|
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION
1 S O R E C O M M E N D AT1 O N
R 234
FILES ANID RASPS
LENGTHS AND CROSS SECTIONS
1st EDITION
December 1961
COPYRIGHT RESERVED
The copyright of IS0 Recommendations and IS0 Standards belongs to
IS0 Member Bodies. Reproduction of these documents, in any country,
may be authorized therefore only by the national standards organization
of that country, being a member of ISO.
For each individual country the only valid standard is the national standard of that country.
Printed in Switzerland
Also issued in French and Russian. Copies to be obtained through the national
standards organizations.
---------------------- Page: 1 ----------------------
BRIEF HISTORY
The IS0 Recommendation R 234, Files and Rasps - Lengths and Cross Sections, was drawn
up by Technical Committee ISO/TC 29, Small Tools, the Secretariat of which is held by the Associa-
tion Française de Normalisation (AFNOR).
Work on this question by the Technical Committee began in 1950 and led, in 1958, to the adop-
tion of a Draft IS0 Recommendation.
In September 1959, this Draft IS0 Recommendation (No. 296) was circulated to all the IS0
Member Bodies for enquiry. It was approved, subject to a few modifications of an editorial nature,
by the following Member Bodies :
Austria Italy Sweden
Belgium Mexico Switzerland
Burma Netherlands United Kingdom
Czechoslovakia Pakistan U. S. A.
France Portugal U. S. S. R.
Greece Romania
Three Member Bodies opposed the approval of the Draft:
Germany, Hungary, Poland.
The Draft IS0 Recommendation was then submitted by correspondence to the IS0 Council,
which decided, in December 1961, to accept it as an IS0 RECOMMENDATION.
- 2-
---------------------- Page: 2 ----------------------
ISO/R 234 - 1961 (E)
IS0 Recommendation R 234 Decem ber 1961
FILES AND RASPS
LENGTHS AND CROSS SECTIONS
INTRODUCTION
I. SCOPE
This IS0 Recommendation relates to lengths and cross sections of files and rasps and deals with
4
the four following types of tools:
1. Engineers' files . Tables 1.1 and 1.2,
2. Saw files (second cut single). . Tables 2.1 and 2.2,
Tables 3.1 and 3.2,
3. Mill files and miscellaneous files .
4. Rasps . Tables 4.1 and 4.2.
For each type mentioned above, the IS0 Recommendation comprises two tables, giving respec-
tively
the dimensions in millimetres and
the corresponding dimensions in inches.
II. INTERCHANGEABILITY.
The dimensions adopted in the present IS0 Recommendation have been determined in such a way
as to ensure the practical interchangeability, for commercial purposes, of files and rasps, which-
ever system of units of measurement is used; the dimensions expressed in either of the two systems,
millimetres or inches, correspond approximately to those expressed in the other.
---------------------- Page: 3 ----------------------
1. ENGINEERS' FILES
1.1 Dimensions in millimetres
D?.
8CIID-
tion
Length
Section a x b (or a)
100
12x3 12x3 11x4 12.5x3.25 8 4 4 12x15 13x3
--____
125
-1-1- - - 1 io 1 5 1 5 Ii4xi:7k
150
16x41 16x4 1 16~4.51 19x5 I 11 I 6 I 6 116x2 1 18x4
200
21x5 121x6 25~6.5 15 8 8 20x2.5 22x5
________
250 25~6.51 25x7 1 32x8 1 18 1 10 1 10 1 - 1 27x6.:
__~
300
350
400
450
NOTES
1. Lengths measured excluding the tang.
2. Sections measured on the uncut portion adjacent to the tang:
a = width b = thickness.
3. Tolerances
(1) all files, except warding files:
ona: rt_: 1.6mm, on b: rt_: 0.8 mm for lengths 5 150 mm,
& 1.6 mm for lengths > 150 mm;
(2) warding files :
ona: & 0.8 mm, on b: & 0.4 mm.
1.2 Dimensions in inches
Plat Half-
square Round Sauarc Warding Knife
DE- pointed I hand round
Ifeather- 1 I 1 1
scrip-
tiou -
- I - I + IAIdd - I -
- I-
Rngthl Section a x b (or a) I
NOTES
1. Leng
...