Passivated Finish Ball Plunger Screw Spring Loaded M5 Hex Socket Set
A2 Stainless Steel Ball Plunger Screw Spring Loaded M5 Hex Socket Set Screws
Plunger screw is another name of set screw with ball point , it is one of the set screws or grub screws and specially designed for machinery like different molds or tools , clamps and assembly related location etc .
Plunger screws are comprised of a round ball ,screw and spring . spring is insert into screw hole and then a round ball is put into hole of screw under pressure .
Stainless steel plunger screws are used for medium heavy duty and do not need to be assembled working pieces seperately .
Material
Stainless steel A2-70
Finish
Passivaiton with ASTM A 967-2005
Surface requested
Roughness 3.2 , no burrs or scratch and no sharp edges .
Specific dimension
| Thread | |
| Length | |
| Ball diameter | |
| Socket depth | |
| Socket width |
More standard specifications
| Thread | Length | socket | ball diameter | ball head height |
| M3 | 3-6 | 1.5 | 1.5 | 0.5 |
| M4 | 5-10 | 2 | 2.4 | 0.65 |
| M5 | 8-12 | 2.5 | 2.5 | 0.8 |
| M6 | 10-16 | 3 | 3.5 | 1 |
| M8 | 10-20 | 4 | 5 | 1.5 |
| M10 | 16-25 | 5 | 6 | 1.8 |
| M12 | 18-36 | 6 | 8 | 2 |
For over M12 dimensions , can be refered to DIN 916 set grub screw
| d | p | t | S |
| 12 | 1.75 | 4.8 | 6 |
| 14 | 2 | 5.6 | 6 |
| 16 | 2 | 6.4 | 8 |
| 18 | 2.5 | 7.2 | 10 |
| 20 | 2.5 | 8 | 10 |
| 22 | 2.5 | 9 | 12 |
Mechanical Properties
| Hardness ( HV ) | 210 | Yield Strength ( Mpa ) | 320 | Elongation ( % ) | 35 |
| Tensile Strength ( Mpa ) | 560 | Torque | 8 | Reduction Area ( % ) | 45 |
Tips for use
1 . Stainless steel plunger screws can not be used for temperature over 250 degree .
2 . Not suitable for hard acid conditions
3 . Working load not exceed 7 N .
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