Machine Tap DIN 376 Form C 35° SP HSSE left hand thread - UNF 1" x 12 LH
You use Machine Tap DIN 376 Form C 35° SP HSSE left hand thread - UNF 1" x 12 LH to generate threads during manufacturing, maintenance, or repair work. Correct results depend on matching the tool to the specified thread designation and keeping the tool aligned to the axis.
UNF means Unified National Fine, an inch based fine thread series used where higher thread engagement is specified. Left hand thread means the tool is intended for threads that tighten opposite to standard right hand threads. DIN 376 indicates the referenced standard family or tool standard named in the product designation. HSSE indicates a cobalt alloyed high speed steel grade, often used when the cut is demanding or heat input is higher.
- Machine 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 UNF 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 UNF 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 Machine Tap DIN 376 Form C 35° SP HSSE left hand thread - UNF 1" x 12 LH
- Product type: Machine Tap
- Standard: DIN 376
- Thread designation: UNF
- Thread direction: Left hand thread
- Tool material or execution: HSSE
- 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 machine taps?
- Use this document for machine tapping basics and selection context: Technical information machine 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.
