21 Degree Framing Nails, 2-1/2 in x 0.120 in - Galvanized Ring Shank
21 Degree Framing Nails, 2-1/2 in x 0.120 in - Galvanized Ring Shank
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Our review finds these 21 degree framing nails are a practical choice for contractors and DIYers who need a reliable, corrosion-resistant collated nail for pressure treated lumber. In this review the nails stand out for their compatibility with most plastic strip framing nail guns and the hard-wearing ring shank that grips treated wood securely. The pack of 1000 provides a sensible supply for framing, decking or subfloor work, and the electric galvanizing helps resist rust on outdoor or high-moisture jobs.
Key Features
- Count and size: A 1000 count package with 2-1/2 in length and 0.120 in diameter gives enough fasteners for multiple framing tasks without frequent reordering.
- Collated for speed: The plastic strip collated 21 degree angle is designed to load easily into most compatible framing nail guns to keep work moving efficiently.
- Ring shank hold: The ring shank profile increases withdrawal resistance, providing stronger long-term holding power in treated lumber and subflooring.
- Electric galvanizing: The galvanized finish improves surface quality and corrosion resistance so nails resist rust and deformation on outdoor or damp projects.
- Material strength: Made from ordinary carbon structural steel, the nails deliver consistent driving performance and durability for common construction uses.
Who It's For
These nails are best for framing contractors, remodelers and serious DIYers working with pressure treated lumber, decking, subfloor or general framed structures where a strong mechanical hold is required. The ring shank profile is particularly useful when long-term withdrawal resistance matters, such as decking or flooring underlayment.
Those who should look elsewhere include users who need stainless steel fasteners for extreme coastal exposure or those using a nail gun with a different collation angle; confirm your tool accepts 21 degree plastic strip nails before buying.
Pros & Cons
Pros
- Good value pack size of 1000 for extended job runs without frequent reloads.
- Ring shank design offers superior grip in pressure treated wood and plywood subfloors.
- Electric galvanizing reduces corrosion risk and improves surface quality for outdoor use.
- Compatible with most 21 degree plastic strip framing nail guns for efficient feeding.
Cons
- Not stainless steel, so for extreme saltwater exposure a different fastener would be preferable.
- Some users report occasional nail damage or jam resistance depending on gun and handling.
Specifications
| Brand | Therwen |
| Count | 1000 nails |
| Length | 2-1/2 in |
| Diameter | 0.120 in |
| Angle / Collation | 21 degree plastic strip |
| Shank type | Ring shank |
| Finish | Electric galvanized |
Our Verdict
These 21 degree framing nails are a solid, cost-effective option for anyone fastening pressure treated lumber or subflooring with a compatible plastic strip framing nailer. The ring shank and galvanized finish combine to deliver dependable holding power and corrosion resistance, making the 1000 count pack good value for medium to large jobs.
Frequently Asked Questions
Will these nails work in my 21 degree plastic strip framing nailer?
They are designed for most 21 degree plastic strip framing nail guns, but confirm your tool accepts 21 degree plastic collated nails before purchasing.
Are these suitable for pressure treated lumber?
Yes, the ring shank and galvanized finish are intended to provide strong holding power and improved corrosion resistance for treated wood.
Are they stainless steel?
No, these are electric galvanized carbon steel nails; for severe coastal exposure choose stainless steel fasteners.
Editor's Take
These 21 degree galvanized ring shank framing nails offer strong withdrawal resistance and good corrosion protection for pressure treated lumber, making the 1000 count pack a cost-effective choice for contractors and serious DIYers.

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