Shop All Rescue & Descent Equipment
Isc
4.4 Ton Giant Spring Lock Aluminum Block for Rope up to 3/4"
Mfr # 21862
Zoro # G004965456
product price: $279.99
/ea
Free Shipping & Returns
$279.99
Free Shipping on orders over $50
after you
Free 30-Day Returns
Key Features
- Weight Capacity 8,800 lbs. (31.1 kN)
- Features Colored cheek plates & sheaves to easily identify max rope sizes, safe working-load limits, max breaking strengths & sheave sizes
- Application Arborist rigging jobs
Get 10% Off Your First Order
Real Support From Real People
Contact Our U.S.-Based teams
Free 30-Day Returns
Return Policy
Accepted Payment Options
![paypal](https://www.zoro.com/static/assets/img/base/icons/paypal-81447b0e73.png)
Product Information
- Brand Isc
- MFR # 21862
- Zoro # G004965456
- UPC # 5060508261421
- Country of Origin United Kingdom
- Category Rescue & Descent Equipment
Details
Weight Capacity | 8,800 lbs. (31.1 kN) |
Features | Colored cheek plates & sheaves to easily identify max rope sizes, safe working-load limits, max breaking strengths & sheave sizes |
Application | Arborist rigging jobs |
Description
4-5/8 in. sheave, up to 3/4 in. rope capacity, weighs 7.7 lbs., 4.4 ton working load limit. Green sheave (3/4 in. rope capacity) for easy identification. Spring lock blocks are popular among riggers for their high strength-to-weight ratio and quick-twist rope access. Solid aluminum-alloy cheek plates, bushing, and sheave are supported by stainless-steel axles. For those concerned about aluminum not withstanding the punishment of steel, we have no record of a fracture complaint in 3 years of production. Spring lock blocks have broad cheek plates to protect running lines, and large sheaves to minimize bend in rigging lines (providing 4:1 up to 9:1 ratios).
• Type: Rigging Block
• Features: Colored cheek plates & sheaves to easily identify max rope sizes, safe working-load limits, max breaking strengths & sheave sizes
• Solid aluminum-alloy cheek plates, bushing, and sheave are supported by stainless-steel axles
• 4.4 ton Working Load Limit
• Type: Rigging Block
• Features: Colored cheek plates & sheaves to easily identify max rope sizes, safe working-load limits, max breaking strengths & sheave sizes
• Solid aluminum-alloy cheek plates, bushing, and sheave are supported by stainless-steel axles
• 4.4 ton Working Load Limit
Restrictions
- WARNING: Cancer and Reproductive Harm For more information go to www.P65Warnings.ca.gov
- This item has been restricted from sale in the following states: PR
Ratings & Reviews
3 Reasons You Can Count On Us
Supplies for every job.
10 million items and the exact one you need.
When you need it fast, count on Zoro!
2 million products ship in 1 day.
Stretch your budget further.
Everyday low prices on the brands you love.
Explore More Products
- SHOWA Cut Resistant Coated Gloves, A4 Cut Level, Foam Nitrile, XL, 1 PR (234)
- VIKING 9 Unisex Black (VW49T-9)
- SAFETY TECHNOLOGY INTERNATIONAL Stopper Dome, Strobe Cover, Surface, 4-1/2D (STI-1227)
- KLEIN TOOLS Thermal Dipped Gloves, L (60389)
- ISC RP-255 200 Series Medium Rigging Block (57405)
- ISC RP-251 200 Series Small Rigging Block (57404)
- ISC ISC 108100 D4 Industrial Descender (108100)
- FALLTECH Bosun Chair, With Belt, XL Body Belt (8039XL)
- PEAKWORKS Hardware - Tripod Pulley (V860153)
- FALLTECH Bosun Chair, With Belt, L Body Belt (G8039L)
- KONG USA Descender, Big 8, Aluminum, Red (80506R400KK)
- Isc Rescue & Descent Equipment