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// TECHNICAL RESOURCES

Shoulder Screws.

A family reference for specification-controlled hardware. Identify the relevant series and the details needed to source the required part.

// DIMENSION GUIDE

Shoulder diameter and shoulder length

Shoulder diameter and shoulder length
S is the smooth shoulder length from beneath the head to the shoulder transition. D is shoulder diameter. T marks the threaded-end section to the tip; its details and runout follow the selected specification.

Schematic only; not to scale. Letter labels are keys for this illustration. Use the applicable part specification for dimensions, tolerances and measurement conventions.

// IDENTIFICATION

Measure the shoulder, not just the thread.

The smooth shoulder provides a locating or bearing surface. Its diameter and length are separate from the threaded end, so a thread-size match alone does not define the same component.

MS51575 is a slotted family; MS51576 uses a hex socket. Matching dash numbers do not always select matching shoulder lengths across these two series.

// REFERENCE TABLE

Series in this family

Shoulder screws series directory
SeriesProduct descriptionFamilyResource
MS51575Slotted precision shoulder screwsShoulder screwsRead guide →
MS51576Hex socket precision shoulder screwsShoulder screwsRead guide →

// PREPARE AN RFQ

What to confirm on the drawing

Shoulder diameter and length; drive; male thread; head clearance; bearing surface and tolerances.

// REFERENCE SCOPE

Reference scope

The table groups hardware by catalog family. It does not certify dimensions or current stock. For a document-level status finding, use the cross-reference page; for a dimensional table, use the linked guide.

// SOURCE WITH WEBSON

Have a part number or bill of material?

Send the complete designation, quantity, required delivery date and documentation requirements. Webson will review your requirement for quotation.