Specialist Test Products > Kelvin Test Probes > PK4 Series >

A range of concentric test probes intended specifically for making 4 to 6 pole (Kelvin) tests on PCBs, bus bars, equipment chassis and screw heads. A wide range of tip styles is available including sharp inner and outer probes for contact problem areas and concaved outer designed for contacting pan-head screws. This range makes low resistance measurements very easy. Contact us regarding our high current/heavy duty range.

Test Probe Specification

Full travel (outer)
7.0mm
Recommended travel
4.0mm
Spring force at F.T.
460g
- Except PK4QB-3.5, PK4M2J
250g
Maximum current (outer)
10 Amp
Drill hole size for probe
4.20mm

Receptacle Specification

Optional receptacle part no: RK4
Drill hole size for receptacle: 4.80mm

See receptacles at bottom of page

For pricing, availability or to place an order
click on a part no. below

Tip Style

SERRATED/SPEAR

SERRATED/SPEAR

PK4HB

Tip Style

CROWN/SERRATED

CROWN/SERRATED

PK4QH

Tip Style

CROWN/SPEAR

CROWN/SPEAR

PK4QB-3.5

Tip Style

CROWN/SPEAR

CROWN/SPEAR

PK4QB-5.0

Tip Style

SERRATED/SERRATED

SERRATED/SERRATED

PK4HH

Tip Style

M2 PAN HEAD SCREWS

M2 PAN HEAD SCREWS

PK4M2J

Receptacle

RECEPTACLE

RECEPTACLE

RK4