7/25/2019 BS 957-2008

1/11

NO CO P YI NG WJTH OUT BSI PER AllSSJO N E X CEPTA S P E R MITl'ED

B Y

COPY UG H T L A W

British S tandards

CS l

7 .

040.;JO

f f

7/25/2019 BS 957-2008

2/11

Te

xt a:ffected

md.

no

. D

ate

Amendm

ents since publication

Publicati

on history

llS 7

(

in

dt

1941 (renumbe

re das

DS 9

57- 1

0

69

)

llS

957-2

mili.)

oe p

ublshed

1 96

9

D S 957

{in

clt aud metrlc)

e d i r . i . ( > t l )

publlshed 30 Sep

ember 2008

11te follow ng

DS

I references relate O lll w

c

rk ou

thts

s t A . -td

M

l:

Cemmluee TDW/4

rce

oon

t" K u

t08/30178000

e nst

o

Publ

isbin

g a.nd c

opyrigbt information

1'he BSI t. .

" \ > t ) ) '

rig

hLnou

ce displa yed ths doeumeru " " l1e

1

llte

doeumera was l a . ; ; c .

tssue

d,

BS 957:2008

7/25/2019 BS 957-2008

3/11

of pages

'Ths document oomprses

cover

, an nsde

cov

er,

p

ages i

u

, pages an m

sid

e

ba

ck cover and

b

ack

Ann

exes

Anne

x

A

(nforma

t fve

) Recommended

co

m

bnaton

s

of

blad

es

List of

ta

bles

Table metric units

1

Tab

le 2

-

Hardness test

-

inch unns

1

Table

T

ol

erances on

thckness

of blades- metri

c

units

Table

4 Tolerances on thckness of

blades

- inch units

Table A.I - Combination ofbL,des-

un

its

Tab

le A.2 -

Com

bnaton

o

f

bla

dcs

c-In

ch

Sco

p

e

1

2 refere

n

ces

1

s

General

1

4 Mazerial

ofblades 1

5

Dmensons of blades

6 Finish

7

8

Sheath

s

9

1 Protection aganst climatic co

n

ditio

n

s

BS 957:2008

7/25/2019 BS 957-2008

4/11

Contractual and

l

egal

c

onsiderations

'Th

s purport n

cl

ude provsions

co

n

traer

,

respo

nsble

ts

co

rre

ct

Compliance

a

Brltlsh Standard

cannot confcr

from l

e

gal o

bligatio

ns.

lnfonnation about this

doeu:ment

This B

rtsh St

an

clarcl

has been r

evsed to

hring

it

up to date

.

Pr

e

s

enta

ti

onal

con

ve

ntions

The

of

t

his are pr

ese

nted romn (

.c

.

upright)

IL \ requrements inse

nten

ce

s

a.uxi . l i ru)v e r b is

"

s

hall" .

Cmnmcntary, and g m u J> fll

> i f

< r

rm

at

nc is

smaer f : J / T K

,

and

does

>w t

S

upe

rsession

'Th

s

Brtsh

St

an

clarcl

sup

ers

edes B

S

957

-1 :1

94

1

and B

S

957-2

:

1969

,

w

bich ar

e

wthdrawn,

Publislrlng

lnformatio

n

This

Br

tsh 1''tanclarcl s

pu

blishcd BSJand carne into effect

on Septe

m

ber

2008.

ltwasprcpared Co

mmittec

TDW

4,

T

echnolog rmduct

reae

as

ion

.A

list

of organzato

ns

r

ep

r

esented ths

obtan

ed request to ts

secretary

.

BS 957:2008

7/25/2019 BS 957-2008

5/11

C 2008 1

BS EN

1 0

6507

(98 N

apprux.

}

"' 0.005" 0 .

00

8

0

.

008

~plieda n g e

'fuble

2 Hardness test - lnch units

ll)

pr

t>x .)

5

(4g N ap

prux

.)

;:: 01 5 ~ 020

0

.

20

Ioed

kgf

Tuble1

Bardness test -

me

tr

c

units

g

tn1 () r , . " (tr

fl~it

n 1 lf> . i ;li.ttu:e1u/.

b

e for hardness in accordan

ce

with

BS

E N I

SO

C.507

as

shown in

'rab

ie

l

and

'

rabie 2.

4.1 The blades shall be made of good quality stee

and shall

hardened

and

tempered

to a

hardness o

f n

o

t l

ess

than

400 HV nor

more G O O HV J

.

purchaser shall state in enqury and order

th

e particular

combination of

blades

and

length

ofblades

re

q

ured,

r

? ( J U r d b t g

i f

.

'l'be fo llowing referenced documents

ar

e indispensable for the

applcaton of For refrences, the

app

les.

r

efer

en

c

es

,

referenced document (induding any amendments) appUes.

B S E N IS O 6

507

,

V

i.l c < m < tP.St

'l'

his standard is applcable to blades of thcknesses:

from 0.03 mm 1.00 mm inclusive (mctric unts); and

from 0

.

00

1 5

0

.

025 in inclus

i

ve

(

inch

unts).

'l'his British Standard speccs requremcnts for feeler gauges,

co

mprising

a seri

e

s of gaugng

blades

(blades) of

graded thcknesses

assemb

led in

a . p

ro

te

ctive sheath

or supp

lied

indi\idua Jy. These includ

e

dmensons in

unts.

BS 957

:

2008

7/25/2019 BS 957-2008

6/11

2

2008

'The blades,

t

hrough.ou

t

, sha1J be free from sharp edges.

Tbe blade

s

urfuces

and

edg

e

s shall free frorn

d

eformations

and

have

a sm

oo

th

finish.

mm

3

1 5

0 6

2

Blades up to 75 mm (3 long

sha1J

be

approximate

ly 12 mm

(

~

wid

e

at

the heel and may

be parallel or tapered

, as m a.v

o

rd

ered

by

the

Blades greater than 75 mm (3 shall be

tape

red for the outer part of

their le

ngth so

that the width at the

ti

p is approximately 6 mm

{

in)

.

l.tM

mo

r

e

liut.

Y

I

H ?

;itl

r

Tbe

other ends of th

c

bla

des shall

approxmate

ly sem-c

rcular

,

B lad

e lengths, measured

ovc

rall, shall

be

as follo

ws

.

4

.S

B

lades ofthicknes.ses less than O . mm and 0

.

006 shall

subi

ected to a

scrat

ch c

ompatiso

n

t

est where

by the

blade s

hall

p

laced on

a hard

,

polished

surface

and scratched w ftha

diamond tipped

or stcel stylus w

hich a

tip radius of

approximately

0

.

6

mm

{

0.

02

'The mark

produc

e

d

shall

then compared

" 1 ' 1 1 t h

o,

mark

p

roduced on a steel test

pi

ece

o

f

kn

own hardness

th

e

rang

e

4()()..450

H V . The

mark s

hall

mad

e

the

same

manner

and usng the same force

on bot

h

the

b

lade

and th

e

test

p

ece

.

B S 957:2008

7/25/2019 BS 957-2008

7/11

e

B S

J 200

8

3

Thc sheath shall

b

e legibly

p

ermancntly mar

ke

d to indicate

wheth

er

in tnch units

manufacturer

'

s

vendor'

s

name trade

9.2

Each blade

s

hall be legibly

and permanen

tJy marked

w ith it.

0

.

021 . n . ,

S~ J()up

t

a

0

.

026.fn

,

1 5 0.035 in.

T h

e 1

1 1

.clu.\'i

t

u

.

, , , ,

u1 rg l& :l . ." l A

e

to

O

.001 5 bt lm

Y

nnl>ltwl

. l. &

u

- r

u > I .

more

lJ

ut

n

l

wt>

bl1 Jiles.

.\) 1 n of the delicate

nature

the

that

t

h.is beincluded dupli

c

ate

seta

lO

and 1 5.

0

.015

0

.

010

0

.

003

0

.

004

0.005

0.006

0.002

Set 10 S..t

1

5

in

O .OOJ

5

0.001 6

0.002 0.002

0

.

0

0

2

5

0

.

003 0

.

003

0

.004 0.004

0.005 0.00

5

0.00

6

0.006

0

.

007

0.008

o o os

0.000

O .

OJO

0

.

010

0

.

012

0

.016 0.015

0.020 0.020

0.02

5

Table \.2 Comb

inati

o

n

o

f

blade

s - inch

nnit

s

Set7

6 C

B S1

200S

BS 957:2008

7/25/2019 BS 957-2008

11/11

Co

pyright

Copyrightsubsl'1S in aD 8SI publieation.. 881 also ho

i

ds the

co

pyright, in tho U K , ot'

t hc

o

f

th

c ln t .c :mat lo1 ta.1t : a n d a r d i za

t i o u b o d i e s

as

undcr the Copyright

, Dcslgns aruI

Patcnts

Act IH88 no cxtract may

be roprodue d

,

stor c d

in

a rct r i c vn l s y s t c m 1 o r tran ~mittcd n f o n n o r by

a

n y n\can.~ cloctl'onc

1

f r o n 1

B S

L

< l o e s

notprc

clu

d e

t .h c~u

, t .hc

c o U T S C

oftn1plcn~ n t i n g

sr.a

nd

a

rd,

of

n

cccssazy dctalls

such a

ll)'mbols,and sizc,

or gra

de desigrumon.-.

thcsc

t .o

b e u.sed thcn t b e

J)r l

o r

riltc

n p c m t l s s i o n

o

f BSI nn1 s t b e o b r . a i n c d

and

advicc can be obt.aincd tho

Co

pyriglt

t

& Ll

c

f