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Button Socket Cap Screws

Button Socket Cap Screws

Button socket cap screws are favored not only for their practicality but also for their aesthetic appeal, making them ideal for use when the screw head is visible outside the assembly. Additionally, they are selected when clearance is restricted, and a socket drive is necessary. However, it’s important to note that due to their sleek design, button sockets may not handle as much stress as socket head cap screws, as their heads are comparatively smaller.

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Specifications & Technical Data

Dimensions

Nominal Size A H S J T F L Tensile Test Load Single Shear Strength of Body Seating Torques in./lbs.
Head Diameter Head Height Head Side Height Hex Socket Size Key Engagement Fillet Transition Diameter Max Standard Length
Max Min Max Min Ref Nom Min Max Min Nom Lb. Lbs., Min. Coarse Thread Fine Thread
4 0.213 0.201 0.059 0.051 0.015 1/16 0.035 0.132 0.122 0.50 840 950 7.0 8.
6 0.262 0.250 0.073 0.063 0.015 5/64 0.044 0.158 0.148 0.63 1,260 1,400 13. 15.
8 0.312 0.298 0.087 0.077 0.015 3/32 0.052 0.194 0.184 0.75 1,940 2,000 25. 26.
10 0.361 0.347 0.101 0.091 0.020 1/8 0.070 0.220 0.210 1.00 2,440 2,700 45. 48.
1/4 0.437 0.419 0.132 0.122 0.031 5/32 0.087 0.290 0.280 1.00 4,430 4,700 95. 110.
5/16 0.547 0.527 0.166 0.152 0.031 3/16 0.105 0.353 0.343 1.00 7,300 7,300 190. 210.
3/8 0.656 0.636 0.199 0.185 0.031 7/32 0.122 0.415 0.405 1.25 10,800 10,600 300. 300.
1/2 0.875 0.851 0.265 0.245 0.046 5/16 0.175 0.560 0.540 2.00 19,800 18,800 900. 960.
5/8 1.000 0.970 0.331 0.311 0.062 3/8 0.210 0.685 0.665 2.00 31,500 29,400 1,700. 1,900.

 

Button Socket Cap Screw Specifications

  • Standard (ASME/ANSI)
    • ASME B18.3-1998
  • Metric (IFI)
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Industries We Serve

Nickel Systems provides high quality exotic grade materials that hold up in the toughest, most severe heat and corrosive environments. With our large inventory of specialty fasteners in stock, we are always ready to answer the call to serve the most challenging applications.

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