---
product_id: 104530906
title: "WoodPro Fasteners ST516X4B 5/16-Inch by 4-Inch Length Round Washer Head Exterior Wood Screws, 250-Pack , Gold"
brand: "woodpro"
price: "1238.51 DT"
currency: TND
in_stock: true
reviews_count: 13
category: "Woodpro"
url: https://www.desertcart.tn/products/104530906-woodpro-fasteners-st516x4b-5-16-inch-by-4-inch-length
store_origin: TN
region: Tunisia
---

# T-30 Star Drive for slip-free torque 5/16" x 4" length precision 1,500-hour golden E-Coat corrosion shield WoodPro Fasteners ST516X4B 5/16-Inch by 4-Inch Length Round Washer Head Exterior Wood Screws, 250-Pack , Gold

**Brand:** woodpro
**Price:** 1238.51 DT
**Availability:** ✅ In Stock

## Summary

> 🔩 Screw smarter, build stronger — the golden standard in exterior fasteners!

## Quick Answers

- **What is this?** WoodPro Fasteners ST516X4B 5/16-Inch by 4-Inch Length Round Washer Head Exterior Wood Screws, 250-Pack , Gold by woodpro
- **How much does it cost?** 1238.51 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/104530906-woodpro-fasteners-st516x4b-5-16-inch-by-4-inch-length)

## Best For

- woodpro enthusiasts

## Why This Product

- Trusted woodpro brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Bulk Value Pack:** 250 screws plus a 25mm T-30 Star Bit included — professional-grade quality without the premium price tag.
- • **Slip-Free Drive:** Secure T-30 Star Drive reduces bit cam-out, letting you work faster and with less frustration.
- • **Effortless Precision:** Patented ASTER thread combined with a sharp Type-17 point guarantees quick starts and smooth drilling every time.
- • **Unmatched Durability:** PPG Industries' 1,500-hour golden E-Coat ensures your projects withstand the elements with premium corrosion resistance.
- • **Optimized for Exterior Excellence:** Perfect for post-to-pole framing and insulation panels, these screws deliver superior holding power on rough and treated lumber.

## Overview

WoodPro Fasteners ST516X4B 5/16" x 4" round washer head wood screws come in a 250-pack with a T-30 Star Bit. Featuring a patented ASTER thread and sharp Type-17 point, these screws offer quick starting and effortless drilling. Coated with PPG Industries' industry-leading 1,500-hour golden Electro-Polyseal finish, they provide superior corrosion resistance and chip protection, making them ideal for demanding exterior applications like post-to-pole framing and insulation panels.

## Description

Product Description WoodPro Washer Head Screws are coated by PPG Industries with an industry leading 1,500 hour Electro-Polyseal coating for consistent layering that prevents recess fill while offering superior corrosion protection. The stronger PPG coating helps prevent chipping for added exterior corrosion protection. The secure STAR drive helps reduce bit slippage and a sharp Type-17 point with a patented ASTER thread provides quick starting and effortless drilling. These screws can be used for a wide range of interior and exterior applications. Primary applications include: Post to pole framing, Insulation panels. From the Manufacturer WoodPro Washer Head Screws are coated by PPG Industries with an industry leading 1,500 hour for consistent layering that prevents recess fill while offering superior corrosion protection. The stronger PPG coating helps prevent chipping for added exterior corrosion protection. The secure STAR drive helps reduce bit slippage and a sharp Type-17 point with a patented ASTER thread provides quick starting and effortless drilling. These screws can be used for a wide range of interior and exterior applications. Primary applications include: Post to pole framing, Insulation panels.

Review: Much better deal than timberlok - I am an older contractor. We have gone through numerous 250 count buckets of 4" (and other lengths) timberloks over many years. Locally the typical bucket of timberlok goes for $149.99...these were $56. They compare well in size to the hex head timberlok. My micrometer says the shank on the woodpro is .200", vs, .195" for the timberlok. The threads per inch is almost the same and the diameter on the woodpro threads is .282" vs. .263 on the timberlok. The torx head does well and the head has more surface area than the timberlok, hence they don't pull through as easily. The thread length is optimized for attaching nominal 2x stock. It runs up the shaft about 2-1/2". I just used them on 2x roughcut and they worked fine if you overdrive them a moment to pull the stock together. The temper seems good as does the finish, but time will tell. It's a much nicer screw for a realistic price. I am going to stop wasting money on timberloks.
Review: Excellent product and a great value - Using these to build a pole barn. The coating is consistent from screw to screw. They drive easily with 18v brushless drivers. They have tremendous holding power, enough to will flatten badly cupped SYP 2x lumber. And they are so much faster than thru-drilling and bolting. Great product.

## Features

- 5/16 x 4-Inch length, Includes One 25mm T-30 Star Bit
- T-30 Star Drive, Torx(tm) Compatible
- Patented ASTER thread for quick starting
- Sharp Type-17 Point for easy drilling
- PPG Industries 1,500 Hour Golden E-Coat

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B009A5FH5E |
| Best Sellers Rank | #216,801 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #237 in Lag Screws |
| Brand | Woodpro |
| Color | Gold |
| Customer Reviews | 4.8 out of 5 stars 136 Reviews |
| Drive System | Torx |
| Exterior Finish | Gold Galvanized |
| Fastener Size | 4 inches |
| Fastener Type | Wood Screws |
| Finish Types | PPG Golden 1,500 Hour E-Coat |
| Global Trade Identification Number | 00649853885848 |
| Head Style | Round |
| Head Type | Round |
| Included Components | 5/16 x 4 In. 1500 Hour PPG Golden E-Coat Washer Head Screws |
| Item Diameter | 0.31 inches |
| Item Dimensions | 10 x 5.5 x 5.5 inches |
| Item Weight | 9.9 pounds |
| Item dimensions L x W x H | 10 x 5.5 x 5.5 inches |
| Manufacturer | WoodPro Fasteners |
| Material | Steel |
| Material Type | Steel |
| Metal Type | Alloy Steel |
| Model | ST516X4B |
| Number Of Items | 250 |
| Number of Packs | 1 |
| Number of Pieces | 250 |
| Outside Diameter | 0.31 inches |
| Part Number | ST516X4B |
| Point Style | Type 17 Point |
| Screw Head Style | Round |
| Screw Point Style | Type 17 Point |
| Set Name | WoodPro 5/16 x 4-inch Round Washer Head Wood Screws (250-Pack) with T-30 Star Bit |
| Set Screw Thread Type | ASTER |
| Size Name | 4 inches |
| Thread Coverage | Partially Threaded |
| Thread Size | 5/16" |
| Thread Style | ASTER |
| Thread Type | Un |
| UPC | 649853885848 |
| Unit Count | 250 Count |

## Images

![WoodPro Fasteners ST516X4B 5/16-Inch by 4-Inch Length Round Washer Head Exterior Wood Screws, 250-Pack , Gold - Image 1](https://m.media-amazon.com/images/I/51t19nLl8kL.jpg)
![WoodPro Fasteners ST516X4B 5/16-Inch by 4-Inch Length Round Washer Head Exterior Wood Screws, 250-Pack , Gold - Image 2](https://m.media-amazon.com/images/I/51TJHfx4KzL.jpg)
![WoodPro Fasteners ST516X4B 5/16-Inch by 4-Inch Length Round Washer Head Exterior Wood Screws, 250-Pack , Gold - Image 3](https://m.media-amazon.com/images/I/51d72urrD0L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Much better deal than timberlok
*by A***N on September 3, 2022*

I am an older contractor. We have gone through numerous 250 count buckets of 4" (and other lengths) timberloks over many years. Locally the typical bucket of timberlok goes for $149.99...these were $56. They compare well in size to the hex head timberlok. My micrometer says the shank on the woodpro is .200", vs, .195" for the timberlok. The threads per inch is almost the same and the diameter on the woodpro threads is .282" vs. .263 on the timberlok. The torx head does well and the head has more surface area than the timberlok, hence they don't pull through as easily. The thread length is optimized for attaching nominal 2x stock. It runs up the shaft about 2-1/2". I just used them on 2x roughcut and they worked fine if you overdrive them a moment to pull the stock together. The temper seems good as does the finish, but time will tell. It's a much nicer screw for a realistic price. I am going to stop wasting money on timberloks.

### ⭐⭐⭐⭐⭐ Excellent product and a great value
*by R***N on April 21, 2022*

Using these to build a pole barn. The coating is consistent from screw to screw. They drive easily with 18v brushless drivers. They have tremendous holding power, enough to will flatten badly cupped SYP 2x lumber. And they are so much faster than thru-drilling and bolting. Great product.

### ⭐⭐⭐⭐⭐ Great Lag screws at a bargain price.
*by D***Y on December 17, 2017*

these fasteners are used by me to build Handycap ramps. We use the 3 or 4-inch lag screws in place of 3/8" carriage bolds to hold modules together (joining 2x6 lumber together). Although they are more expensive than carriage bolts, they are faster and easier to install (no hole needed) and they provide excellent strength and weather resistance. These are same quality (as far as I can tell) and much cheaper than national brands found in hardware stores.

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-10-04*