Hand Tap Bottoming JIS B-4430 Form C HSS-G - UNC 1" x 8 | VÖLKEL
Hand Tap Bottoming JIS B-4430 Form C HSS-G - UNC 1" x 8
With Hand Tap Bottoming JIS B-4430 Form C HSS-G - UNC 1" x 8 you create a thread interface that must assemble without force. Preparation of the hole or blank and steady alignment are the practical checkpoints for repeatable threads.
UNC designates a Unified coarse inch thread, often found in maintenance of imported machinery and assemblies. HSS-G denotes a ground high speed steel tool, suitable for repeatable threading work with proper lubrication.
- Hand Tap use in repair and small batch work, including service workshops and mechanical engineering.
- Thread production on prepared holes or blanks where alignment is controlled by a holder, guide, or machine spindle.
- Process: manual driving or assisted driving depending on your holder and machine setup
- Use: thread cutting, re tapping, and thread cleaning depending on condition
- Use suitable lubrication and remove chips regularly so cutting edges do not pack up.
- Thread system context: match the tool to the UNC specification stated on the part or drawing.
Note Clean threads and tools before use, apply suitable lubrication for cutting operations, and stop if resistance rises sharply.
- Direct selection by thread designation such as UNC when stated reduces setup mistakes.
- Suitable for workshop processes where alignment and controlled engagement are practical priorities.
- Supports consistent thread quality when you use steady feed and lubrication.
- Works well for maintenance tasks where parts must be reworked to the drawing requirement.
Drawbacks
- Not suitable for materials or hardness outside the typical range for the named tool material and execution.
- Not intended for high performance production without a validated process and rigid machine conditions.
- Prepare the hole or existing thread so entry is clean and burr free.
- Select a suitable holder and ensure the tool is aligned square to the thread axis.
- Apply suitable cutting lubricant and start the cut with steady rotation.
- Maintain even feed without side force so the tool follows the axis.
- Reverse briefly to clear chips from the flutes, then continue with controlled engagement.
- Stop when required depth is reached, then back the tool out completely.
- Clean the thread and tool, then protect the tool from corrosion for storage.
- 1 piece Hand Tap Bottoming JIS B-4430 Form C HSS-G - UNC 1" x 8
- Product type: Hand Tap
- Thread designation: UNC
- Tool material or execution: HSS-G
- How do you decide between a hand tap and a machine tap for this thread?
- You choose by the driving method and the stability of the setup. Hand taps support controlled manual work, while machine taps support guided or powered driving with stable alignment.
- Where can you find detailed technical notes for hand taps?
- Use this reference for handling principles, selection logic, and typical workshop checks: Technical information hand taps as PDF
- What do you check before you start cutting the thread?
- Confirm the thread designation, the hole preparation, and the workpiece material. Keep alignment square to the axis and plan lubrication and chip evacuation.
- How do you translate inch based thread notation to metric workshop references?
- Use this conversion table for fast unit assignment in daily work: Inch to mm conversion table as PDF
- How do you reduce the risk of a tapered or oversize thread?
- Maintain alignment, avoid side load, and use steady feed. Clean chips from the cutting geometry and verify the first part against the specification.
- Where do you find the matching catalog for additional variants and reference data?
- Use the catalog for additional information and product family context: VD 23 catalog as PDF
Do you need help selecting or using the product?
Use the contact form.
