GRK 12221 5/16x3-1/8 Star Drive Washer Head Climatek Coated Steel RSS Rugged Structural Screws, 200/Box
US$271.28
Arrives as soon as ✓ Free shipping over $200Description
Product Details Color: yellow Item Dimensions: 6.25 x 0.82 x 0.51 inches Item Weight: 2.4 ounces Number of Items: 200 Unit Count: 200 Count Part Number: 12221 Thread Coverage: Partially Thr...
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Free shipping $200+
Orders of $200 or more ship free. No code needed.
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Product Details
- Color: yellow
- Item Dimensions: 6.25 x 0.82 x 0.51 inches
- Item Weight: 2.4 ounces
- Number of Items: 200
- Unit Count: 200 Count
- Part Number: 12221
- Thread Coverage: Partially Threaded
- Fastener Size: 3-1/8 in.
- Size Name: 5/16" x 3-1/8"
- Number of Pieces: 200
- Material Type: Steel
- Exterior Finish: Stainless Steel
- Metal Type: Alloy Steel
- Finish Types: Climatek
- Screw Head Style: Washer Head
- Head Type: Round
- Thread Style: Right Hand
- Drive System: Torx
About this item
- Heavy Duty Lag Screw Alternative: Eliminates pre-drilling in most woods with Zip-Tip technology. Installs 3x faster than traditional lag screws
- ESR-2442 Code Approved For Structural Applications: Engineered for professional-grade connections in heavy duty framing, multi-ply beams, and timber framing. Integrated washer head delivers maximum clamping force for zero-gap joints in LVL, LSL, and engineered lumber.
- Advanced Corrosion Protection: Rust resistant Climatek coating provides exceptional durability for outdoor use and in pressure-treated lumber applications
- W-cut Thread Design: Reduces installation torque by 40% for smoother, faster driving. CEE threads minimize splitting in dense hardwoods, engineered lumber, and laminated beams.
- Precision Engineering: Star/Torx drive recess with 6 points of contact prevents stripping and minimizes wobble between screws and bits.
Shipping Policy
Flintby ships from the United States.
Most orders leave the warehouse within 1 business day and arrive in 2–7 business days.
- Free shipping on orders of $200 or more, applied automatically
- Otherwise shipping is a flat $6.90
- Your tracking number is emailed as soon as your order ships
- We currently ship to the lower 48 United States
Return policy
30-day returns.
If it's not quite right, you can request a return within 30 days of delivery, and Flintby will email you return instructions. Change-of-mind returns must be unused, unassembled, and in their original packaging. There is no restocking fee. Depending on the item's packaged size and weight and how it needs to be collected, a change-of-mind return may have a return shipping or pickup cost. We only deduct the actual cost: we tell you the exact amount and get your OK before arranging a paid return, and if there is no cost, nothing is deducted. Returns for damaged, defective, or incorrect items are free.
How it works
- Email us at support@flintby.com with your order number.
- We send your return instructions within 1 business day, along with any return shipping cost so you can decide.
- Your refund goes back to your original payment method within 10 business days of the carrier scan.
Damaged or defective on arrival? Send a photo and Flintby replaces or refunds immediately, return shipping on us, and in most cases you won't need to send anything back.