Hillman Stainless Steel Oval Head Phillips Machine Screw, 1/4-Inch x 1-Inch - 100 Pack Mountaineering a patented injection moulded diaphragm

a patented injection moulded diaphragm and large heavy duty motor brushes which significantly extends the pump life by up to 50%

but it's better in oh-so-many ways

- Elasticated back waistband

Anti-snagging slider cover

Style: SW001177

Hillman Stainless Steel Oval Head Phillips Machine Screw, 1/4-Inch x 1-Inch - 100 Pack Mountaineering a patented injection moulded diaphragmMachine screws are used with nuts or screwed directly into a threaded receptacle to fasten metal parts together. Measured from the underside of the head to the tip of the screw to obtain fastener length. If nuts are needed, use with nuts of the same finish and threading for proper fit.