Installation guide

Torque Values
A-4 Specifications
Torque Values
Thefollowingtabledescribestherecommendedtorquevaluestousewheninstallingthe
SecureStackswitchusingstandardthreadedfastenermachinescrewsandbolts.
Regulatory Compliance
TheA2H123‐24meetsthesafetyandelectromagneticcompatibility(EMC)requirements
listedinTable A‐5:
Table A-4 Recommended Torque Values by Screw Size
Screw Size Torque in Pounds Bit Size
English Metric -%5 Nominal +%5
N/A N/A 1.42 1.5 1.57 0
2 – 56 1.5 2.85 3.0 3.15 0
4 – 40 2.5 4.75 5.0 5.25 0/1
6 – 32 3.5 8.55 9.0 9.45 1
8 – 32 4.5 17.10 18.0 18.90 2
10 – 32 5 30.40 32.0 33.60 2
1/4 – 20 6.5 63.65 67.0 70.35 3
Table A-5 Compliance Standards
Regulatory Compliance Standards
Safety UL 60950, CSA C22.2 No. 60950, 73/23/EEC, EN 60950,
IEC 60950, EN 60825, 21 CFR 1040.10
Electromagnetic Compatibility
(EMC)
47 CFR Parts 2 and 15, CSA C108.8, 89/336/EEC,
EN 55022, EN 61000-3-2, EN 61000-3-3, EN 55024,
AS/NZS CISPR 22, VCCI V-3