
Description
The A99SMA is used to cover the larger mounting hole required for the SM99. Once covered, the A400SM may be installed for use with a Shure MX400 series microphone.
| Outer diameter | 3.012 inches |
| Diameter of hole in the middle | 1.75 inches |
| Diameter of three outermost screw holes | 0.17 inch; center of each is 0.25 inch inward from the outer diameter; screw holes are separated by 120 degrees; holes are countersunk to accept #8 flat head screw |
| Thread for three innermost screw holes | #8-32 UNC-2B; used to fasten the Shure A400SM shock mount |
| Plate thickness | 0.12 inch |
The A99SMA is used to cover the larger mounting hole required for the SM99. Once covered, the A400SM may be installed for use with a Shure MX400 series microphone.
| Outer diameter | 3.012 inches |
| Diameter of hole in the middle | 1.75 inches |
| Diameter of three outermost screw holes | 0.17 inch; center of each is 0.25 inch inward from the outer diameter; screw holes are separated by 120 degrees; holes are countersunk to accept #8 flat head screw |
| Thread for three innermost screw holes | #8-32 UNC-2B; used to fasten the Shure A400SM shock mount |
| Plate thickness | 0.12 inch |
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