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Other Fasteners
Shoulder screws with an h9 shank for hinges and pivot joints
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Hexalobular (Torx) Socket Head Shoulder Screw
Shoulder screws with an h9 shank for hinges and pivot joints.
Key specifications
- Installationshank locates in the bore, thread clamps
- StandardGB/T 197, customer drawing (h9 shank)
- Typical substratehinges, pivots, locating mechanisms
- Key inspectionsshank diameter, coaxiality, squareness
- Drive TypeTorx T
- Head stylehex head
Product overviewOverview
The critical characteristics are shank diameter, coaxiality between shank and thread, and squareness of the shoulder face to the shank. Poor coaxiality tilts the assembled part; a non-square shoulder introduces a bending moment that makes a pivot stiff to turn.
installed by shank locates in the bore, thread clamps.
Key featuresFeatures
- Because the Torx recess and the shank are machined on one axis, tightening does not tilt the part being located.
- The head shoulder bears squarely against the part, keeping the clamp load axial.
- Hex socket allows higher torque in confined spaces.
- A ground h9 shank runs in its bore with a light clearance, which is what a pivot or locating application needs.
Typical applicationsApplications
- Linkages and swing arms
- Mould guide-pin location
- Automation pivot shafts
Selection notesSelection
Match bore tolerance to the shank: H8/h9 is a common clearance pairing.
Frequently asked questionsFAQ
How do I specify the Hexalobular (Torx) Socket Head Shoulder Screw?
Match bore tolerance to the shank: H8/h9 is a common clearance pairing. installed by shank locates in the bore, thread clamps.
What matters during installation of the Hexalobular (Torx) Socket Head Shoulder Screw?
Locate the shank in the bore, then clamp on the thread. Because the Torx recess and the shank are machined on one axis, tightening does not tilt the part being located.
Specifications
| Drive Type | Torx T |
|---|---|
| Standard | GB/T 197, customer drawing (h9 shank) |
| Head style | hex head |
| Drive | star recess |
| Installation | shank locates in the bore, thread clamps |
| Typical substrate | hinges, pivots, locating mechanisms |
| Key inspections | shank diameter, coaxiality, squareness |
Manufacturing and inspection
Coaxiality and squareness sampled on a runout fixture or CMM.Alternative materials and finishes can be quoted side by side during sampling, so cost and corrosion resistance can be traded off explicitly.
