TOMMARS 51-Pc Jumbo Tap & Die Set | 1/4-20 to 1-14 SAE Threading for Internal & External Threads

Overview

The TOMMARS 51-piece jumbo tap and die set is built for dependable threading work on a variety of metals. It is designed to help you create new threads or rethread damaged ones with clean, precise cuts. With a focus on durability and consistent performance, this kit suits shop benches, home workshops, and field repairs alike without promising guarantees, but offering real possibilities for improved control and results.

What makes it stand out

Key features include a comprehensive SAE size range from 1/4-20 to 1-14, supporting both NC and NF thread forms. The set is crafted for efficient cutting of internal and external threads, backed by hardened alloy steel and precision-ground cutting teeth. The rust-resistant satin finish minimizes friction, helping you achieve smoother cuts with less resistance.

• Sizes included: 1/4-20 NC, 1/4-28 NF, 5/16-18 NC, 5/16-24 NF, 3/8-16 NC, 3/8-24 NF, 7/16-14 NC, 7/16-20 NF, 1/2-13 NC, 1/2-20 NF, 9/16-12 NC, 9/16-18 NF, 5/8-11 NC, 5/8-18 NF, 3/4-10 NC, 3/4-16 NF, 7/8-9 NC, 7/8-14 NF, 1-8 NC, 1-14 NF
• All cutting teeth are machined to 60 HRC for consistent threading performance
• Rust-resistant satin finish reduces friction for smoother operation

Durability and construction

Each tap and die is forged from hardened alloy steel with precision-ground and polished surfaces to promote reliable chip removal and long-lasting performance. The kit also includes a practical assortment of tools designed to support complete threading projects.

• T-handle tap wrench and a dedicated tap wrench for versatile control
• Die wrench with a 1-1/2 inch diameter adapter for broader options
• Flat screwdriver, center punch, and spiral flute extractors from 3 mm to 18 mm

Real-world use and outcomes

Whether you’re fabricating new threads on steel or repairing worn threads in aluminum, brass, copper, or stainless steel, this set offers precise tooling designed for reliability. The included components are intended to support efficient cutting and rethreading work, with results that may vary by material and task.

Who this is for

Ideal for hobbyists, machinists, automotive enthusiasts, and maintenance pros who value durable metals, precise tolerances, and a complete toolkit in one package. Consider it a practical option for on-site or shop-threading needs rather than a guaranteed outcome.