Is 8068.1976 tab washer
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This document is an amendment to the Indian Standard IS 8068-1976 which provides specifications for tab washers. The amendment changes the material specification in clause 5 of the original standard. Specifically, it removes the reference to tab washers with long tabs being made from carbon steel or brass, and instead specifies that all tab washers shall be made from either cold rolled carbon steel or brass. This broadens the allowed materials from the original standard which differentiated materials based on tab washer type.
![Disclosure to Promote the Right To Information
Whereas the Parliament of India has set out to provide a practical regime of right to
information for citizens to secure access to information under the control of public authorities,
in order to promote transparency and accountability in the working of every public authority,
and whereas the attached publication of the Bureau of Indian Standards is of particular interest
to the public, particularly disadvantaged communities and those engaged in the pursuit of
education and knowledge, the attached public safety standard is made available to promote the
timely dissemination of this information in an accurate manner to the public.
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IS 8068 (1976): Tab Washers [PGD 31: Bolts, Nuts and
Fasteners Accessories]](https://image.slidesharecdn.com/is8068-150518073234-lva1-app6891/85/Is-8068-1976-tab-washer-1-320.jpg)
Is 8068.1976 tab washer
- 1. Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. 爐爐爐爐萎え爛爐 爐爐鉦え爐 !爐鉦え $ 爐踱 爐' 爐爐鉦ぐ爐 爐爐 +爐爐-爐ｂ Satyanarayan Gangaram Pitroda Invent a New India Using Knowledge 爐0爐萎ぞ1 爐爛 爐爛爐 爐' 5 爐むぐ爐 Jawaharlal Nehru Step Out From the Old to the New 爐爐鉦え1 爐爐 爐+爐о爐鉦ぐ, 爐爛1 爐爐 爐+爐о爐鉦ぐ Mazdoor Kisan Shakti Sangathan The Right to Information, The Right to Live !爐鉦え 爐踱 爐爐伍ぞ 爐爐爐鉦え爐 > 爐爛 爐爐爛 爐0爐萎ぞ爐爐 爐爐B 爐爐 爐伍爐むぞ 爐項 Bhart畊hariN朝tiatakam Knowledge is such a treasure which cannot be stolen Invent a New India Using Knowledge 爐項爐高爐 IS 8068 (1976): Tab Washers [PGD 31: Bolts, Nuts and Fasteners Accessories]
- 4. UDC 62188254 Isl 1 I Indian Standard SPECIFICATION FOR TAB WASHERS IS: 8068-1976 1. Scope - Covers the requirements for tab washers of two types for locking bolts and nuts in the bolt diameter range 3 to 52 mm. 2. Types - The following are the two types: Type A - Tab washers with long tab, and Type B - Tab washers with long tab and wing. 3. Grade - Precision grade conforming to IS : 5369-l 975 General requirements for plain washers and lock washers ( first revision ) . 4. Dimensions - As given in Table 1 for Type A and in Table 2 for Type B. 4.1 Dimensional tolerances as well as tolerances for form and position shall conform to precision washers of IS : 5369-l 975. 5. Material -Tab washers with long tab shall be made from cold roiled carbon steel, grade 0 of IS : 513-l 973 Specification for cold rolled carbon steel sheets (second revision ) or brass Cu Zn37 of IS : 410-I 967 Specification for rolled brass plate, sheets, strip and foil ( secondrevision ) (the choice of temper being left to the manufacturer ) or any other suitable material as specified by the purchaser. 6. Designation 6.1 Tab washers shall be designated by the name, type, nominal size and the number of this standard. Example: A tab washer of Type A, Size 19 mm shall be designated as: Tab Washer A 19 IS : 8068 6.2 When a non-ferrous material, for example, brass is used for the manufacture, the word Brass shall come at the end of the designation: Example: A tab washer of Type B, size 19 mm and made of brass shall be designated as: Tab Washer B 19 IS : 8068 Brass 7. General Requirements - In regard to the requirements not covered in this standard, they shall conform to the requirements of IS : 5369-l 975. Adopted 28 May 1976 I @ July 1976, ISI INDIAN STANDARDS INSTITUTION MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELHI IIOOOP ( Reaffirmed 2001 )
- 5. IS:8068- 1976 TABLE 1 DIMENSIONS FOR TAB WASHERS, TYPE A ( Clause 4) All dimensions in millimetres. - - _ I- b -- -~_ N%2:a 4 32 12 (37) 12 43 14 53 17 64 19 (74) 19 84 22 105 26 13 30 (15) 33 (Z) 3640 (S) 5042 25 50 23 53 (Z) 6363 (% 7582 43 88 _ 46 95 50 100 54 105 b 4 4 5 6 7 7 8 10 12 12 15 18 18 20 20 23 26 28 30 32 35 38 40 44 - - I r s 13 25 04 13 2.5 04 14 25 04 .- _- - _- .- .- - ~ - 16 25 18 4 18 4 20 4 22 6 28 10 28 10 32 10 36 16 36 10 42 0, 42 10 48 16 52 16 56 16 60 16 64 16 70 16 75 16 80 16 85 16 05 05 05 M5 (E, 08 M8 08 Ml0 1 Ml2 (Ml4) Ml6 (Ml81 M20 (M22) M24 16 16 16 w27) M30 W33) 16 16 16 M36 (M39) M42 16 16 16 M45 M48 M52 Suitable for Bolt Size (E-5) M4 Note - Sizes in brackets are of second preference.
- 6. IS:8068- 1976 TABLE 2 DIMENSIONS FOR TAB WASHERS, TYPE B ( Clause 4 ) All dimensions in millimetres. Nominal Size 4 b 11 r Suitable for Bolt Size dl 32 (37) 4.3 7 8 9 4 13 4 13 5 14 5 16 55 16 65 25 I- 04 04 04 M3 (M35) M4 53 64 (74) 10 125 14 6 16 7 18 7 18 8 9 IO 25 4 4 05 05 05 84 105 13 - _. . . -_ _, _ 17 21 24 8 20 IO / 22 12 / 28 .- __ i - -- _- 11 13 15 4 4 6 08 08 10 M.5 M6 (M7) M8 Ml0 Ml2 (15) 17 (19) 28 30 34 21 (23) 25 ___-- (28) 31 (34) 12 28 15 32 18 36 P_ 18 36 20 42 20 42 23 48 26 52 28 , 56 16 6 18 6 20 6 1'0 1'0 I.0 37 39 44 21 23 25 __ (Ml4) Ml6 (Ml8) M20 (M22) M24 50 56 60 29 6 32 10 34 10 I.0 1'0 I.0 -____ 16 16 I.6 37 (40) 43 66 30 60 38 IO 72 32 64 41 IO 78 35 70 44 IO 16 16 16 (M27) M30 (M33) M36 (M39) M42 46 85 38 75 48 10 16 M45 50 92 40 80 50 IO 16 M48 54 98 44 85 53 10 16 M52 - Note -Sizes in brackets are of second preference. EXPLANATORY NOTE In the preparation of this standard considerable assistance has been derived from the followin standards issued by Deutsches lnstitut ftir Normung: DIN 93-1974 Scheiben mit Lappen (Tab washers with long tab ) DIN 463-1974 Schieben mit 2 Lappen ( Washer with 2 tabs ) 3 Printed at Delhi Printers, Delhi. India
- 7. AMENDMENT NO. 1 MARCH 1978 TO IS : 8068-1976 SPECIFICATION FOR TAB WASHERS Corrigendum ( Page 1, clause 5 ) - Substitute the following for the existing clause: 5. Material-Tab washers shall be made from cold rolled carbon steel, grade 0 of IS :513-1973 Specification for cold rolled carbon steel sheets ( second revision ) or brass Cu Zn37 of IS : 410- 1967 Specification for rolled brass plate, sheets, strip and foil ( second revision ) ( the choice of temper being left to the manufacturer) or any other suitable material as specified by the purchaser. (EDC27) Printed at Kew India Printing Press. Khurja, India