IS 451: Technical Supply Conditions for Wood Screws

8 Pages·1999·1 MB·English

by  Bureau of Indian Standards

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timely dissemination of this information in an accurate manner to the public.
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IS 451 (1999): Technical Supply Conditions for Wood Screws
[PGD 31: Bolts, Nuts and Fasteners Accessories]
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Satyanarayan Gangaram Pitroda
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“Knowledge is such a treasure which cannot be stolen”

IS451:lQQQ

Indian Standard
LACINHCET YLPPUS SNOITIDNOC ROF
WOOD SWERCS
(
Third Revision )
ICS 2 1.060.10

0 BIS 1999
BUREAU OF INDIAN STANDARDS
MANAK BHAVAN, 9 BAHADUR SHAH ZAFARMARG
NEW DELH I 110002
January 1999
Price Group 1
,stloB Nuts and srenetsaF seirosseccA lanoitceS ,eettimmoC ML 14
FOREWORD
sihT naidnI dradnatS drihT( )noisiveR was yllanigiro dehsilbup ni 1961 gnirevoc doow swercs htiw tnereffid daeh
shapes. nI its tsrif noisiver ni 1972, eht epocs fo eht standard was detcirtser ot revoc ylno lacinhcet ylppus snoitidnoc
elihw eht snoitacificeps rof doow swercs htiw tnereffid daeh shapes erew derevoc ni eht gniwollof lanoitidda standards:
SI 6736 : 1972 dettolS desiar knusretnuoc daeh doow swercs
SI 6739 : 1972 dettolS dnuor daeh doow swercs
SI 6760 : 1972 dettolS knusretnuoc daeh doow swercs
nI this ehtnoisiver standard has neeb yllairotidedeifidom and ecnerefer ot rehto standards .detadpu oslA snoitalupits
gnitaler ot yticirtnecnoc fo daeh htiw shank and snoitisop fo tols htiw tcepser ot daeh evah neeb deteled ecnis eht
emas era derevoc ni eht laudividni tcudorp standards no doow .swercs
roF eht esoprup fo gnidiced rehtehw a ralucitrap tnemeriuqer fo this standard is deilpmoc ,htiw eht lanif ,eulav
devresbo ro ,detaluclac gnisserpxe eht tluser fo a tset fo ,sisylana shall eb dednuor ffo ni ecnadrocca htiw SI 2 : 1960
seluR‘ rof gnidnuor ffo laeiremun seulav ( revised )‘. ehT rebmun fo tnacifingis secalp deniater ni eht dednuor ffo
eulav dluohs eb eht emas as that fo deificepseht eulav ni this standard.
IS 451 : 1999
Indian Standard
LACINHCET YLPPUS SNOITIDNOC ROF
DOOW SWERCS
(
Third Revision )
1 SCOPE Table 1 Depth of Threads
sihT standard srevoc eht lacinhcet ylppus snoitidnoc ( Clause 3.2 )
rof doow .swercs
Screw Number Minimum Depth of Thread
2 SECNEREJFER (Screw Designation) (mm)
ehT gniwollof standards niatnoc snoisivorp hcihw 0 0.20
hguorht ecnerefer ni this ,txet etutitsnoc noisivorp fo 1 0.23
2 0.25
this standard. At emit~eht fo ,noitacilbup eht snoitide
detacidni erew .dilav llA standards era tcejbus ot 3 0.30
,noisiver and seitrap ot stnemeerga desab no this 4 0.33
standard era degaruocne ot etagitsevni eht ytilibissop 5 0.41
fo gniylppa eht tsom tnecer snoitide fo eht standards
6 0.46
detacidni :woleb 7 0.51
8 0.56
IS No. eltiT
9 0.61
1812 : 1982 nobraC leets eriw rof erutcafunam fo 10 0.66
doow swercs ( second revision ) 12 0.76
4170: 1%7 Brass sdor rof lareneg gnireenigne 14 0.86
16 0.96
sesoprup
18 1.04
4413 : 1981 Brass seriw rof lareneg gnireenigne
20 1.14
sesoprup tsrif( revision ) 24 1.35
28 1.55
3 DIMENSIONS AND TOLERANCES 32 1.75
3.1 ehT snoisnemid fo eht deoow wercs shall mrofnoc
ot esoht nevig ni eht evitcepser tcudorp standards. 5.2 ehT doow swercs shall eb ylnaelc dehsinif and

eerf morf .srrub
3.2 ehT htped fo sdaerht derusaem at a ecnatsid fo
1.5 ot 2 semit eht lanimon retemaid morf eht ,tniop shall 6 SI’NEMERIUQERLAREIJFG
ton eb less than eht seulav deificeps ni elbaT 1.
6.1 ehT dedaerht noitrop fo eht swercs shall eb demrof
3.3 ehT ecnarelot no lanimon htgnel fo eht doow swercs yb evissergorp noitcuder fo eht toor retemaid ot niatbo
shall eb js17. a mrofinu .repat
4 LAIRETAM 6.2 ehT swercs shall eb telmig detniop and eht dedulcni
elgna fo eht telmig tniop shall eb neewteb 28 ot 44
4.1 swercsdooW shall eb derutcafunam morf lairetam .seerged ehT daerht mrof tuohguorht eht htgnel fo eht
gnimrofnoc ot SI 1812. swercs shall eb hcus that ti lliw evig eht mumixam etib
otni eht doow nehw eht wercs is detator and gnorts
4.2 nI esac fo doow swercs edam fo brass, eht lairetam
hguone ot tneverp noitrotsid fo .sdaerht
shall mrofnoc ot edarg 73nZuC fo SI 44 13 ro edarg
nZuC 40 fo SI 4 170. 6.3 sdaerhT shall eb raelc and llew .denifed At eht
dne fo eht dedaerht noitrop tseraen ot eht ,daeh eht
5 FINESH
toor fo eht sdaerht shall tuonur ot eb lanimon
5.1 ehT doow swercs shall eb deilppus htiw thgirb retemaid nihtiw a ecnatsid ton gnideecxe -eno
fles ruoloc hsinif unless esiwrehto deificeps yb eht retrauq fo eht htgnel fo eht dedaerht .noitrop
.resahcrup

1
Is 451 : 1999
7 INSPECTION AND ACCEPTANCE yna eno ro erom fo eht scitsiretcarahc shall eb
deredisnoc as a evitcefed doow .wercs
7.1 Lot
7.4 Criterion for Confimnity
nI yna ,tnemngisnoc all doow swercs fo eht emas wercs
rebmun and derutcafunam at eht emas emit shall eb ehT tol shall eb deredisnoc as gnimrofnoc ot eht
depuorg rehtegot ot etutitsnoc a .tol stnemeriuqer fo this standard fi eht rebmun fo evitcefed
doow swercs gnoma esoht detset seod ton deecxe eht
7.2 Selection of Wood Screws gnidnopserroc rebmun nevig ni 1oc 3 fo elbaT 2 -rehto
7.2.1 ehT rebmun fo doow swercs ot eb detceles morf esiw ti shall eb deredisnoc as ton gnimrofnoc ot eht
a tol shall dneped nopu its ezis and shall eb ni stnemeriuqer fo this standard.
ecnadrocca htiw 1oc 1 and 2 fo elbaT 2.
8 PACKING
7.2.2 esehT doow swercs shall eb detceles at modnar
dooW swercs shall eb detaoc htiw a elbatius rust
muminimaot~~sexobehtfotnecrep01tsaeltamorf
evitneverp and shall eb dekcap ni draobdrac .sexob
fo ,eerht lauqe rebmun fo swercs gnieb detceles morf
dooW swercs fo 25 mm htgnel and woleb shall eb
hcae .xob
dekcap ni rebmun fo 200 rep xob and all doow swercs
fo htgnel evoba 25 mm shall eb dekcap ni srebmun fo
Table2 Sample Size and Criterion for Conformity
100 rep .xob
(Clauses7.2.1 and7.4)
GNIKRAMB
9.1 ehT lebal fo laudividni sexob gniniatnoc eht doow
Lot Size S8mple Size Permissible Nuniber
swercs shall eb dekram htiw eht gniwollof :noitamrofni
of Defective Wood
Screws
~a) s’rerutcafunaM eman ro ;kram-edart
)1( )2(
(3)
)b ,epL? wercs rebmun and htgnel fo doow
up to 150 13 1 ;swercs and
151 to 300 20 2
)c ytitnauQ deniatnoc ni eht .xob
301 to 500 22 3
501 to 1 000 50 5 9.2 BIS Certification Mark
1 001 to 3 000 80 7
ehT tcudorp gnimrofnoc ot this standard yam osla eb
3 001 to 10 000 125 10
dekram htiw eht dradnatS Mark. reverehW ti is ton
10 001 and above ioo 14
elbissop ot tup eht dradnatS Mark no eht ,tcudorp
NOTE - The sampling plan given here is such that lots ti yam eb dekram eht-no .gnigakcap
with 4 percent or less defectives would be accepted most
of the times. 9.2.1 ehT esu fo eht dradnatS Mark is denrevog yb
eht snoisivorp fo Bureau of Indian Standards, Act,
1986 and eht seluR and snoitaluger edam .rednuereht
7.3 Number of Test
ehT sliated fo snoitidnoc rednu hcihw eht ecnecil rof
llA doow swercs detceles as rep 7.2 shall eb dekcehc eht esu fo dradnatS Mark yam eb detnarg ot
rof ytimrofnoc ot all stnemeriuqer fo eht standard. ynA srerutcafunam ro srecudorp yam eb deniatbo morf eht
doow wercs hcihw sliaf ot yfsitas eht stnemeriuqer fo uaeruB fo naidnI Standards.
Bureau of Indian Standards
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Bureau oJIndian StandardsAct,
tnempoleved fo eht seitivitca fo ,noitazidradnats gnikram and ytilauq noitacifitrec fo sdoog and gnidnetta ot
detcennoc srettam ni eht .yrtnuoc
Copyright
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thgirypoc eb desserdda ot eht rotceriD ,)snoitacilbuP{ .SIB
Review of Indian Standards
‘,
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,
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i. fo SIB‘ ’koobdnaH and sdradnatS‘ : ylhtnoM .’snoitiddA
..
sihT naidnI dradnatS has neeb depoleved morf toD : oN DML 14 ( 5 164 .)
Amendments Issued Since Publication
dnemA .oN etaD fo eussI txeT detceffA
BUREAU OF INDIAN STANDARDS
:sretrauqdaeH

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