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ASTM International, 04/01/2012
Publisher: ASTM
File Format: PDF
$29.00$58.00
Published:01/04/2012
Pages:6
File Size:1 file , 100 KB
Note:This product is unavailable in Russia, Ukraine, Belarus
1.1 This specification covers the requirements for carbon and alloy steel compressible-washer-type direct tension indicators capable of indicating a specified bolt tension in cap screws, bolts, anchors, and studs.
1.2 Direct tension indicators in nominal diameter sizes 1/4 through 21/2 in. are covered.
1.3 There are two Types of DTIs covered by this specification, Type 1 and Type 2.
1.3.1 Type 1 DTIs are suitable for comparatively large bearing surfaces.2 Type 1 DTIs are available in Grades 55 and 105, which differ in the amount of tension they indicate at a prescribed gap (see Table 1).
DTI Nominal Diameter (in.)
Mean Compression LoadB Range in Pounds (lbs)
Mean Compression LoadC Range in Pounds (lbs)
Grade 5
Grade 8
Grade 55
Grade 105
1/4
2200 to 2450
3100 to 3450
. . .
5/16
3500 to 3850
4950 to 5500
³/8
5300 to 5850
7500 to 8300
7/16
7200 to 7900
10 100 to 11 200
1/2
9700 to 10 700
13 700 to 15 340
4450 to 4900
8500 to 9400
9/16
12 350 to 13 600
17 400 to 19 200
5700 to 6300
10 900 to 12 050
5/8
15 550 to 17 200
21 850 to 24 200
7050 to 7800
13 500 to 15 000
³/4
22 600 to 25 000
31 900 to 35 300
10 500 to 11 600
20 000 to 22 150
7/8
30 850 to 34 100
43 550 to 48 100
14 500 to 16 000
27 650 to 30 550
1
40 200 to 44 400
56 700 to 62 700
19 000 to 21 000
36 250 to 40 100
11/8
45, 100 to 49 850
73 150 to 80 900
23 950 to 26 450
47 300 to 52 300
11/4
56 550 to 62 550
91 750 to 101 450
30 400 to 33 600
59 850 to 66 150
1³/8
69 350 to 79 750
112 450 to 124 250
38 550 to 42 600
73 800 to 81 600
11/2
83 350 to 92 150
135 150 to 149 400
44 050 to 48 700
89 300 to 98 700
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