MAGNUM® MH1338B Screw Pile Extension, 10 feet Long, with 30S Helix

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13.38 in O.D. Round Shaft 0.38 in x Wall, Bolted Coupling , 5/8 in Helix Thickness, NA Pitch (S= Single Cutting, D= Dual Cutting) – Made to Order

SKU: MHE1338B10M30S_ Category:


MAGNUM® MH1338B Screw Pile Extensions have 200 tons ultimate and 100 tons allowable capacity in compression and tension. Lead sections and extensions couple together to reach the desired bearing stratum. Round shafts offer increased lateral and buckling resistance compared to solid square shafts. Capacity shown is based on minimum design lifespan of 75 years for most soil conditions. Patented Magnum Dual-Cutting Edge helical bearing plates (DCE) enhance penetration through dense soils with occassional cobbles and debris. Custom lengths and helix configurations are available upon request. See Magnum® Catalog and Magnum® Design Tools for additional information including sizing calculators, prescriptive specifications, and example plans. Capacity in soil and bedrock can be verified by installation torque correlations. See installation and design resources for more information. NOTE: Stock is limited. Contact a Magnum representative regarding pricing and availability for this product.

Additional information

Weight 767 lbs
Dimensions 120 × 30 × 30 in
Pile Size

13.38 in O.D. Round


0.38 in





Leads / Extension




Shaft Steel

API Grade J55 – 55KSI, or Equivalent

Max Torque

199000 ft-lbs

Capacity Torque Ratio

na ft-1

Capacity (tons)

Helix Thick

5/8 in

Helix Config




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