Insize Metric Screw Thread Micrometer 3281-S25

The Insize 3281-S25 metric screw thread micrometer is purpose-built for accurately measuring the pitch diameter of screw threads. Covering a measuring range of 0–25mm, this precision tool includes six interchangeable pairs of measuring tips, making it compatible with a wide range of metric and unified threads with a 60° thread angle.

Designed for precision and ease of use, it features a non-rotating spindle to ensure consistent contact and a ratchet stop for controlled, repeatable measurement force. The micrometer provides 0.01mm graduations, delivering the fine resolution needed for critical measurement applications. Although this model is supplied without a setting standard due to its short range, it is compatible with both 60° and optional 55° setting standards for added versatility.

Specifications :

• Part No: 3281-S25
• Type: Screw thread micrometer
• Measurement Range: 0–25mm
• Graduation: 0.01mm
• Material: Stainless steel
• Data Output: No
• L: 42mm
• b: 26mm
• Standard Included: Supplied without setting standard (0–25mm range); compatible with 60° and optional 55° setting standards
• Included Accessories: 6 pairs of 60° thread measuring tips
• Optional Accessories: 55° setting standards

Key Features :

• Range: 0–25mm
• Graduation: 0.01mm for high-resolution measurements
• Non-rotating spindle for consistent contact and improved accuracy
• Ratchet stop for precise, repeatable measurement force
• Includes 6 pairs of measuring tips for 60° threads:
• 0.4–0.5mm / 64–48 TPI
• 0.6–0.9mm / 44–28 TPI
• 1–1.75mm / 24–14 TPI
• 2–3mm / 13–9 TPI
• 3.5–5mm / 8–5 TPI
• 5.5–7mm / 4.5–3.5 TPI
• Made from durable stainless steel

Ideal for machinists, inspectors, and toolmakers, the Insize 3281-S25 screw thread micrometer delivers precision, durability, and flexibility for reliable thread measurement in workshop or laboratory environments.