M.D. Hubbard Spring Company
M.D. Hubbard Spring Company
595 S. Lapeer Road P.O. Box 425 Oxford, MI 48371
Phone: 248-628-2528
Fax: 248-628-7734
E-Mail: info@companies.com
Website: www.hubbardspring.com
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Blanked edge Welch Plugs are engineered to seal core holes in castings with plug sizes ranging from 0.125” to 4.500”.

  • Good for limited depth and lower-pressure applications.
  • Best used as cover or to retain liquid at low or no pressure.

 
Unit of Measure

Technical Specs

Part Number

 N/A HP-516-S-39-EZ

Hole Diameter

 N/A 0.522 in

Outside Diameter

 N/A 0.516 in.±0.003 in.

Spherical Radius

 N/A 0.562 in

Material Type

 N/A Cold Rolled Steel

Material Specification

 N/A SAE J403 - 1008/1010

Temper

 N/A No. 2 (Half Hard) - ASTM A109

Material Thickness

 N/A 0.039 in.±0.0015 in.

Finish Type

 N/A Electro Plated Zinc - ASTM B633 SC1 type "V" - 0.0002" Minimum (72 salt spray hours)