Weld Stud base metals, load strengths, threads and engineering specifications for Arc and CD stud fasteners are provided in the charts below.
These basic specifications are typical values of the mechanical properties of Sunbelt weld studs.
Also shown are the chemical properties of low carbon steel.
For actual material analysis and physical properties, Sunbelt will provide upon request a detailed material certification.
| LCS=Low Carbon Steel | HSS=High Strength Steel | 304SS=304 Stainless Steel | 5000SA=5000 Series Aluminum | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Suggested Fastening Torque* (inch lbs.) | Ultimate Tensile Strength (lbs.) | Ultimate Shear Load (lbs.) | ||||||||||
| Stud Size | LCS | HSS | 304SS | 5000SA | LCS | HSS | 304SS | 5000SA | LCS | HSS | 304SS | 5000SA |
| 8-32 | 17.8 | - | 19.8 | - | 1010 | - | 1260 | - | 750 | - | 940 | - |
| 10-24 | 20.8 | - | 22.8 | 10 | 1230 | - | 1530 | 770 | 920 | - | 1150 | 460 |
| 1/4-20 | 65 | 130 | 75.2 | 40 | 2300 | 3800 | 2880 | 1360 | 1720 | 2400 | 2160 | 850 |
| 5/16-18 | 129 | 260 | 132 | 70 | 3740 | 6200 | 4680 | 2300 | 2800 | 4000 | 3500 | 1400 |
| 3/8-16 | 212 | 400 | 236 | 81 | 5550 | 9300 | 6920 | 3250 | 4160 | 6000 | 5190 | 2100 |
| 7/16-14 | 338 | - | 376 | 140 | 7630 | - | 9600 | 4400 | 5710 | - | 7200 | 2400 |
| 1/2-13 | 465 | 900 | 517 | - | 10200 | 16900 | 12800 | 5950 | 7650 | 11000 | 9600 | 3000 |
| 5/8-11 | 1000 | - | 1110 | - | 16300 | - | 20200 | - | 12200 | - | 15150 | - |
| 3/4-10 | 1259 | - | 1530 | - | 24000 | - | 30000 | - | 18000 | - | 22500 | - |
| 7/8-9 | 1919 | - | 2328 | - | 33300 | - | 41600 | - | 24900 | - | 31200 | - |
| 1"-8 | 2832 | - | 3440 | - | 43600 | - | 54500 | - | 32700 | - | 40900 | - |
| Base Material | Stud Material | |||
|---|---|---|---|---|
| Mild Steel 1008, 1010 | Stainless Steel 304, 305 | Aluminum 5356, 6061 | Brass 70-30, 65-35 | |
| Mild Steel: 1006 through 1030 | Excellent | Excellent | — | Excellent |
| Medium carbon steel: 1030 through 1050 | * Good | * Good | — | * Good |
| Galvanized sheet duct: or decking | Excellent | Excellent | — | — |
| Structural Steel | Excellent | Excellent | — | Excellent |
| Stainless steel: 405, 410, 430, and 300 series, except 303 | Excellent | Excellent | — | Excellent |
| Lead free brass; Electrolytic copper; Lead-free rolled copper | Excellent | Excellent | — | Excellent |
| + Most aluminum alloys of the 1000, 3000, 5000, and 6000 series | — | — | Excellent | — |
| Die-cast zinc alloys | * Good | * Good | Excellent | * Good |
* Good: Generally full strength results, depending upon the combination of stud size and base metal.
+ Other Materials, such as 7000 Series aluminum, titanium alloys, Inconel, etc. can be welded under specified conditions.
| Stud Material | Stud Size | Maximum Fastening Torque (Inch Lbs.) * | Ultimate Tensile Load (Lbs.) | Maximum Shear Load (Lbs.) |
|---|---|---|---|---|
| Low-carbon, copper-flashed steel | 6-32 8-32 10-24 1/4-20 5/16-18 3/8-16 | 6 12 14 43 72 106 | 500 765 960 1750 2900 4300 | 375 575 720 1300 2200 3250 |
| Stainless steel: 304 | 6-32 8-32 10-24 1/4-20 5/16-18 3/8-16 | 10 20 23 75 126 186 | 790 1260 1530 2880 3750 4850 | 590 940 1150 2160 2800 3600 |
| Aluminum alloy: 5000 series | 6-32 8-32 10-24 1/4-20 5/16-18 | 3.5 7.5 10 40 70 | 375 585 735 1360 2300 | 235 365 460 850 1400 |
| Brass: 70-30 65-35 | 6-32 8-32 10-24 1/4-20 5/16-18 3/8-16 | 8 16 18.5 61 102 150 | 600 860 1040 1950 3280 4800 | 390 560 680 1275 2140 3160 |
* These values should develop fastener tension to slightly less than yield point and should be used only as a guide.
* The basic specifications shown above cover typical mechanical property values of Sunbelt studs.
Threads - Standard threads are UNC-2A for male threads, UNC-2B for female. Some sizes are also stocked in UNF-2A and 2B sizes. Other thread classifications are available on special order. Whenever possible, all studs are thread rolled.
Plating - Zinc plating is available according to ASTM-A 164-55 RS. Other plating materials available on request. Plating is removed from the weld base to prevent contamination on all studs except 10 gauge pins.
Annealing - Sunbelt arc welding studs can be annealed to a maximum of 75 Rockwell B for low carbon steel; 90 Rockwell B for stainless steel.
Flux - Except for some studs less than 5/16" diameter, all studs are solid fluxed at the center of the weld base.
Ferrules - All orders include ferrules when required. Ferrules are supplied with the studs and are not sold individually.
The provided performance data is intended as guideline for specifications and strengths only and is based on assumptions of general and reasonable use. Performance suitability for any specific application should be determined by the user.
