Niigata Seiki BTK-400 Carbide Block Gauge (4mm; Grade K)

Standard (mm): 4

Cross-sectional dimensions (mm): 30 {0-(-0.3)} x9 {(-0.05)-(-0.2)}

Coefficient of thermal expansion: 4.5x10^-6/ K

Dimensional tolerance (µm): ±0.2 (difference width 0.05)

Material: Cemented carbide

Body mass (g): 16

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