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Other Fasteners
Precision shoulder screws whose ground shank acts as a locat
Metric Precision Hex Socket Shoulder Bolts
- 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 TypeHex Socket
- Head stylehex head
Product overviewOverview
A shoulder screw separates two functions: the ground shank locates, and the thread clamps. The shank is held to a close tolerance (h9 is common) for a clearance fit in the mating bore and carries radial location; the thread is smaller than the shank so it never touches the bore and only generates clamp force. Position accuracy therefore comes from the shank fit, not from the thread.
installed by shank locates in the bore, thread clamps.
Key featuresFeatures
- The shank is ground to h9, giving a close running fit in a reamed hole without perceptible play.
- Thread smaller than the shank so it never contacts the bore.
- Coaxiality between shank and thread is held so the clamped part stays square to the bore instead of cocking.
- The shoulder face is square to the shank, so the clamp force acts along the axis with no bending moment on the screw.
Typical applicationsApplications
- Hinges and flip mechanisms
- Linkages and swing arms
- Mould guide-pin location
Selection notesSelection
Shank length should slightly exceed the clamped part thickness; too long bottoms out, too short gives insufficient location.
Frequently asked questionsFAQ
How do I specify the Metric Precision Hex Socket Shoulder Bolts?
What matters during installation of the Metric Precision Hex Socket Shoulder Bolts?
| Drive Type | Hex Socket |
|---|---|
| Standard | GB/T 197, customer drawing (h9 shank) |
| Head style | hex head |
| Drive | hex socket |
| Installation | shank locates in the bore, thread clamps |
| Typical substrate | hinges, pivots, locating mechanisms |
| Key inspections | shank diameter, coaxiality, squareness |
Shank diameter measured by micrometer at high sampling rate against h9.We recommend a pilot assembly at the actual torque and mating part before locking the process parameters for volume.
