded fasteners.
0.4 In the preparation of this standard, assistance has’ been derived from DIN 316-1956 ‘ Flugelschrauben M2 bis M24 ( Wing screws, M2 to M24 ) ’ issued by the Deutscher Normenausschuss.
0;~ For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, express- ing the result of a test, shall be rounded off in accordance with IS : 2-1960$. The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.
1. SCOPE
I.1 This standard specifies the requirements for wing screws for sizes M2 to M24.
2. MECHANICAL PROPERTIES
2.1 If made of steel, the wing screws conforming to this standard, shall have mechanical properties corresponding to symbol 4D of IS : 1367-19617.
*Specification for wing nuts.
tTechnica1 supply conditions for threaded fasteners.
$Rules for rounding off numerical values ( r&red).
2
-
Ist3727-1966
2.2 If made of brass, bronze or aluminium, the wing screws shall have a minimum tensile strength of 30 kgf/mm%.
3. GRADE
3.1 The wing screws covered in this standard shall conform to Black ‘B? Grade specified in IS : 1367-1961*.
4. DESIGNATION
4.1 The wing screws covered in this standard shall be designated as follows.
4.1.1 A wing screw of nominal size, M6 length 10 mm of black grade and of steel having mechanical properties corresponding to symbol 4D, shall be designated as
Wing Screw M6 x 10 IS : 3727 -B-4-D
4.1.2 When wing screws are made of brass, aluminium, etc, the symbol 4D shall be replaced by the words ‘ brass ‘, ‘ aluminium ’ etc, as appropriate.
5. DIMENSIONS
5.1 The screw threads dimensions of the wing screws shall have coarse pitches with the normal class of tolerance specified in IS : 1362-1962t.
5.2 The other dimensions of the wing screws shall be as given in Table: 1.
5.3 The length-diameter combination of wing screws shall be as given in Table ‘2.
6. GENERAL REQUIREMENTS
6.1 The wing‘screws conforming to this standard, shall comply with the requirements of IS : 1367-1961*, SO far as manufacture, workmanship, tolerances, marking, packing and tests are concerned.
*Technical supply conditions for threaded fasteners. tDimensions for screw threads for general purposes (diameter range 1.6 to 39 mm )
( retied ).
3
d M2 M2.5 and M3 M4 M5 M6 M8 Ml0 Ml2 Ml6 M20 M24
Nom b, (jsl6) Maw
Min
ba Nom
(NONom
J ($6)
I
Max Min
fi Nom g, (js16) ( llfax
1 Min
‘LJI
h (j-16, I”~ h .ax
1 Afin
5 6 5.38 6.38 4.62 5.62
4 5
12 16 12.55 16.55 11.45 15.45
1 I.2 1.30 1.50 0.70 0.90
1.2 l-6
6 8 6.38 H.45 5.62 7.55
o-9 1.2
3 4
2 2.5
* *
0.5 o-5
1.2 1.6
8 10 12 16 20 23 28 36 8.45 10.45 12.55 16.55 20.65 23.65 28.65 36.80 7.55 9.55 11.45 15.45 19.35 22.35 27*35 35.20
6 8 10 12 16 19 22 28
20 25 32 40 L&*65 25.65 32.80 40.80 %80 ti.95 322.95 $0 19.35 24.35 31.20 39.20 49.20 63.05 71.05 88.90
1.6 l-90 g.30 2,5 2.80 i.30 t.38 z.38 6 6-38 :.45 1.30 l-70 2.20 2 70 3.62 4.62 5.62 6.55
2 2.5 3 4 5 6 7 9
45 45.80 44.20
36
112 113.10 110.90
z.45 8.55
11
10 12 16 20 25 32 36 45 10.45 12.55 9.55 11.45
;;*.5; 20.65 25.65 32.80 36.80 45.80 cf.95 * 19.35 24.35 31.20 35.20 44.20 53.05
1.5 1.8 2.5 3 4 4 4.5 6 7
5 6 8 10 12 14 16 20 24
3 4 5. 6 8 10 11 14 18
* * * + 1 1 1.2 l-6 2.5
o-5 0.5 1 1 1.2 l-2 l-6 2 3 P
2 2.5 3 4 5 6 7 9 11
NOTE - For Dimensions ‘1’ see Table 2.
*Should be radiused.
1 (isl6) .%I
3
4
6
8
10
12 Q,
14
16
20
25
30
40
50
60
80
100
1 MUX
1 _Ili?l
3.5 2.5
4.5 3.5 tj.j 5.5
8.5 7.5
‘ia. 9.5
124 11.5
14.5 13.5
16.5 15.5
20.5 19.5
25.5 24,s
30.5 29.5
41.0 39.0
51.0 49.0
61.0 59.0
81.0 79.0
101.0 99.0
TABLE 2 LENGTH-DIAMETER COMBINATIONS FOR WING SCREWS
( Clause 5.3 )
All dimensions in mtllimetres.
112 M2.5 M3 M4
x - - -
X X X -
X X X X
X X X X
X X X X
X X X X - - - X - - - -
- - - -
- - - -
- - - -
- - - -
- - - -
_ - -_ -
- - - -
- - - -
NOTE 1 - Sizes marked ‘ X ’ are preferred.
M5
-
-
X
X
X
X
X
X
X -
-
-
-
-
-
-
.M6 ME MI0 Ml2 Ml6 M20 M24
-
-
-
X
X
X
X
X
X
X
-
-
-
-
-
-
- - - -
-
-
_ - - - - - - - _ - - -
X
X
X
X
X
X
X -
-
- - -
- -
X
X
X
X
X
X -
-
- - -
_ - - - - - - - )( - - -
x _-_ -
X x - - X x - - X X x - X X X X
X x - - - X X X - - X X - - - X
NOTE 2 - The maximum and minimum dimensions for length have been rounded off suitably.
IS:372711966
SEBI P. S. NA~ASUNDABAX Directorate of Technical Development & Production ( Air ) ( Ministry of Dcfence )
SE= PBEY PEAKASH National Physical Laboratory ( CSIR ). New Delhi SEBI P. C. JAIN ( Alkmate)
S~st S. RAXAYBITHAY Civil Aviation Directorate ( Ministry of Transport) Sasr P. R. CHANDBASEKHAB ( Al&mate)
SHBI T. S. S. RAO The Cycle Manufacturers’ Association of India, Calcutta
SHBI J. C. BBADLEY ( Affemak ) SEBI V. A. S. &TTY Hindustan Machine Tools Ltd, Bangalore
SEBI M. RANQASHAI ( At&m& ) SHEI S. SHXVANA~A SWAM New Government Electric Factory, Bangalore
SHBIH.F. WA~N~~(&~VIU~C) SHBI M. P. T~IVEDI Jyoti Ltd, Baroda SNBI D. v. VIaMANX Industrial Fasteners Association of India, Calcutta SEBI M. v. PATAKKAB, Director General, IS1 ( Ex-oJicio~h4cmber)
Director ( Mech Engg )
Seiretary S’EBI S. CRANDBABEKHABAN
Deputy Director ( Mcch Engg), ISI
Bolts and Nuts for General Engineering Purposes Subcommittee, EDC 27 : 3
colwnlcr CQL R. JANABDHANAY Ministry of Defence ( R & D )
MOllbarS SEBI B. C. THADANI { Altsrnak to
Co1 R. Janardhanam ) SIIBI S. K. BHATIA Heavy Electricals ( India ) Ltd, Bhopal SEEI HABDAS SINQH Research, . Designs & Standards Organization
( Muustry of Railways ) SERI V. KAPTJB Gurst, Keen, Williams, Ltd, Calcutta
SHRI DILIP PAUL ( &6mal8) REIBEBENTATIVB Engineering Association of India, Calcutta RIPPBSENTATIVB Hindustan Macliine Tools Ltd, Bangalore SEBI R. S. THAPA Forbes Forbes Campbell & Co Ltd. Bombay
SHBI J. P. PALKEIWALA ( Alfcmute)
7
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