About Oil Fittings and Oil Cups
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Vacuum Cup Levelers

Also known as spring plungers, these fittings are spring-loaded to accommodate items with variable heights. Tighten the mounting nuts to secure the leveler in a panel or bracket.
For technical drawings and 3-D models, click on a part number.
Body | ||||||||||||
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Stroke Lg. | Overall Lg. | Lg. | Dia. | For Max. Panel Thick. | Thread Size | Pipe Size | Thread Type | Gender | Material | Wt. | Each | |
3/8" | 2" | 29/32" | 5/16" | 0.7" | M5 | __ | Metric | Male × Female | Nickel-Plated Brass | 0.05 lbs. / 0.02 kg | 0000000 | 000000 |
1/2" | 3 3/8" | 1 31/32" | 1/2" | 1.6" | M8 | 1/8 | Metric × BSPT | Male × Female | Nickel-Plated Brass | 0.18 lbs. / 0.08 kg | 0000000 | 00000 |
7/8" | 3 1/2" | 1 31/32" | 1/2" | 1.6" | M8 | 1/8 | Metric × BSPT | Male × Female | Nickel-Plated Brass | 0.18 lbs. / 0.08 kg | 0000000 | 00000 |
7/8" | 3 1/2" | 2" | 5/16" | 1.8" | M5 | __ | Metric | Male × Female | Nickel-Plated Brass | 0.08 lbs. / 0.04 kg | 000000 | 00000 |
Grease Cups

Fill the cover with grease and then screw it onto the bowl. As you tighten the cover, grease is squeezed out of the bowl and into your joint, bearing, or equipment.
Grease Outlet | ||||||||||
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Cap., fl. oz. | Bowl Dia. | Overall Ht. | Thread Type | Pipe Size | Gender | Bowl Material | Loading Method | Temp. Range, °F | Each | |
3/64 | 5/8" | 1 1/4" | NPT | 1/8 | Male | Zinc-Plated Brass | Grease Gun, Hand Pack | -40° to 355° | 0000000 | 000000 |
Oil Fittings
Zinc-plated brass fittings have good corrosion resistance. Nickel-plated brass fittings are more corrosion resistant than zinc-plated brass fittings.
Fitting with a check valve prevents oil from leaking when pressure causes backward flow. The valve stays closed when not in use to keep out dirt and other contaminants. UNF and UNEF threads are similar to threads on a machine screw or bolt. They require a sealant, such as an O-ring, to minimize leakage.
Note: Fittings do not hold oil; any oil dispensed into the fittings passes into the part to be lubricated.


Each | |||||||
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Material | Overall Ht. | Shank Lg. | Thread Lg. | Installation Clearance | 1-9 | 10-Up | |
1/4"-32 Male UNEF Threads | |||||||
Zinc-Plated Brass | 7/16" | 7/32" | 7/32" | 3/8" | 000000 | 000000 | 000000 |