Carbon Steel ASTM F959 DTI Squirter Steel Flat Washer
Specification
These washers release an orange dye when tightened. They’re designed for use with A325 A490 structural screws, studs, and nuts and are often used for construction and exterior building applications.
ASTM F959 covers the requirements for compressible washer type direct tension indicators in diameters ranging from 1/2” to 1-1/2” inclusive. These washers are capable of indicating the achievement of a specified minimum bolt tension. They are available in two grades for use with A325 and A490 structural bolts and are also available in a weathering steel option for both grades.
Nominal Diameter
d | |
| d | min | | max | | d1 | Protrusion Tangential Diameter | max | | dc | Type A325 | min | | max | | Type A490 | min | | max | | n | Number of Protrusions | Type A325 | | Type A490 | | h | min | Type A325 | | Type A490 | | H | max | Type A325 | | Type A490 | | | 0.523 | 0.654 | 0.786 | 0.917 | 1.048 | 1.179 | 1.311 | 1.442 | 1.573 | | 0.527 | 0.658 | 0.790 | 0.921 | 1.052 | 1.183 | 1.315 | 1.446 | 1.577 | | 0.788 | 0.956 | 1.125 | 1.294 | 1.463 | 1.631 | 1.800 | 1.969 | 2.138 | | 1.167 | 1.355 | 1.605 | 1.855 | 1.980 | 2.230 | 2.480 | 2.730 | 2.980 | | 1.187 | 1.375 | 1.625 | 1.875 | 2.000 | 2.250 | 2.500 | 2.750 | 3.000 | | 1.355 | 1.605 | 1.730 | 1.980 | 2.230 | 2.480 | 2.730 | 2.980 | 3.230 | | 1.375 | 1.625 | 1.750 | 2.000 | 2.250 | 2.500 | 2.750 | 3.000 | 3.250 | | 4 | 4 | 5 | 5 | 6 | 6 | 7 | 7 | 8 | | 5 | 5 | 6 | 6 | 7 | 7 | 8 | 8 | 9 | | 0.104 | 0.126 | 0.126 | 0.142 | 0.158 | 0.158 | 0.158 | 0.158 | 0.158 | | 0.104 | 0.126 | 0.142 | 0.158 | 0.158 | 0.158 | 0.158 | 0.158 | 0.158 | | 0.180 | 0.220 | 0.230 | 0.240 | 0.270 | 0.270 | 0.270 | 0.270 | 0.270 | | 0.180 | 0.220 | 0.240 | 0.260 | 0.270 | 0.280 | 0.280 | 0.280 | 0.280 | |
F959 Types
| Type 325 and 325-3 | For use with A325, F1852 and A325-3, F1852-3 structural bolts |
| Type 490 and 490-3 | For use with A490, F2280 and A490-3, F2280-3 structural bolts |
F959 Acceptable Compression Load Range
| Diameter | Type 325 and 325-3, in kips | Type 490 and 490-3, in kips |
| 1/2 | 12 – 14 | 15 – 18 |
| 5/8 | 19 – 23 | 24 – 29 |
| 3/4 | 28 – 34 | 35 – 42 |
| 7/8 | 39 – 47 | 49 – 59 |
| 1 | 51 – 61 | 64 – 77 |
| 1-1/8 | 64 – 77 | 80 – 96 |
| 1-1/4 | 81 – 98 | 102 – 122 |
| 1-3/8 | 97 – 117 | 121 – 145 |
| 1-1/2 | 118 – 143 | 148 – 178 |
F959 Chemical Requirements, Heat Analysis
| Element | Type 325 and 490 | Type 325-3 and 490-3 |
| Carbon | 0.30 - 0.55% | |
| Manganese | 0.50 – 0.90% | |
| Phosphorous, max | 0.040% | 0.040% |
| Sulfur, max | 0.045% | 0.050% |
| Silicon | 0.15 – 0.35% | 0.15 – 0.35% |
| Chromium | | 0.45 – 0.65% |
| Nickel | | 0.25 – 0.45% |
| Copper | | 0.25 – 0.45% |
- Weathering steel DTIs may also be made from any of the type 3 steels listed in A325 and F436
- Weathering Steel DTIs having Copper, Sulfur, and Phosphorous conforming to the above, and having a Corrosion Resistance Index of 6 or higher calculated on the basis of the heat analysis as described in Guide 101 Predictive Method based on the data of Larabee and Coburn shall be considered acceptable.
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PACKING
QBH BULK
20-25KG/CTN,36CTNS/PALLET
20-30KG/BAGS,36BAGS/PALLET
ONE TON/BOXES
50KG/ IRON DRUM,12 IRON DRUMS/PALLET
QBH SMALL PACKING
Packing in small boxes according to customer’s requirements
Packing in plastic bag according to customer’s requirements
QBH PALLET TYPE
SOLID WOOD FUMIGATION PALLET
EURO Pallet
THREE SPLINT PALLET
WOODEN BOX
The advantages of QBH
- QBH brand sales to the main quality assurance.
- Years of export trade management, excellent service, word-of-mouth guarantee.
- By working with TUV,escort for quality.
- Customization of non-standard parts can be made according to customer's requirements and drawings.
- For quality customers,we can provide a certain credit period.
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Carbon Steel ASTM F959 DTI Squirter Steel Flat Washer Images
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