Special shoulder bolt
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The body portion is polished to support fitting tolerances. It is used for slip prevention and positioning by fitting into reamed holes. The purposes of use are positioning of machine parts, joints, etc.
Example: Connection of flanged rigid shaft couplings
Shoulder bolts (stripper bolts) with similarly polished bodies used for press molds also exist. Reamer bolts are used for holding stripper plates. The body portion is larger than the nominal diameter of the screw, and it is around 1.3 times as large as the nominal diameter of the screw in general.
Finished with S45C, SCM435, stainless steel, etc., and features heat treatment (strength category 10.9 with SCM435) and surface treatment (blackening, trivalent chromate) for corrosion control according to the required strength. We support nonstandard sizes and fitting of shafts according to the reamer bore, as well as supporting hexagonal-heads, round heads, hexagon sockets, knurls, and so forth. Please consult us for further details
The points for use in manufacturing:
- Attention is required for occurrence of distortion by heat when heat treatment is performed.
- The dimensions change according to the film thickness of the plating after polishing. Cutting should be conducted estimating such changes.
- If strength is important during plating, baking is required.
There are various problems that may occur according to the shapes and specifications. Please consult us when considering the specifications.
