// TECHNICAL RESOURCES
MS51575 precision shoulder screws.
Identify MS51575 slotted shoulder screws using nominal shoulder-diameter and length tables, related series comparisons and purchasing guidance.
// DIMENSION GUIDE
Shoulder diameter and shoulder length
Schematic only; not to scale. Letter labels are keys for this illustration. Use the applicable part specification for dimensions, tolerances and measurement conventions.
// IDENTIFICATION
What defines this shoulder screw?
The slotted drive distinguishes this series from the other precision shoulder family. The smooth shoulder is separately dimensioned from the male thread. Its length is measured from the bearing surface beneath the head to the shoulder transition.
Identify the selected shoulder diameter and length before comparing the threaded end. A thread match alone is insufficient to establish the same fit.
// SIZE TABLE
Nominal shoulder dimensions
Dimensions below are in inches and are nominal catalog references. Full tolerances, head details, material, finish and acceptance requirements remain controlled by the applicable standard and order. Search also accepts the thread sizes associated with these entries.
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| Catalog designation | Shoulder diameter (in) | Shoulder length (in) |
|---|---|---|
| MS51575-1 | 1/8 | 1/8 |
| MS51575-2 | 1/8 | 3/16 |
| MS51575-3 | 1/8 | 1/4 |
| MS51575-4 | 1/8 | 5/16 |
| MS51575-5 | 1/8 | 3/8 |
| MS51575-6 | 3/16 | 1/8 |
| MS51575-7 | 3/16 | 3/16 |
| MS51575-8 | 3/16 | 1/4 |
| MS51575-9 | 3/16 | 5/16 |
| MS51575-10 | 3/16 | 3/8 |
| MS51575-11 | 3/16 | 1/2 |
| MS51575-12 | 3/16 | 5/8 |
| MS51575-13 | 3/16 | 3/4 |
| MS51575-14 | 3/16 | 1 |
| MS51575-15 | 3/16 | 1-1/4 |
| MS51575-16 | 1/4 | 1/8 |
| MS51575-17 | 1/4 | 3/16 |
| MS51575-18 | 1/4 | 1/4 |
| MS51575-19 | 1/4 | 5/16 |
| MS51575-20 | 1/4 | 3/8 |
| MS51575-21 | 1/4 | 1/2 |
| MS51575-22 | 1/4 | 5/8 |
| MS51575-23 | 1/4 | 3/4 |
| MS51575-24 | 1/4 | 1 |
| MS51575-25 | 1/4 | 1-1/4 |
| MS51575-27 | 5/16 | 1/4 |
| MS51575-28 | 5/16 | 5/16 |
| MS51575-29 | 1/2 | 1/2 |
// COMPARISON
Check the matching dash number carefully
For example, MS51575-16 is cataloged with a 1/4-inch shoulder diameter and 1/8-inch shoulder length. MS51576-16 is cataloged with the same shoulder diameter but a 3/16-inch shoulder length. Do not carry a dash number across the series as an automatic conversion.
// STANDARD REFERENCE
Reference standard
The slotted shoulder-screw family is associated with NASM51575. Provide the full drawing callout when asking Webson to review the requirement.
// BUYER CHECKLIST
Prepare the requirement for quotation
- Complete designation, including all material, finish and locking suffixes.
- Quantity, required delivery date and controlling drawing or specification issue.
- Required certificates, source restrictions and lot traceability.
// 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.