Recommended Torque: As Per AIR6151
Recommended torque for accessories such as those defined in SAE AS85049 to connector rear threads are listed in Table -1 .
Column 1 is for Aluminum medium and light duty accessories including connector series;
- AS50151 (AS31001 Series)
- MIL-DTL-26482 Series 1
- MIL-DTL-26500 MIL-DTL-27599
- MIL-DTL-38999 Series I and II
- MIL-C-81511 Series 1, 2, 3, 4
- AS81703 Series 1
Column 2 is for Aluminum heavy duty accessories including connector series;
- AS50151 (AS34001 Series)
- MIL-DTL-22992
- MIL-DTL-26482 Series 2
- MIL-DTL-28840
- MIL-DTL-38999 Series III and IV
- AS81703 Series 3
- MIL-DTL-83723 Series I, II, III
Column 3 is for accessories with composite (high grade engineering thermoplastic) material coupling threads.
Column 4 is for accessories with Aluminum coupling threads used in high vibration (engine) applications.
Column 5 is for accessories with corrosion resistant steel coupling threads used in high vibration (engine) applications.
Backshell Coupling Torque
Table-1
| Connector Shell Sizes | Column 1 | Column 2 | Column 3 | Column 4 | Column 5 |
|---|---|---|---|---|---|
| In-Lbs Min/Max | In-Lbs Min/Max | In-Lbs Min/Max | In-Lbs Min/Max | In-Lbs Min/Max | |
| 8, 9, A | 30/40 | 51/61 | 20/25 | 66-77 | 91-101 |
| 3, 10, 10SL, 11, B | 30/40 | 71/81 | 20/30 | 103-113 | 115-125 |
| 7, 12, 12S, 13, C | 35/45 | 103/113 | 25/35 | 115-125 | 115-125 |
| 14, 14S, 15, D | 35/45 | 111/121 | 25/35 | 139-149 | 139-149 |
| 16, 16S, 17, E | 35/45 | 111/121 | 30/40 | 139-149 | 139-149 |
| 18, 19, 27, F | 35/45 | 111/121 | 30/40 | 139-149 | 175-185 |
| 20, 21, 37, G | 75/85 | 131/141 | 35/45 | 175-185 | 199-209 |
| 22, 23, H | 75/85 | 131/141 | 35/45 | 175-185 | 223-233 |
| 24, 25, 61, J | 75/85 | 131/141 | 35/45 | 175-185 | 259-269 |
| 28, 29 | 115/125 | 143/153 | 115/125 | 187-197 | 307-317 |
| 32, 33 | 115/125 | 143/153 | 115/125 | N/A | N/A |
| 36 | 115/125 | 142/153 | 112/125 | N/A | N/A |
| 40 | 155/165 | 159/169 | N/A | N/A | N/A |
| 44 | 155/165 | 159/169 | N/A | N/A | N/A |
| 48 | 155/165 | 159/169 | N/A | N/A | N/A |
Screw Torque
Recommended torque for corrosion resistant or plated steel screws is listed in Table 2.
Column 1 is for standard installation into aluminum or corrosion resistant steel.
Column 2 is for installation into composite material regardless of thread length or aluminum material with less than 3 full threads of engagement.
Column 3 is for installation in high vibration (engine) areas, clinch nuts and ground straps.
Table-2
| Screw Size | Column 1 | Column 2 | Column 3 |
|---|---|---|---|
| In-Lbs Min/Max | In-Lbs Min/Max | In-Lbs Min/Max | |
| 2-56 | 1.5/2.5 | 1.2/2.0 | 2.0/2.5 |
| 4-40 | 3.5/4.5 | 2.8/3.6 | 3.5/4.5 |
| 6-32 | 5.0/7.0 | 4.0/5.6 | 5.5/6.5 |
| 8-32 | 7.0/9.0 | 5.6/7.2 | 7.5/8.5 |
| 10-32 | 9.0/11.0 | 7.2/8.8 | 8.5/10.5 |
| 0.250-20 | 11.0/13.0 | 8.8/10.4 | 10.5/15.5 |
Secondary Adapter and AS Cable Clamp Torque
Recommended torque for aluminum and corrosion resistant steel secondary adapters and AS85049/41 and /42 type cable clamps are listed in Table 3.
Cable clamps that utilize elastomeric sealing grommets such as AS85049/1 and /2 need adaquate torque applied to assure proper cable sealing but not over torqued to the extent that the sealing grommet extrudes.
For all assemblies where metal braided RFI/EMI shielding is terminated using conical metal ferrule(s), the minimum recommended torque is 35 in-lb.
Table - 3
| Clamp Size / Dash No. | Torque |
|---|---|
| In-Lbs Min/Max | |
| 3 | 30/40 |
| 4 | 30/40 |
| 6 | 35/55 |
| 8 | 35/55 |
| 10 | 35/55 |
| 12 | 40/60 |
| 16 | 40/60 |
| 20 | 40/60 |
| 24 | 80/100 |
| 28 | 80/100 |
| 32 | 80/100 |
| 40 | 80/100 |
