Ball Plungers
Spring Loaded Ball Plunger Supplier
Spring loaded ball plunger supplier - HRSM (black oxide) and HRSU (stainless) series with M4 to M16 threads and load capacity up to 9.6 kN. Wholesale supply with OEM/ODM customization.
Specifications
- Type
- Spring loaded ball plunger
- Series
- HRSM (black oxide) and HRSU (stainless steel)
- Thread sizes
- M4, M5, M6, M8, M10, M12, M16 (coarse thread)
- Load capacity
- 1.3 - 9.6 kN by size
- Materials
- HRSM: SCM435 body, SUJ2 ball; HRSU: SUS304 equivalent body, SUS440C ball
- Ball hardness
- 55 HRC or higher
- Customization
- OEM/ODM to drawing or sample
- Brand
- SKN Fastener Co., Ltd.
- Origin
- Made in Shenzhen, China
- Quotation
- Send drawing or sample to sales@sknfastener.com
Overview
A spring loaded ball plunger pushes a steel ball into a mating groove with spring force, holding parts in position until a set force moves them. The HRSM series uses a black oxide coated body, and the HRSU series uses a stainless steel body. Both have a hexagon socket for adjustment.
Available Sizes and Options
Seven coarse-thread sizes from M4 to M16, with load capacities from 1.3 kN to 9.6 kN. Several standard sizes are marked as stock items on the specification sheet. Custom sizes and thread styles are quoted from your drawing under our OEM/ODM service.
Spring loaded ball plunger dimensions (mm) and load capacity (kN).
M | L1 | A | E | B | C | d1 | d2 | S | S1 | Load capacity (kN) |
|---|---|---|---|---|---|---|---|---|---|---|
M4 | 2.1 | 7 | 4 | 3 | 2 | 2.5 | 2 | 0.8 | 0.3 | 1.3 |
M5 | 2.4 | 8.5 | 5 | 4 | 2.5 | 3 | 2.5 | 1 | 0.4 | 1.4 |
M6 | 3 | 10 | 6 | 5 | 3 | 4 | 3.2 | 1.3 | 0.6 | 3.3 |
M8 | 3.5 | 13 | 8 | 6 | 4 | 5.5 | 4.5 | 1.8 | 0.8 | 3.9 |
M10 | 4.5 | 16 | 10 | 8 | 5 | 7 | 6 | 2.3 | 0.8 | 3.4 |
M12 | 5 | 18 | 12 | 10 | 6 | 8.5 | 7.2 | 2.8 | 1 | 4.8 |
M16 | 6 | 24 | 16 | 14 | 8 | 12 | 10.7 | 4.3 | 1.3 | 9.6 |
Materials and Finishes
HRSM: SCM435 body with black oxide protective coating, SUJ2 ball with a hardness of 55 HRC or higher. HRSU: stainless steel body (SUS304 equivalent), SUS440C ball with a hardness of 55 HRC or higher. Special materials follow your drawing.
Applications
Machine builds, fixtures, jigs, and adjustable stops where parts are held under spring force. SKN fasteners serve six industries: manufacturing, aviation equipment, industrial equipment, medical devices, stage and entertainment, and the marine industry.
Buyer FAQs
Q: What information do you need to quote?
A: The series (HRSM or HRSU), thread size (M4 to M16), length, and quantity. A drawing or sample speeds everything up.
Q: Can you manufacture from a drawing or sample?
A: Yes. Send the drawing or sample and we manufacture to match under our OEM/ODM service.
Q: Do you supply bulk orders worldwide?
A: Yes. We supply B2B customers, wholesalers, and OEM clients worldwide from Shenzhen with export packing.
