No-Dig Ground Anchor Steel Post Spike for 3.5 in Timber

No dig ground anchor helps you set a stable mailbox or fence post without digging deep holes, saving time while improving hold in soil. This screw-in post stake uses a U-shape steel post holder to support 3.5 in (89 mm) lumber, with a powder-coated finish for added corrosion resistance. Smooth, burr-free edges and an all-inclusive kit make DIY installation straightforward for repairs or new builds.

• Delivers fast setup with a screw-in ground spike design—ideal when you want to avoid messy post holes.


• Fits 3.5 in (89 mm) timber for common mailbox posts, fence posts, and outdoor sign posts.


• Includes lag bolts and threaded rebar to tighten the connection and reduce post wobble over time.


• Resists rust with a powder-coated steel finish to handle soil contact and wet weather exposure.


• Enables easy replacement by letting you swap out the wood post later without replacing the anchor.

Built from thickened steel to help resist bending and deformation, this DIY ground anchor is designed for dependable support in everyday outdoor projects. Use it as a mailbox post anchor, fence post stake, or post holder for garden structures where you need a firm, aligned install. Keep one on hand for quick repairs after storms or seasonal updates—grab yours today and get your next post set with less effort and cleaner results.

• Pack size: 1 anchor kit


• Product dimensions: 3.94 x 2.76 x 27.56 in (100 x 70 x 700 mm)


• Total height: 34 in (864 mm)


• Nail length: 22 in (560 mm) ±10 mm


• Fits lumber: 3.5 in (89 mm)


• Net weight (with accessories): 5.6 lb (2.54 kg)


• Material: steel; powder-coated finish


• Thickness: nail inner wall 2.2 mm; column fixing plate 3.0 mm (±0.2)


• Includes: U-shape anchor, 6 lag bolts, threaded rebar