IMSCREWS 1/4"-20 x 4-1/2" 304 Stainless Steel Carriage Bolts (20 PCS)

Reliable Fastening for Extended Timber Connections
The IMSCREWS 1/4" x 4-1/2" carriage bolt is designed for projects requiring deep penetration and stable support. With a 1/4-inch diameter and 4.5-inch length, these bolts are well-suited for through-bolting standard 4x4 posts or joining multiple layers of dimensional lumber. Built for versatility, they offer the stability necessary for long-term use in fences, garden gates, and furniture assembly.

High Durability and Safety-Focused Design
Forged from 18-8 (304) stainless steel, these fasteners are highly resistant to corrosion in outdoor environments. The smooth round head offers a clean appearance that reduces snagging hazards, making them an ideal choice for railings, play sets, and benches. The integrated square neck prevents the bolt from spinning, allowing for easy, one-sided installation with a single wrench.

Specifications:
- Thread: 1/4"-20 Coarse; Length: 4-1/2" (Under Head)
- Material: 304 (18-8) Stainless Steel; Full Thread

FAQ:
Q: Drill bit size? A: A 1/4" bit provides a snug fit.
Q: Salt air safe? A: Yes, 304 SS is highly resistant to coastal corrosion.

Pro-Tips:
1. Ensure the pilot hole is perpendicular for 4.5" bolts to avoid alignment issues.
2. Pair with a flat washer on the nut side to protect wood fibers.

Key Features

• MARINE GRADE 304 STAINLESS STEEL Crafted from high-quality 18-8 (304) stainless steel, these carriage bolts offer exceptional resistance to rust and oxidation. Well-suited for long-term outdoor use, they ensure your wooden structures remain clean without unsightly rust stains.
• EXTRA LONG FULL THREAD DESIGN The 4.5-inch length combined with a full thread design offers maximum versatility. It allows for secure fastening across various material thicknesses, ensuring the nut can be tightened even on thinner boards or composite panels.
• SELF-LOCKING SQUARE NECK Features a smooth rounded mushroom head and a precision square neck that bites into pre-drilled holes. This self-locking mechanism prevents the bolt from spinning while tightening the nut, allowing for easy one-sided installation.
• IDEAL FOR MEDIUM DIY PROJECTS With a 20-piece bulk pack, these 1/4 diameter bolts are Well-suited for assembling outdoor garden furniture, repairing wooden fences, building gazebos, or maintaining playground equipment where long-reach fastening is required.
• NOTE ON QUANTITY & INSTALLATION Package includes 20 pieces of 1/4-20 x 4-1/2 carriage bolts only. Nuts and washers are NOT included. We recommend pre-drilling a 1/4 hole and using manual tools for installation to prevent thread galling.

Specifications

• ASIN: B0F2F6RTLW
• Internal SKU: IMS0767
• Size: 1/4"-20 x 4-1/2"
• Material: Stainless Steel
• Finish: Stainless Steel
• Head Style: Round
• Package Quantity: 20