Clamp Type Lathe Knurling Tool – 3/8" Sq x 5-3/4" Long – Tail II, 3-25 mm Capacity
Clamp Type Lathe Knurling Tool – 3/8" Sq x 5-3/4" Long – Tail II, 3-25 mm Capacity is backordered and will ship as soon as it is back in stock.
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Description
Description
Clamp Type Lathe Knurling Tool – 3/8" Sq x 5-3/4" Long – Tail II, 3-25 mm Capacity
Size Of Knurling Tool
"3/8" x 3/8" x 5-3/4" (16 x 9.5 x 75 mm)" These are the dimensions of the tool holder shank:
3/8" x 3/8" → Cross-sectional size of the shank (width and height) – fits into the tool post or holder of a lathe.
5-3/4" → Length of the tool holder.
(16 x 9.5 x 75 mm) → Metric approximation: 3/8" ≈ 9.5 mm 5-3/4" ≈ 146 mm (but this seems like a mismatch; possibly a typo — 75 mm ≈ 3")
This reiterates:
3/8" Sq → Square shank (fits tool post).
5-3/4" Long → Length of the entire tool or handle/tail section.
Clamp Capacity
This specification refers to the range of workpiece diameters that the knurling tool is designed to handle effectively.
Minimum Diameter – 3 mm: The tool can knurl small parts, such as thin rods or precision components.
Maximum Diameter – 25 mm: It's also capable of handling larger cylindrical workpieces like shafts or handles, up to 25 mm in diameter.
Tool Design Compatibility: The clamp and wheels of the knurling tool can apply proper pressure on workpieces within this diameter range, ensuring clean, even knurling without slippage or deformation.
Knurl Size Explained-Grip and Pattern
These numbers refer to the physical size of each knurling wheel (the round, patterned cutting tool that rolls against the workpiece):
19 mm → Outer diameter of the knurl wheel
9.5 mm → Width (thickness) of the wheel
6.35 mm (1/4") → Bore diameter (hole size for mounting the wheel on the knurling tool)
Why it matters: The precise dimensions ensure:
Accurate fit on the tool
Stable rotation while knurling
Uniform pressure and pattern transfer to the workpiece.
The pattern spacing (teeth) is medium — not too fine, not too coarse.
Ideal for most general-purpose knurling: Tool handles Knobs Grips Decorative metal parts
Crafted From High Quality Tool Steel
This knurling tool is made from strong, high-grade tool steel. That means it's built to last, even with heavy use. It can handle pressure and wear without bending or breaking, making it reliable for all your knurling tasks.
The tool has a smooth, black epoxy coating that protects it from rust and damage. It also gives the tool a clean, professional look while helping it last longer in tough workshop conditions.

Use of This Knurling Tool
This knurling tool is used on a lathe to create textured patterns—called knurls—on the surface of cylindrical workpieces like metal rods, handles, or knobs.
- Better Grip: The textured surface helps people hold onto tools, knobs, or machine parts without slipping—especially useful in oily or greasy environments.
- Aesthetic Finish: Knurling adds a professional, finished look to parts, often seen on handles, caps, and control knobs.
- Mechanical Fit: Knurling can slightly expand a shaft's diameter for a tighter press-fit into a hole or sleeve.
- Machine shops
- Manufacturing plants
- DIY or hobbyist metalworking
- Automotive or aerospace industries
- Any place where tools or parts need grip or decoration
Precision Clamp-Type Knurling Tool – Durable, Versatile & Rust-Resistant for Smooth, Consistent Results
This clamp-type knurling tool features a durable 3/8" square tool steel shank (5-3/4" long) with a rust-resistant epoxy black finish. It handles workpieces from 3–25 mm in diameter and uses medium-pitch, hardened EN31 knurl wheels (19 x 9.5 x 6.35 mm) for smooth, consistent patterns. Ideal for general-purpose knurling, it offers precision, long-lasting performance, and a professional finish on cylindrical metal parts.
- Versatile Capacity: Handles workpieces from 3–25 mm in diameter for a wide range of knurling applications.
- Durable Build: Made from premium tool steel for strength, stability, and long-lasting performance.
- Precision Knurling: Fitted with 19 x 9.5 x 6.35 mm medium-pitch hardened EN31 knurls for clean, uniform patterns.
- Standard Fit: 3/8" square shank fits most lathe tool posts; 5-3/4" length provides secure grip.
- Protective Finish: Epoxy black coating resists rust and wear, ensuring long-term reliability.




