---
product_id: 61385731
title: "Sumner Manufacturing 784000 ST-304 Manual Flange Spreader, 6-3/8\" Spread, 1\" Pin Diameter"
brand: "sumner"
price: "€ 5.11"
currency: EUR
in_stock: true
url: https://www.desertcart.hr/products/61385731-sumner-manufacturing-784000-st-304-manual-flange-spreader-6-3
store_origin: HR
region: Croatia
---

# 1" hardened wedge pin diameter 150-1,500 lb flange capacity 1-3/8" wrench & 1/2" bar drive rotation Sumner Manufacturing 784000 ST-304 Manual Flange Spreader, 6-3/8" Spread, 1" Pin Diameter

**Brand:** sumner
**Price:** € 5.11
**Availability:** ✅ In Stock

## Summary

> 🛠️ Spread the power, not the hassle!

## Quick Answers

- **What is this?** Sumner Manufacturing 784000 ST-304 Manual Flange Spreader, 6-3/8" Spread, 1" Pin Diameter by sumner
- **How much does it cost?** € 5.11 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/61385731-sumner-manufacturing-784000-st-304-manual-flange-spreader-6-3)

## Best For

- sumner enthusiasts

## Why This Product

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

## Key Features

- • **Compact Yet Mighty:** Streamlined design packs serious strength into a portable 6.53 kg frame—perfect for on-the-go pros.
- • **Heavy-Duty Flange Power:** Handles flanges from 150 to 1,500 lbs with ease, built for the toughest industrial demands.
- • **Precision Hardened Wedge:** 1" pin diameter wedge crafted from hardened steel ensures safe, reliable flange splitting every time.
- • **Versatile Drive Mechanism:** Rotatable drive compatible with both 1-3/8" wrench and 1/2" bar for maximum operational flexibility.
- • **Trusted Industrial Standard:** Sumner’s ST-304 model is engineered for durability and precision, making it a must-have in any professional toolkit.

## Overview

The Sumner Manufacturing 784000 ST-304 Manual Flange Spreader is a compact, steel-built tool designed to safely and efficiently separate flanges weighing between 150 and 1,500 lbs. Featuring a hardened 1" wedge pin and a versatile drive system operable by a 1-3/8" wrench or 1/2" bar, this 6.53 kg powerhouse combines durability with portability, making it an essential asset for professional flange maintenance and industrial applications.

## Description

Sumner's four models of manual flange spreaders cover flange ranges from 1" (25 mm) to 24" (600 mm).

## Features

- Can be used for 150 to 1,500 lb flanges
- Hardened wedge for safe splitting
- Large feed screw
- Drive can be rotated by 1-3/8" wrench or 1/2" (12 mm) bar
- Compact design strong enough for tough jobs

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Sumner |
| Part number | 784000 |
| Item Weight | 6.53 kg |
| Product Dimensions | 2.54 x 2.54 x 2.54 cm; 6.53 kg |
| Item model number | ST-304 |
| Size | 1 Inches |
| Style | Wedges |
| Material | Steel |
| Item Package Quantity | 1 |
| Included components | Unit^Instruction Guide |
| Batteries Required? | No |

## Images

![Sumner Manufacturing 784000 ST-304 Manual Flange Spreader, 6-3/8" Spread, 1" Pin Diameter - Image 1](https://m.media-amazon.com/images/I/51jFCQzssxL.jpg)
![Sumner Manufacturing 784000 ST-304 Manual Flange Spreader, 6-3/8" Spread, 1" Pin Diameter - Image 2](https://m.media-amazon.com/images/I/612Tv0LTVYL.jpg)

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**Shop now:** [https://www.desertcart.hr/products/61385731-sumner-manufacturing-784000-st-304-manual-flange-spreader-6-3](https://www.desertcart.hr/products/61385731-sumner-manufacturing-784000-st-304-manual-flange-spreader-6-3)

---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-05-20*