Short Machine Tap Bohrcraft 4136, HSS-G, NPT, Form C

Short Machine Tap Bohrcraft 4136, HSS-G, NPT, Form C addresses the need for precise threading of American standard NPT pipe threads, beginning with a focus on technical accuracy and compatibility. Designed with a 1:16 taper, this tap is suitable for use with sealing materials and supports both manual and machine operations. Its short construction is advantageous in restricted spaces, allowing for efficient handling and consistent thread formation in both through and blind holes.

The tap’s HSS-G steel composition and Form C geometry contribute to stable performance across a range of technical applications. Multiple NPT sizes are available, supporting a broad spectrum of industrial threading tasks. Each variant is specified for dimensional accuracy, ensuring compatibility with standard NPT requirements.

In practical terms, the Bohrcraft 4136 tap is used for threading operations where sealing is required, such as in piping systems and technical assemblies. The 2–3 thread chamfer design ensures reliable results for both through and blind holes, minimizing the risk of incomplete threads. This makes the tap suitable for various installation and maintenance scenarios in industrial settings.

Bohrcraft 4136 Short Machine Tap, HSS-G, NPT, Form C

Technical Construction and Features

The tap is constructed from HSS-G steel and features a Form C design, supporting both hand and machine use. Its short length is optimized for operations in limited spaces, while the 1:16 taper ensures compatibility with American NPT standards. The tap is engineered to handle threads requiring sealing material and is suitable for both through and blind holes.

• Material: HSS-G steel
• Thread standard: NPT, taper 1:16
• Form: C
• Application: manual and machine use
• Chamfer: 2–3 threads for through and blind holes
• Short design for confined spaces

Each variant is dimensioned for specific NPT sizes, ensuring accurate thread profiles and reliable sealing performance. The technical construction supports repeatable results in industrial threading operations.

Dimensional Variants

The Machine tap Bohrcraft 4136 is available in a range of NPT sizes from 1/16" to 2". Each size is defined by precise measurements for diameter, length, and chamfer, supporting a wide range of threading requirements in pipework and technical assemblies.

• NPT 1/16" x 27: d1 = 6.25 mm, L1 = 54 mm, d2 = 7.9 mm, L2 = 17.5 mm
• NPT 1/8" x 27: d1 = 8.50 mm, L1 = 59 mm, d2 = 9.6 mm, L2 = 19.0 mm
• NPT 1/8" x 18: d1 = 11.10 mm, L1 = 70 mm, d2 = 12.0 mm, L2 = 22.0 mm
• NPT 1/4" x 18: d1 = 14.70 mm, L1 = 80 mm, d2 = 12.0 mm, L2 = 27.0 mm
• NPT 3/8" x 18: d1 = 18.00 mm, L1 = 82 mm, d2 = 14.5 mm, L2 = 27.0 mm
• NPT 1/2" x 14: d1 = 23.25 mm, L1 = 96 mm, d2 = 18.0 mm, L2 = 35.0 mm
• NPT 3/4" x 14: d1 = 29.25 mm, L1 = 96 mm, d2 = 26.6 mm, L2 = 44.5 mm
• NPT 1.1/4" x 11.5: d1 = 38.00 mm, L1 = 102 mm, d2 = 33.3 mm, L2 = 44.5 mm
• NPT 1.1/2" x 11.5: d1 = 44.25 mm, L1 = 108 mm, d2 = 36.0 mm, L2 = 44.5 mm
• NPT 2" x 11.5: d1 = 56.25 mm, L1 = 114 mm, d2 = 47.6 mm, L2 = 44.5 mm

These variants allow users to select the appropriate tap for their specific technical requirements, ensuring compatibility with a range of NPT pipe sizes and threading needs.

Common Applications

Common applications for the Bohrcraft 4136 Short Machine Tap, HSS-G, NPT, Form C include threading operations in piping installations, industrial maintenance, mechanical assembly, and technical manufacturing. The tap is used where American NPT threads are required, particularly in systems that demand reliable sealing and precise thread geometry.

Catalog Technical Content

Catalog excerpt: For cutting American standard pipe thread, taper 1:16. Suitable for threads with sealing material. For manual and machine use. 2–3 threads lead for through and blind holes. Available in multiple NPT sizes with detailed dimensional specifications as listed above.