BRITISH STANDARD ON FASTENERS BOLTS, NUTS, SCREWS THREADS, RIVETS ETC.

BOLTS, NUTS, SCREWS AND WASHERS

S.No.

BS No.

Year

Pt. No.

Particulars

1

57

1951

 

BA screws, Bolts and Nuts (Obsolescent) Gr. 5

 

2

325

1947

 

Black cup and countersunk bolts and Nuts ( Obsolescent) Gr.4

 

3

450

1958

 

Machine screws and machine screw Nuts (BSW and BSF  threads) ( Obsolescent) Gr.7

 

4

768

1958

 

Slotted Grub screw ( Obsolescent) Gr. 4

 

5

856

1969

 

Wing Nuts Gr.4

 

6

916

1953

 

Black Blots, screw and Nuts ( Obsolescent) Gr. 4

 

7

1083

1965

 

Precision Hexagon Bolts, screw  and Nuts (BSW and BSF threads) (Obsolescent) Gr. 5 

 

8

1210

1963

 

Wood screw Gr.7

 

9

1768

1963

 

Unified precision Hexagon Bolts, screw and Nuts (UNC and

 

10

1769

1951

 

Unified Black Hexagon Bolts, Screws and Nuts (UNC and UNF threads) Normal Series Gr.7

 

11

1802

1951

 

Steel Spring Washers for general engineering and automobiles purposes. (Obsolescent) Gr.3

 

12

1936

1952

Part 1

Undercuts and runouts for screw threads Gr.4

 

13

1936

1970

Part 2

ISO Metric Screw threads (± ISO 3508) Gr.4

 

14

1981

1972

 

Unified Machine Screws and Machine Screws Nuts Gr.9

 

15

2061

1953

 

Phosphor Bronze Spring Washers go general engineering purposer (Obsolescent) Gr.3

 

16

2470

1973

 

Hexagon Socket Screws and Wrench keys. Inch series Gr.8

 

17

2693

1956

Part 1

Screwed Studs - General Purpose studs (Obsolescent) Gr. 4

 

18

2693

1964

Part 2

Recommendations for high grade studs Gr. 4

 

19

2708

1956

 

Unified black square and hexagon Bolts, Screws and Nuts (UNC and UNF threads). Normal Series Gr. 6

 

20

2827

1957

 

Machine Screw Nuts, pressed type (BA and Whitworth form threads) (Obsolescent) Gr. 2

 

21

3139

1959

Part 1

High Strength friction grip bolts for structural engineering - General grade bolts. Gr. 6

 

22

3294

1960

Part 1

The use of high strength friction grip bolts in structural steelwork - General grade bolts Gr. 4

 

23

3382

1961

 

Electroplated coatings on threaded components.

 

24

3401

1961

 

Beryllium copper crinkle washers. Gr. 2

 

25

3409

1961

Part 1

The tapping of holes to receive wire thread inserts (UNC and UNF threads) Dia 1/4" and Over Gr. 5

 

26

3409

1966

Part 2

Diameters below 1/4" Gr. 4

 

27

3410

1961

 

Metal washers for general engineering purposes Gr. 4

 

28

3692

1967

 

ISO metric precision hexagon bolts, screws and nuts (≠ ISO/R 272, 288, 733, ISO 885, 888, 898/1, 898/2) Gr. 7

 

29

4168

1967

 

Hexagon socked screws and wrench keys - metric series(≠ ISO/R 861, ISO 885, 888, 898/1; ± ISO 2343). Gr. 6

 

30

4168

1981

Part 1

Hex socket head cap screws (± ISO 4762) Gr. 3

 

31

4168

1981

Part 2

Hex socket screws with flat point(≠ ISO 4026) Gr. 3

 

32

4168

1981

Part 3

Hex socket screws with cone point (≠ ISO 4027) Gr. 3

 

33

4168

1981

Part 4

Hex socket screws with dog point (≠ ISO 4028) Gr. 3

 

34

4168

1981

Part 5

Hex socket screws with cup point (≠ ISO 4029) Gr. 3

 

35

4168

1982

Part 6

Hex socket button head screws Gr. 3

 

36

4168

1982

Part 7

Hex socket shoulder screws Gr. 3

 

37

4168

1982

Part 8

Hex socket countersunk head screws Gr. 3

 

38

4174

1972

 

Self-tapping screws and metallic drive screws (≠ ISO/R 1478-83; ± ISO 2770) Gr. 9

 

39

4183

1967

 

Machine screws and machine screw nuts-metric series (≠ ISO 885, 888, 898/1, ISO 1207, ISO/R 1580, ISO 2009-10) Gr. 7

 

40

4186

1967

 

Recommendations for clearance holes for metric bolts and screws (≠ ISO/R 273) Gr. 3

 

41

4190

1967

 

ISO metric black hexagon bolts, screws and nuts (≠ ISO/R 272,733, ISO 885,898/1, 898/2) Gr. 7

 

42

4219

1967

 

Slotted grub screws - metric series (≠ISO 888,898/1; ± ISO 2342) Gr.4

 

43

4320

1968

 

Metal washers for general engineering purposes (≠ ISO/R 887) Gr.4

 

44

4395

1969

Part 1

High strength friction grip bolts and associated nuts and washers for structural engineering - general grade (≠ ISO 225, ISO/R 272, 733, ISO 885, 888) Gr. 6

 

45

4395

1969

Part 2

High strength friction grip bolts and associated nuts and washers for structural engineering-Higher grade bolts & nuts & general grade washers (≠ ISO 225, ISO/R 272,733, ISO 885, 888, 898/1, 898/2) Gr. 6

 

46

4395

1973

Part 3

High strength friction grip bolts and associated nuts and washers for structural engineering - Higher grade bolts (wasted shank), nuts & general grade washers (≠ ISO 225, ISO/R 272, 733, ISO 885, 888, 898/1, 898/2) Gr.6

 

47

4439

1969

 

Screwed studs for general purposes (≠ ISO 225, ISO 888, 898/1) Gr.6

 

48

4463

1969

 

Crinkle washers for general engineering purposes (metric series) Gr. 3

 

49

4464

1969

 

Spring washers for general engineering and automobile purposes (metric series) Gr.4

 

50

4604

1970

Part 1

The use of high strength friction grip bolts in structural steelwork, Metric series - General grade Gr.4

 

51

4604

1970

Part 2

The use of high strength friction grip bolts in structural steelwork, Metric series - Higher grade Gr.4 (Parallel shank) Gr.4

 

52

4604

1973

Part 3

The use of high strength friction grip bolts in structural steelwork, Metric series - General grade Gr.4 (Waisted shank) Gr.4

 

53

4882

1973

 

Bolting for flanges and pressure containing purposes Gr.9

 

54

4929

1973

Part 1

Steel hexagon prevailing - torque type nuts - metric series (≠ ISO/R 272, 733, ISO 898/1, 898/2, 898/3, ISO 2320, 2358) Gr. 6

 

55

4929

1973

Part 2

Steel hexagon prevailing - torque type nuts - Unified (Inch) series (≠ISO 898/1, 898/2, ISO 2359) Gr. 7

 

56

4933

1973

 

ISO metric black cup and countersunk head bolts and screws with hexagon nuts(≠ ISO 225, 888, 898/1) Gr.7

 

57

5814

1979

 

Metal tab washers for general engineering purpose, Metric series Gr.3

 

58

6040

1981

 

Nomenciature for bolts, screws, nuts and accessories (= ISO 1891) Gr.9

 

59

6104

1981

Part 1

Mechanical properties of fasteners - Bolts, screws and studs (±ISO 898/1) Gr.7

 

60

6104

1981

Part 3

Set screws and similar threaded fasteners not under tensile stresses (=ISO 898/5) Gr.5

 

61

6105

1981

 

Corrosion - resistant stainless steel fasteners(=ISO 3506) Gr.7

 

62

6322

1982

Part 1

Tolerances for fasteners - bolts, screws and nuts with thread diameters from 1.6mm and 150 mm and product grades A,B, and C (=ISO 4759/1) Gr.8

 

63

6322

1982

Part 2

Tolerances for fasteners - bolts, screws and nuts with thread diameters from 1mm upto 3mm and product F for fine mechanics(=ISO 4759/1) Gr.4

 

64

6322

1982

Part 3

Tolerances of washers for metric bolts, screws & nuts with thread dia from 1mm upto & including 150mm products grades A & C (=ISO 4759/3) Gr.4

 

SCREW THREADS

1

84

1956

 

Parallel screw threads of Whiteworth form Gr. 7

 

2

93

1951

 

British Association (BA) screw threads with tolerance for sizes 0 BA to 16 BA Gr.5

 

3

811

1950

 

Cycle threads Gr. 5

 

4

1580

1962

part 1

Unified screw threads - Dia 1/4" and larger (≠ ISO 263, ISO/R 725) Gr. 9

 

5

1580

1965

part 3

Unified screw threads - Dia below 1/4" (≠ ISO 263, ISO/R 725) Gr. 7

 

6

1936

1952

part 1

Undercuts and runouts for screw threads Gr. 4

 

7

1936

1970

part 2

ISO metric screw threads (± ISO 3508) GR. 4

 

8

3643

1981

part 1

ISO metric screw threads - principle and basic data Gr. 9

 

9

3643

1981

part 2

ISO metric screw threads - selected limits of size Gr.9

 

10

4827

1972

 

ISO miniature screw threads (≠ ISO/R 1501) Gr. 6

 

11

5346

1976

 

ISO metric trapezoidal screw threads (≠ ISO 2901, 2902, 2903, 2904) Gr.7

 

RIVETS, PINS ETC.

1

275

1927

 

Dimensions of rivets (1/2 " to 1.3/4" diameter) Gr. 4

 

2

641

1951

 

Dimensions of small rivets for general purposes Gr. 4

 

3

1109

1963

 

(1982) Cold forged mild steel rivets for cold closing Gr. 1

 

4

1202

1974

part 1

Nails - Steel nails. Gr. 7

 

5

1202

1974

part 2

Nails - Copper Nails Gr. 5

 

6

1202

1974

part 3

Nails - Aluminium Nails Gr. 5

 

7

1574

1972

 

Split cotter pins - metric and inch series ( ISO 1234) Gr. 4

 

8

1804

1966

part 1

Parallel steel dowel pins. - Inch Series. Gr. 3

 

9

1804

1968

part 2

Parallel steel dowel pins. - Metric Series. ( ISO 2338) Gr. 3

 

10

1804

1973

part 3

Parallel & taper types, having screw threads for extraction purposes - Metric Series. Gr. 6

 

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