OTC Universal Outside Thread Chaser — 1-1/4" to 5" Capacity, 6 Replaceable Heads, Portable

When a bolt, faucet, steering stem or container loses tidy threads, rethreading by hand or sending parts out for cutting can cost time and money. The OTC 7402 kit combines a rugged aluminum and steel body with six interchangeable die heads to recreate multiple common thread pitches on a wide range of external surfaces. It’s built to be serviced in the field—replaceable cutting heads and a v-pad extend service life and keep the tool performing week after week.

How does the OTC 7402 restore damaged external threads?

The tool uses indexed die heads that engage a damaged thread profile and reform the crest and flank geometry as the body is turned around the workpiece. Instead of removing metal like a lathe, the chaser reforms and cleans existing threads for fast repair.

• Six die heads cover many common pitches and are reversible or replaceable.
• Tool accommodates 1-1/4" to 5" outside diameter parts without special adapters.
• V-pad support and solid construction maintain alignment and reduce chatter.

Which thread sizes and pitches are included with this kit?

The 7402 kit contains multiple thread options across its six heads, covering a broad selection of coarse and fine Imperial pitches used in automotive, plumbing and industrial parts. This range reduces the need for multiple single-size tools.

• Included pitches: 4, 5, 6, 7, 7-1/2, 8, 9, 10, 11, 11-1/2, 12, 14, 16, 18, 20, and 24 TPI.
• Heads are designed for quick on-site swapping and long life under shop conditions.
• Multiple sizes per head let one kit address many repair scenarios.

What range of parts and applications will this chaser handle?

The OTC 7402 was engineered to work on a wide variety of cylindrical components found in garages, machine shops and field service work. Its capacity and construction make it suitable for repeated shop use.

• Common uses: faucet stems, threaded containers, fork tubes, steering stems and exposed bolts.
• Capacity: external diameters from 1-1/4" up to 5" OD without additional tooling.
• Durable materials—steel cutting elements and aluminum body—stand up to frequent use.

How is the 7402 maintained and serviced?

Maintenance focuses on keeping cutting heads sharp and the v-pad clean so the chaser maintains alignment. Heads are replaceable, and routine cleaning after use preserves cutting geometry and tool life.

• Replaceable cutting heads simplify repairs and extend kit longevity.
• Wipe chips and debris from the v-pad and heads after each use.
• Inspect heads for wear and swap in new ones as needed rather than replacing the whole tool.

Who is this for: The OTC 7402 Universal Outside Thread Chaser is aimed at professional technicians, maintenance crews and serious DIYers who need a fast, cost-effective way to restore external threads across a wide diameter range. If you routinely repair vehicles, plumbing fixtures or industrial hardware and prefer a single portable kit over multiple single-size tools, this chaser offers a versatile, serviceable solution that reduces downtime and shop costs.