Buck Algonquin 70STBC888L T-Bolt Clamp | 8.43–9 in. | Long Bolt

Buck Algonquin 70STBC888L — T-Bolt Clamp | 8-27/64 to 9 in. | Long Bolt | 18-8 Stainless Steel

Buck Algonquin 70STBC888L is a heavy-duty marine T-bolt clamp with a long 3.5 in. bolt for large-diameter hose connections. Diameter range 8-27/64 in. (8.43 in.) to 9 in. 18-8 stainless steel nut with nylon insert. Maximum torque 60 lb. Hand tools only — do not use an impact driver or power tool. Sold individually.

Confirm Fitment Before Ordering

Not sure if this clamp fits your hose? Give us your hose outside diameter and application and we’ll confirm it for you before you order — by email, text, or live chat.

Part Specifications

• Buck Algonquin Part Number: 70STBC888L
• Type: T-bolt clamp, long bolt
• Minimum Diameter: 8.43 in. (8-27/64 in.)
• Maximum Diameter: 9.00 in.
• Band Width: 0.75 in.
• Band Thickness: 0.025 in.
• Bolt Length: 3.5 in.
• Nut: 18-8 stainless steel with nylon insert
• Maximum Torque: 60 lb.
• Installation: Hand tools only — do not use impact or power tools
• Sold As: Individually
• Vendor: Buck Algonquin

Additional Information

• Vendor: Buck Algonquin
• Part Number: 70STBC888L
• Application: Large-diameter marine hose connections, 8.43–9 in. outside diameter
• Sold As: Individually

Installation Notes

Install following the hose manufacturer’s guidelines for your application. Torque to a maximum of 60 lb. using hand tools only — do not use an impact driver or power tool. Confirm the clamp diameter range covers your hose outside diameter before installation.

Frequently Asked Questions

Q: What hose diameter does the 70STBC888L fit?
A: The 70STBC888L covers a diameter range of 8.43 in. (8-27/64 in.) to 9.00 in. Measure your hose outside diameter and confirm it falls within this range before ordering. Not sure? Give us your hose size and application and we’ll confirm it — by email, text, or live chat.

Q: Why does this clamp specify hand tools only?
A: T-bolt clamps for marine hose applications require controlled torque to avoid distorting the hose or stripping the nut. Impact drivers and power tools make it easy to exceed the 60 lb. maximum torque, which can damage both the clamp and the hose. Always use a hand ratchet or wrench and stop at 60 lb.

Q: What is the difference between the long bolt (L) and standard bolt versions?
A: The “L” designation indicates a longer 3.5 in. bolt, which provides more thread engagement and clearance for thick-walled hose or installations with limited access. Confirm which bolt length your application requires before ordering.

Q: Is the 18-8 stainless steel nut corrosion resistant for marine use?
A: 18-8 stainless steel (also known as 304 stainless) provides good corrosion resistance in fresh water and general marine environments. For saltwater or below waterline applications requiring higher corrosion resistance, verify whether 316 stainless is required for your installation.

Q: How many clamps do I need?
A: This listing is for one (1) individual clamp. Most hose connections use two clamps per joint — one at each end of the hose. Order the quantity needed for your installation.