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Locking Products
Star recess screws with face-to-face bit contact, reducing h
Torx pan head screw with captive washer and locking patch
- Installationstar bit in an electric driver
- StandardGB/T 3098.1, GB/T 197
- Typical substrateprecision electronics and robot joints
- Key inspectionsrecess dimensions, torque, thread gauging
- Drive TypeTorx T
- Head stylepan head
Product overviewOverview
A star recess has six curved lobes, and the bit contacts the walls over an area rather than at four points. For the same torque the pressure on each lobe is lower, so the recess survives longer — a decisive advantage at M1 scale, where a chewed recess scraps the part. The lobed shape also self-aligns: the bit slides into position even with a small angular offset.
installed by star bit in an electric driver.
Key featuresFeatures
- Options include pre-applied locking patch, decorative PVD and zinc-nickel corrosion protection.
- 6g threads, gauged 100%, so vibratory feeding runs without jams.
- Six-lobe face contact lowers stress concentration compared with a cross recess.
- Self-aligning recess suits robotic driving and high-cycle automated assembly.
Typical applicationsApplications
- Precision gearboxes and servo motor end caps
- Automotive electronic control units
- Premium appliance control boards
Selection notesSelection
Match bit to recess type: an enhanced recess with a standard bit has too little engagement height and will cam out.
Frequently asked questionsFAQ
How do I specify the Torx pan head screw with captive washer and locking patch?
What matters during installation of the Torx pan head screw with captive washer and locking patch?
| Drive Type | Torx T |
|---|---|
| Standard | GB/T 3098.1, GB/T 197 |
| Head style | pan head |
| Drive | star recess |
| Installation | star bit in an electric driver |
| Typical substrate | precision electronics and robot joints |
| Key inspections | recess dimensions, torque, thread gauging |
Mechanical properties are sampled to GB/T 3098.1; parts at risk of hydrogen embrittlement are tested to GB/T 3098.17.Material certificates and dimensional records accompany each lot; material and dimensional records are supplied per batch.
