Bsi bs au 016a 1989 (1999)

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BRITISH STANDARD AUTOMOBILE SERIES

BS AU 1 6a:
1 989
(Superseding
BS AU 16:1963)

Specification for

Electrical cable
connectors
(1 7.5 A maximum
continuous rating)

UD C 62 1 . 31 5. 683: 62 9. 1 1 3)


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BS AU 16a:1989

Committees responsible for this
British Standard
The preparation of this British Standard was entrusted by the Automobile
Standards Committee (AUE/- ) to Technical Committee AUE/1 6, upon which
the following bodies were represented:
Association of Trailer Manufacturers
British Cable Makers’ Confederation
Department of Trade and Industry

Department of Transport (Highways)
Institution of Electronic and Radio Engineers
National Caravan Council Ltd.
Society of Motor Manufacturers and Traders Ltd.

This British Standard, having
been prepared under the
direction of the Automobile
Standards Committee,
was published under the
authority of the Board of BSI
and comes into effect on
31 March 1 989
© BSI 1 2- 1 999

The following BSI references
relate to the work on this
standard:
Committee reference AUE/1 6
Draft for comment 86/70282 DC

ISBN 0 580 16652 X

Amendments issued since publication
Amd. No.

Date of issue

Comments

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BS AU 16a:1989

Contents
Page
Committees responsib le
Foreword

ii

1

Scope

1

2

Bullet type connectors

1

3

Tube type connectors

2

4

Insulating sleeves

2

5

Loading

2

6

C onductivity

3

7

C orrosion

3

Figure 1 — Soldered b ullet type connector

1

Figure 2 — C rimped b ullet type connector

2

Figure 3 — Tube type connector

3

Figure 4 — Insulating sleeve with tube type connector fitted

3

Figure 5 — Typical multiple tube type connector assemb lies

4

Pub lication referred to

© BSI 1 2 - 1 999

Inside front cover

Inside back cover

i


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BS AU 1 6a: 1 989

Fore word

This British Standard has been prepared under the direction of the Automobile
Standards Committee. It combines and metricates the requirements of
BS AU 1 6: 1 963 and BS AU 39: 1 964 which were based on data sheets SMMT 1 41
and 1 48 respectively and are now withdrawn. It also makes provision for a
crimped version of the bullet type connector as an alternative to the soldered type.
A British Standard does not purport to include all the necessary provisions of a
contract. Users of British Standards are responsible for their correct application.
C omp liance with a British S tand ard d oe s no t of itse lf confe r immunity
from le gal ob ligatio ns.

S ummary of p age s

This document comprises a front cover, an inside front cover, pages i and ii,
pages 1 to 4, an inside back cover and a back cover.
This standard has been updated (see copyright date) and may have had
amendments incorporated. This will be indicated in the amendment table on the
inside front cover.

ii

© BSI 1 2- 1 999


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BS AU 1 6a: 1 989

1 S cop e

2 Bulle t typ e conne ctors

This British Standard specifies requirements for

2.1

the following electrical cable connectors:

are retained on electrical leads b y soldering shall be

a) a b ullet type connector which is retained on the

The dimensions of bullet type connectors which

as shown in Figure 1 .

electrical conductor either by soldering or by

2.2

crimping;

are retained on electrical leads b y crimping shall b e

b) a tub e type connector and an insulating sleeve

The dimensions of bullet type connectors which

as shown in Figure 2 .

which are suitable for a maximum continuous

2.3

rating of 1 7. 5 A.

from brass, after which they shall b e coated with tin,

NO TE

The title of the pub lication referred to in this standard is

given on the inside back cover.

Bullet type connectors shall be manufactured

and shall meet the requirements of clauses 5 , 6
and 7 .

Figure 1 — S old e re d b ulle t typ e conne ctor

© BSI 1 2 - 1 999

1


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BS AU 1 6a: 1 989

Figure 2 — C rimp e d b ulle t typ e conne ctor

3 Tub e typ e conne ctors

NO TE

Typical multiple tub e type connector assemblies are

shown in Figure 5 .

3.1

The dimensions of tub e type connectors shall b e

as shown in Figure 3.
3.2

The material from which tube type connectors

5 Loading
5.1

When bullet type connectors are inserted into

are made and the finish shall meet the

each end of a tub e type connector, the initial

requirements of clauses 5 , 6 and 7 .

insertion force of each bullet type connector shall be:

4 Insulating sle eve s
4.1

The dimensions of insulating sleeves shall be as

shown in Figure 4.
4.2

The material used for insulating sleeves shall b e

of sufficient elasticity to grip the bullet type
connector and meet the loading requirements
of 5 . 1 a) .
4.3

a) not more than 90 N with the insulating sleeve
fitted to the tube type connector;
b ) not less than 45 N with the insulating sleeve
removed from the tube type connector.
5.2

After 1 2 reconnections, the withdrawal force of

each bullet type connector, with the insulating
sleeve removed from the tube type connector, shall
b e not less than 2 2 . 5 N.

Multiple tub e type connector assemblies shall

meet the requirements of 5 . 1 a) .

2

© BSI 1 2 - 1 999


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BS AU 16a:1989

Figure 3 — Tube type connector

Figure 4 — Insulating sleeve with tube type connector fitted

6 Conductivity

7 Corrosion

C onductivity s hall b e tes ted b y p as sing a 1 0 A

When an as semb ly consis ting of b ullet typ e

current through an as semb ly of two b ullet typ e

connectors inserted into each end of a tub e typ e

connectors ins erted into each end of a tub e typ e

connector without an ins ulating s leeve is s ub j ected

connector without an insulating s leeve and noting

to the s alt s p ray tes t describ ed in BS 5 466- 1 , for

the voltage readings on a millivoltmeter connected

two 2 4 h p eriods , each followed b y 1 h of drying at

to the exp os ed skirts of each b ullet typ e connector.

room temp erature, the ass emb ly s hall, up on

The difference in the voltage readings taken after

comp letion, meet the requirements of claus e

6.

initial ins ertion of the b ullet typ e connectors and
again after 1 2 withdrawals of each b ullet typ e
connector s hall not exceed 5 mV.

© BS I 1 2 - 1 99 9

3


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Figure 5 — Typical multiple tube type connector assemblies

BS AU 16a:1989

4
© BSI 1 2 - 1 999


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BS AU 16a:1989

Publication referred to
BS 5 466,

BS 5 466- 1 ,

Methods for corrosion testing of metallic coatings.
Neutral salt spray test (NSS test).

© BS I 1 2 - 1 99 9


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BS AU 16a:
1989

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