Properly torqueing of threaded RF coaxial connectors is essential for reliable, maximum performance interfaces.
It not only ensures that the initial contact is proper, it also protects against changes in geometry during handling
and operational environment conditions.
| Type DIN 7-16 |
3500/310 |
27 & 32 mm |
| Type F (75 ohm) |
168/15 |
7/16 |
| Type FD |
168/15 |
|
| 7 mm (APC-7) |
135/12 |
3/4 in (19 mm) |
| Type N 50/75 ohm |
135/12 135/12 |
25/32 in (20 mm) 3/4 in (19 mm) |
| 3.5 mm |
90/8 |
8 mm |
| 2.4 mm |
90/8 |
8 mm |
| 2.92 mm (K) |
90/8 |
8 mm |
| 1.85 mm (V) |
90/8 |
5/16 in (8 mm) |
| SMA, OSM |
45/4 (economic) 100/9 (standard) 195/17 (hermetic) |
5/16 in (8 mm) 5/16 in (8 mm) 7 mm |
| SSMA |
70/6 |
0.25 |
| SMC |
35/3 |
6 mm |
| TNC |
56/5 |
9/16 (15 mm) |
| 1.0 mm |
45/4 |
6 mm |
|
These values were originally pulled from Agilent's calibrated torque wrench page, but it
has disappeared. Additional information gathered from other online sources such as the Huber+Suhner and Radiall
websites. Torque values can vary considerably between vendors. 1 lb-in = 11.30 N-cm
Fairview Microwave sells calibrated torque wrenches.
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Related Pages on RF Cafe - RF Coaxial
Connector Torque Specifications - Coaxial Connector
Descriptions & Drawings - Coaxial Connector
Usage Properties - RF Coaxial Connector Torque Specifications
- Connector & Adapter Manufacturers -
EW Radar Handbook - Connectors
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