”

B . . z a

UDC 621’882’4 : 624’014’2 ( Third Reprint AUGUST 1997 ) IS:6610- 1972

, i)srffiwmnA I aaq ) \ ,,.z~,,III..IY ,sPIY

Indian Standard

SPECIFICATION FOR

HEAVY WASHERS FOR STEEL STRUCTURES a

1. Scope - to 42 mm.

Requirements for heavy washers for use in steel structures in the diameter range 14

2. Dimensions - The dimensions of heavy washers shall be according to Table 1.

3. Material -Washers covered in this standard shall be made from steel.

4. Designation - The washers shall be designated by the nominal size and the number of this standard.

Example: A heavy washer having a nominal size of 14. mm and conforming to this standard shall

be designated as: Washer 14 IS : 6610

5. Other Requirements- Other requirements for the heavy washers not covered in this standard shall conform to the requirements applicable for black washers dpecified in IS : 5369-l 969 ’ General requirements for plain washers and lock washers ‘.

TABLE 1 DIMENSIONS FOR HEAVY WASHERS FOR STEEL STRUCTURES

All dimensions in millimetres.

. iOl 0 21115

Nominal Size, dl d2 S Suitable for Bolt Size

Tolerance W4)

+ 0’43 + 0’43 + 0’52 + 0’52 f 0’62 + 0’52 + 0’62 + 0’62 + 0’62 + 0’62

Basic

f: 37 39

z: 56 60

;;

Tolerance W6)

- 1’30 - 1’30 - 1’60 - 1’60 - I.60 - 1’60 - 1’90 - 1’90 - 1’90 - 1’90

8” Ml2 Ml6

8 M20

t M22 M24 M27

: M30 8 M33

M36 8” M39

_~~ _~

EXPLANATORY NOTE

In the preparation of this standard assistance has been derived from Dot : ISO/TC 2( 457 1 8 Proposal for high washers for hexagon bolts for steel structures, Metric series ‘.

Adopted 1 August 1972 I

@ October 1972, 6 IS I

Gr 1 __

BUREAU OF INDIAN STANDARDS

MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG

NEW DELHI 110002