List of British Standards—continued
New Issues
BS 4733: 1971 Characteristics of signal generators. M
BS 4734: 1971 The performance of amplitude modulated signal
generators. M
BS 4735: 1971 Method of test for ignitability and self
extinguishing characteristics of plastics and rubber cellulose
materials when subjected to a small source of ignition. M
BS 4736: 1971 Method of test for the determination of dimen-
sional changes of fabrics by cold water immersion. M
BS 4737: 1971 Intruder alarm systems in buildings. M
BS 4738: 1971 Enamelled copper conductor cores with an addi-
tional heat-bonding coating—
4738: Part 1: 1971 Round wire. M
BS 4742: Hydraulic equipment for agricultural
machinery—
4742: Part 1: 1971 Cylinders. M
BS 6485: 1971 PVC-covered conductors for overhead power
lines. M
BS 6862: - Cables for vehicles—
6862: Part 1: 1971 Cables with copper conductors. M
Revised standards
BS 192: 1971 Open-ended wrenches (not including BA sizes).
M+I
BS 65 and 540: Clay drain and sewer pipes including
surface water pipes and fittings-
65 and 540: Part 1: 1971 Pipes and fittings. M
BS 368: 1971 Precast concrete flags. M
BS 481: Industrial wire mesh-
481: Part 1: 1971 Woven annealed wire cloth with square
apertures, plain or twilled weave. M
BS 539: 1971 Dimensions of fittings for use with clay drain
and sewer pipes. M
BS 602 and 1085: 1970 Lead and alloy pipes for other than
chemical purposes. M
BS 680: Roofing slates-
680: Part 2: 1971 Metric units. M
BS 850: 1971 Special requirements for cinematograph film
designated as “safety film”. M
BS 903: Methods of testing vulcanised rubber-
903: Part A1: 1971 Determination of density. M
903: Part A2: 1971 Determination of stress/strain properties.
M
BS 1016: Methods for the analysis and testing of coal
and coke-
1016: Part 9: 1971 Phosphorus in coal and coke. M
BS 1151: 1971 Form of time and wages sheet and pay packet
for the building and civil engineering contracting indus-
tries. M
BS 1361: 1971 Cartridge fuses for a.c. circuits in domestic and
similar premises. M
BS 1440: 1971 Endless V-belt drives sections ‘Y’, ‘Z’, ‘A’, ‘B’,
‘C’, and ‘D’. M
BS 1692: 1971 Gin blocks. M
BS 1877: Domestic bedding-
1877: Part 1: 1971 Spring-interior mattresses for adult use
(performance and construction). M
BS 2011: Methods for the environmental testing of elec-
tronic components and electronic equipment-
2011: Part 2 Tests: Test Ca: 1971 Damp heat-steady state.
M
BS 2087: 1971 Preservative textile treatments. M
BS 2550: 1971 Lead-acid traction batteries for battery electric
vehicles and trucks. M
BS 2655 Lifts, escalators, passenger conveyors and pater-
nosters-
2655: Part 3: 1971 Arrangements of standard electric lifts. M
BS 2999/32 to 43: 1971 Essential oils. M
BS 3173: 1971 Non-pocketed or open type spring centre units
for domestic mattresses. M
BS 3405: 1971 Simplified methods for measurement of grit and
dust emission. M

List of British Standards—continued
Revised standards
BS 3432: 1971 Method for the determination of the grammage
(basis weight) of paper and board. M
BS 3456: The testing and approval of household electrical
appliances-
3456: Part 2: Particular requirements-
Section 2.2: 1971 Electrical vacuum cleaners and water
suction cleaning appliances. M
3456: Part 2: Particular requirements-
Section 2.20: 1971 Electric floor polishers. M
BS 3641: Symbols for machine tools-
3641: Part 1: 1971 General symbols. M
BS 3900: Methods of test for paints-
3900: Part C3: 1971 Hard-drying time. M
3900: Part F3: 1971 Resistance to artificial weathering (en-
closed carbon arc). M
BS 4021: 1971 Flexible polyurethane foam sheeting for use in
laminates. M
BS 4040: 1971 Petrol (gasoline) for motor vehicles. M
Amendments
No./AMD
BS 187: Calcium silicate (sandlime and flintlime)
bricks-
187: Part 2: 1970 Metric units. 1/695
BS 449: The use of structural steel in building-
449: Part 1: 1970 Imperial units 2/660
BS 476: Part 1: 1953 Fire tests on building materials
and structures 2/686
BS 1442: 1969 Galvanized mild steel wire for armour-
ing cables 1/700
BS 1449: Stainless and heat resisting plate, sheet,
and strip-
1449: Part 4: 1967 Steel plate, sheet, and strip 2/708
BS 1769: 1951 Unified black hexagon bolts, screws,
nuts (UNC and UNF threads). Heavy series 6/692
BS 1983: Chucks for machine tools and portable
power tools-
1983: Part 1: 1969 Tool holding chucks 1/706
BS 1990: 1953 Wood poles for overhead lines (power
and telecommunication lines) 3/697
BS 2006: 1966 Metal collapsible tubes 1/696
BS 2497: A reference zero for the calibration of
pure-tone audiometers-
2497: Part 2: 1969 Data for certain earphones used
in commercial practice 1/705
BS 3116: Automatic fire alarm systems in build-
ings-
3116: Part 1: 1970 Heat sensitive (point) detectors 1/691
BS 3262: Road marking materials-
3262: Part 1: 1960 Hot-applied thermoplastic
materials (superimposed type) 3/699
BS 3755: 1964 Methods of test for the assessment of
odour from packaging materials used for foodstuffs 1/684
BS 3861: Electrical safety of office machines-
3861: Part 1: 1965 General requirements and tests
for earthed equipment 4/693
3861: Part 2: 1968 Requirements and tests for
machines presenting special hazards 3/694
BS 4278: 1968 Eyebolts for lifting purposes 1/687
BS 4441: Percussive rock-drilling bits, rods and
stems-
4441: Part 1: 1969 Taper fitting detachable bits and
rods 1/707
BS 4514: 1969 Unplasticised PVC soil and ventilating
pipe, fittings and accessories 1/712
BS 4548: 1970 Synchronous belt drives 1/698
BS 4574: 1970 Recommendation for the determination
of the ink absorbency of paper and board by use of
K and N ink 1/702
BS 4576: Unplasticised PVC rainwater goods-
4576: Part 1: 1970 Half-round gutters and circular
pipe 1/688
BS 4581: 1970 Dimensions of flanges for the mounting
of plain grinding wheels 1/701