Product Name: Threading Die (1/4-20 UNF) – Part No. 05108899

Description:
This component is a replacement threading die, specifically a 1/4-20 UNF round threading die, designed for use with the 1/4 inch hand threading tool assembly in high-pressure waterjet systems . According to the official parts diagram for High Pressure Threading Tools (Table 12-37), this die is a standard component for cutting threads onto 1/4 inch high-pressure stainless steel tubing ends.

The threading die functions as the precision cutting component within the hand threading tool assembly (P/N 05108865). Its primary purpose is to cut the required UNF (Unified Fine) threads onto tubing ends that have already been properly coned with a coning tool. The "1/4-20" designation indicates a 1/4 inch nominal diameter with 20 threads per inch, which is the standard thread specification for 1/4 inch high-pressure waterjet connections. The die is manufactured from high-speed steel or hardened tool steel, designed to withstand the demands of cutting into work-hardened stainless steel tubing.

Applications:

• Cutting 1/4-20 UNF threads on 1/4 inch high-pressure tubing ends for waterjet systems

• Used as a replacement cutting element for the Hand Threading Tool Assembly (.25, P/N 05108865)

• Essential for fabricating custom-length high-pressure lines and maintaining the fluid system of a waterjet cutting machine

• Suitable for preparing tubing for systems operating at pressures up to 60,000 psi (4,137 bar)

• Compatible with standard waterjet systems from KMT, AccuStream, Flow, OMAX, BFT, WSI, and others

Features:

• Precision Ground Threads: Manufactured to exacting tolerances to produce clean, accurate threads for reliable, leak-free connections

• 1/4-20 UNF Thread Specification: Standard thread size for 1/4 inch high-pressure waterjet connections

• High-Speed Steel Construction: Made from durable HSS or hardened tool steel to withstand repeated use on work-hardened stainless steel tubing

• Replaceable Wear Component: The die is a consumable part of the threading tool set and is designed to be replaced when it becomes dull to maintain cutting accuracy

• Standard Round Die Configuration: Features typical round die design with multiple cutting edges and chip relief holes

Maintenance:

Usage Guidelines:

• Use as a Matched Set: For best results, always use the die as part of the complete, matched hand threading tool assembly (P/N 05108865) with the appropriate tube vise (P/N 05108782) and retainer (P/N 05108741)

• Sequence (Critical): Tubing must be coned with a coning tool prior to threading. Threading cannot be performed on unconed tubing ends

• Use Cutting Oil (Critical): Always apply a liberal amount of medium-weight cutting oil with high sulfur content to the tube and the threading die during the threading process. This lubricates the cutting action, prevents galling (seizing) of the stainless steel, and significantly extends the life of the die

• Proper Extension Length: For 1/4" tubing, the recommended extension length beyond the tube vise is 1.25-1.50 inches (31.8-38.1 mm)

• Proper Technique: Grip the handles firmly, apply steady pressure, and turn the tool counter-clockwise. Approximately every half turn, reverse direction to break off and remove chips

• Maximum Thread Length: For 1/4" HP tubing, the maximum thread length is 0.56 inches (14.2 mm)

Inspection & Care:

• Inspect for Wear: Regularly inspect the cutting edges of the die. If the die requires excessive force to cut, produces rough threads, or fails to cut clean threads, it is likely dull and must be replaced immediately

• Clean After Use: After each use, thoroughly clean the die of metal shavings, cutting oil, and debris to prevent rust and maintain precision. Use compressed air or a small brush to remove chips from the die teeth

• Check for Damage: Inspect the die for chipped or broken teeth before each use; a damaged die will not produce proper threads and must be replaced

• Storage: Store the complete tool set in a clean, dry, protective case to prevent damage to the precision die

• Replace, Do Not Sharpen: When the die becomes dull, it should be replaced with a new OEM die. Attempting to sharpen the die can alter its critical geometry, leading to improper thread profiles and potential high-pressure leaks

• Proper Die Orientation: When installing a new die, ensure that the lettering on the die faces down toward the guide bushing to ensure proper orientation of the leading thread

• Full Depressurization (Critical): This tool is for preparing new or replacement tubing offline. Never use it on a pressurized system. Always follow lockout/tagout procedures and ensure the waterjet system is fully depressurized before any maintenance

• Anti-Seie Application: When assembling high-pressure connections, apply high-pressure anti-seize lubricant to threads to prevent galling and ensure proper torque

Cross-Reference Information:

• OEM Part Number: 05108899

• Table Reference: Table 12-37, High Pressure Threading Tools

• Thread Specification: 1/4-20 UNF

• Associated Components: Hand Threading Tool Assembly (05108865), Tube Vise (05108782), Retainer (05108741)

• Recommended Extension Length: 1.25-1.50 inches (31.8-38.1 mm)

• Maximum Thread Length (L): 0.56 inches (14.2 mm)

• Recommended Cutting Oil: Medium-weight cutting oil with high sulfur content