Description
Phillips Industries 16-724 STA-DRY 7-way tractor / trailer electrical socket with split-pin bullet terminals (0.180 in) and 2-hole flange mount. Built to SAE J560 with a glass-filled DuPont Super-Tuff Nylon housing, stainless steel hinge pin and spring, and a full-opening weather-tight lid. Drop-in compatible with Phillips QCS2 quick-change harnesses (PHI16-7403) for tool-free socket replacement on Class 8 tractors.
Specifications
| Manufacturer | Phillips Industries |
|---|---|
| Part Number | 16-724 |
| Part Type | 7-Way Trailer Electrical Socket (STA-DRY) |
| Terminal Type | Split Pin (Bullet), accepts 0.180 in bullets |
| Mounting | 2-Hole flange |
| Housing | Glass-Filled DuPont Super-Tuff Nylon |
| Hinge / Spring | Stainless Steel |
| Standard | SAE J560 |
| QCS2 Compatible | Yes — pairs with PHI16-7403 harness |
Cross References
This part replaces or is equivalent to the following part numbers:
- Phillips: 16-724-1, PHI16-724
- Tectran: 670-75, 670P-75
- Velvac: 055062
- Grote: 38298
- Automann: AUMPHI16-724
- Fruehauf: 42034683
SAE J560 Pin Functions
- Pin 1 — Ground (white)
- Pin 2 — Clearance / marker / ID lights (black)
- Pin 3 — Left turn / hazard (yellow)
- Pin 4 — Stop lights (red)
- Pin 5 — Right turn / hazard (green)
- Pin 6 — Tail lights (brown)
- Pin 7 — ABS power / auxiliary (blue)
Applications
Used as the tractor-mounted SAE J560 7-way trailer-cable socket on Class 8 tractors and select Class 6–7 straight trucks. Representative vehicles:
- Freightliner Cascadia, Columbia, Century, Coronado, M2, FLD
- Kenworth T680, T880, T800, W900, T660, T370
- Peterbilt 579, 389, 388, 387, 386, 379, 367
- International LT, LoneStar, ProStar, 9900, 9400
- Volvo VNL, VNR, VNM, VHD
- Mack Anthem, Pinnacle, Granite, CXU, GU
- Western Star 4900, 5700, 4700
For matching 7-way plugs, see Phillips 15-730 / 16-730 series. Apply dielectric grease at terminals to prevent corrosion.


