How to find the right Shoulder Screws AI guide
Written by an AI model from its trained knowledge.
What the AI looks for in Shoulder Screws
- Shoulder dimensions
- Specify shoulder diameter and shoulder length separately; the thread is one size smaller than the shoulder. Shoulder screws are named by shoulder, not by thread.
- Precision
- Use precision-ground shoulders to ISO 7379 or ASME B18.3 for pivots and bushings. Loose tolerances cause wobble and wear.
- Bearing fit
- Match the shoulder length to the stack of the rotating part plus a small clearance. Too short binds the part, too long lets it rattle.
- Material
- Use alloy steel for load-bearing pivots and stainless for wet environments. The two differ in strength and corrosion resistance.
Brands that matter
- Holo-Krome: Socket shoulder screws.
- Unbrako: Precision shoulder screws.
- Misumi: Configurable precision shoulder components.
What to avoid
- Ordering by thread size, a common mismatch.