Thread pair for thread measurement, micrometers with measuring face Ø6.35 mm, thread diameter 2.55 mm, metric pitch 4.0-4.5 mm, Whitworth 6 threads per inch, UN/UNC/UNF 6 threads per inch

Description

Thread measuring wire ø6.35 mm is a precision-ground tool steel wire used in the three-wire method to verify the pitch diameter of screw threads. The three-wire method provides more accurate pitch diameter measurements than direct reading with a thread micrometer — three wires of identical diameter (maintained as a matched set in the inspection laboratory) create a measurement geometry that cancels out first-order errors.

Wire diameter ø6.35 mm. Lapped to tight tolerances, hardened, and supplied with documented diameter calibration. Use a matching thread micrometer or universal micrometer for the actual measurement step.

Usage: Select three wires with a diameter matched to the thread pitch (the manufacturer’s table provides the correct wire diameter for a specific thread pitch). Place two wires in adjacent grooves on one side of the thread and one on the opposite side. Measure over the wires with a standard outside micrometer. Apply the three-wire formula: pitch diameter = M − 3w + 0.866p (where M is the over-wire reading, w is the wire diameter, and p is the thread pitch).

Common applications: Thread QC inspection in machine shops performing screw machining, calibration lab thread form verification, line-side QC on thread cutting operations, and all applications where direct thread micrometer readings need to be verified against the more accurate three-wire reference.

Features

• Thread measuring wire ø6.35 mm
• Hardened, ground reference surfaces for repeatable measurement
• Schut build quality
• Suitable for workshop QC, calibration labs, and bench measurement applications
• SWISS MADE series

Specifications

Compatible accessories

Compatible accessories: Schut setting standards and reference standards for periodic verification of accuracy at known dimensions; calibration certificate (ISO 17025) upon initial delivery and for periodic verification — typically a 12-month interval for production floors, 6 months for high-volume lines; Schut protective cases and bench storage; Schut spare parts and consumables where applicable.

Additional information

Specifications

Thread measuring wire ø6.35 mm is a precision-ground tool steel wire used in the three-wire method to verify the pitch diameter of screw threads. The three-wire method provides more accurate pitch diameter measurements than direct reading with a thread micrometer — three wires of identical diameter (maintained as a matched set in the inspection laboratory) create a measurement geometry that cancels out first-order errors.

Wire diameter ø6.35 mm. Lapped to tight tolerances, hardened, and supplied with documented diameter calibration. Use a matching thread micrometer or universal micrometer for the actual measurement step.

Usage: Select three wires with a diameter matched to the thread pitch (the manufacturer’s table provides the correct wire diameter for a specific thread pitch). Place two wires in adjacent grooves on one side of the thread and one on the opposite side. Measure over the wires with a standard outside micrometer. Apply the three-wire formula: pitch diameter = M − 3w + 0.866p (where M is the over-wire reading, w is the wire diameter, and p is the thread pitch).

Common applications: Thread QC inspection in machine shops performing screw machining, calibration lab thread form verification, line-side QC on thread cutting operations, and all applications where direct thread micrometer readings need to be verified against the more accurate three-wire reference.

Features

• Thread measuring wire ø6.35 mm
• Hardened, ground reference surfaces for repeatable measurement
• Schut build quality
• Suitable for workshop QC, calibration labs, and bench measurement applications
• SWISS MADE series

Specifications

Compatible accessories

Compatible accessories: Schut setting standards and reference standards for periodic verification of accuracy at known dimensions; calibration certificate (ISO 17025) upon initial delivery and for periodic verification — typically a 12-month interval for production floors, 6 months for high-volume lines; Schut protective cases and bench storage; Schut spare parts and consumables where applicable.