NW Ball Plungers
NW ball plungers—also called spring plungers or detent plungers—are spring-loaded components used to create a repeatable detent, indexing point, or light holding force in fixtures and mechanical assemblies (application dependent). They’re commonly used to locate adjustable parts, provide “click-stop” positioning, and maintain consistent engagement in guards, covers, slides, and modular workholding setups. Because the feel and retention depend heavily on spring force and ball size, ball plungers are typically selected by specification.
NORTHWESTERN TOOLS 10636 Press-Thru-Ball-Plunger / Delrin Ball / Heavy Pressure: End Pressure (Lbs): 4.0 Start, 10.0 Full; A: .188; B: .440; C: .058; Ball Dia. D: .156
SKU: NW-10636
MPN: 10636
NORTHWESTERN TOOLS 10637 Press-Thru-Ball-Plunger / Delrin Ball / Heavy Pressure: End Pressure (Lbs): 6.0 Start, 13.0 Full; A: .250; B: .525; C: .070; Ball Dia. D: .187
SKU: NW-10637
MPN: 10637
NORTHWESTERN TOOLS 10638 Press-Thru-Ball-Plunger / Delrin Ball / Heavy Pressure: End Pressure (Lbs): 8.0 Start, 16.0 Full; A: .312; B: .688; C: .090; Ball Dia. D: .250
SKU: NW-10638
MPN: 10638
NORTHWESTERN TOOLS 10639 Press-Thru-Ball-Plunger / Delrin Ball / Heavy Pressure: End Pressure (Lbs): 10.0 Start, 18.0 Full; A: .375; B: .864; C: .110; Ball Dia. D: .312
SKU: NW-10639
MPN: 10639
NORTHWESTERN TOOLS 10640 Press-Thru-Ball-Plunger / Delrin Ball / Heavy Pressure: End Pressure (Lbs): 12.0 Start, 23.0 Full; A: .500; B: 1.218; C: .161; Ball Dia. D: .437
SKU: NW-10640
MPN: 10640