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High Strength Structural Bolts

High Strength Structural Bolts
High Strength Structural Bolts
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Product Code : 09
Product Description

High Strength Structural Bolts

  • High strength structural bolts M16 to M36 or equivalent size in inch series.
  • Dimensions for bolts conforming to IS 3757, DIN- 6914, ASTM 325 M or ISO 7412. Nut dimensions shall conform to IS - 6623, DIN 6915, ASTM A 563M or ISO 4775. Washer dimensions shall be conforming to IS -6649, DIN-6917, ASTM F -436 or ISO 7415.
  • Mechanical properties conforming to 8.8 or 10.9 grade as per IS - 1367 or ISO 898 or as per respective standard.
  • Threads conforming to medium class fit or class "6g" for bolts and "6H" for nuts as per IS - 4218, ISO 261/965.
  • Products are generally supplied in thermal black finish. Hot dip galvanized finish can be supplied on specific request.

'PF' High Strength Bolts for Structural Steel Joints with Nuts & Washers to Comply with ASTMA-325M/A490M for Bolts, A563M for Nuts & F436M for Washers Grade 8S/10S.

Table 1 : P.F. ASTM A325M High Strength Structural Bolts – Dimensions

Thread Size

M16

M20

(M22)

M24

(M27)

M30

M36

Pitch

2.0

2.50

2.50

3.00

3.00

3.50

4.00

B

Max.

16.70

20.84

22.84

24.84

27.84

30.84

37.00

Min.

15.30

19.16

21.16

23.16

26.16

29.16

35.00

da

Max.

18.70

23.24

25.24

27.64

30.40

33.40

39.40

W

Max.

27.00

34.00

36.00

41.00

46.00

50.00

60.00

Min.

26.16

33.00

35.00

40.00

45.00

49.00

58.80

C

Min.

29.56

37.29

39.25

45.20

50.85

55.37

66.44

H

Max.

10.75

13.40

14.90

15.90

17.90

19.75

23.55

Min.

9.25

11.60

13.10

14.10

16.10

17.65

21.45

R

Min.

0.60

0.80

0.80

1.00

1.20

1.20

1.50

T

T1 Ref.

31

36

38

41

44

49

56

T2 Ref.

38

43

45

48

51

56

63

Table 2 : P.F. ASTM A563M High Strength Structural Nuts-Dimensions

Thread Size

M16

M20

(M22)

M24

(M27)

M30

M36


Pitch

2.0

2.50

2.50

3.00

3.00

3.50

4.00

W

Max.

27.00

34.00

36.00

41.00

46.00

50.00

60.00

Min.

26.16

33.00

35.00

40.00

45.00

49.00

58.80

C

Min.

29.56

37.29

39.55

45.20

50.85

55.37

66.44

H

Max.

17.10

20.70

23.60

24.20

27.60

30.70

26.60

Min.

16.40

19.40

22.30

22.60

26.30

29.10

35.00

Weight Kg./- 1000 Pcs.

60.4

115.3

142.8

197.7

282.30

365.0

281.8


Table 3 : P.F. ASTM F436M High Strength Structural Washers – Dimensions

Bolt Size

M16

M20

(M22)

M24

(M27)

M30

M36

d

Min.

18.00

22.00

24.00

26.00

30.00

33.00

39.00

Max.

18.40

22.50

24.50

26.50

30.50

33.60

39.60

D

Max.

34.00

42.00

44.00

50.00

56.00

60.00

72.00

Min.

32.40

40.40

42.40

48.40

54.10

58.10

70.10

H

Max.

4.60

4.60

4.60

4.60

4.60

4.60

4.60

Min.

3.10

3.10

3.40

3.40

3.40

3.40

3.40

Weight Kg./- 1000 Pcs.

20.3

31.3

33.2

44.7

54.8

61.4

89.7

Table 4 : Mechanical Properties of H.S.S. Bolts

Thread Size

Stress Area

Property Class 8.8

Property Class 10.9

Ultimate Load (Min)

Proof Load (Min)

Hardness

Ultimate Load (Min)

Proof Load (Min)

Hardness


Mm2

Newtons

Newtons

HRC

Newtons

Newtons

HRC

M16

157

125600

91060

22 – 32

163280

130310

33 - 39

M20

245

203350

147000

23 – 34

254800

203350

M(22)

303

251490

181800

315120

251490

M24

353

292990

211800

367120

262990

(M27)

459

380970

275400

477360

380970

M30

561

465630

336600

583440

465630

M36

817

678110

490200

849680

678110


Table 5 : Mechanical Properties of H.S.S. Nuts

Thread Size

Property Class 8

Property Class 10

Proof Load Newtons

Hardness

Proof Load Newtons

Hardness

M16

168900

HRB 89 to HRC 30

195500

HRC 26 to HRC 36

M20

263400

305000

M(22)

325700

377200

M24

379500

439500

(M27)

493400

571500

M30

603100

698400

M36

878300

1017200



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