Yamawa Dry Processing Roll Tap OL-RZ G7 1/4-20UNC P OL-RZ-G7-1/4-20UNC-P 1 piece

Catalog number: OL-RZ-G7-1/4-20UNC-P Features: ●This is a roll tap for through hole machining that enables tapping without lubrication in burred thin steel plates and steel materials with relatively short machining lengths in sizes M6 or smaller. ●Improved runout accuracy and optimal design of the chamfer ensure smooth build-up and stable female thread accuracy even under harsh conditions. ●For blind hole machining, please select the sister product HP+RZ/HP-RZ. Applications: ●For through hole machining. ●Workpiece material: Low carbon steel, medium carbon steel, high carbon steel, alloy steel, stainless steel, aluminum alloy castings. Specifications: ● Precision: G7 ● Precision notation: G grade ● Nominal dimensions: UNC1/4 ● Thread length (mm): 15 ● Total length (mm): 62 ● Shank diameter (mm): 6 ● Square shank section (mm): 4.5 ● Counterbore diameter (mm): 5.80 ● Number of threads: 20 ● Number of engaging threads: 4 ● Machined thread: Unified thread ● Surface treatment: TiCN coating ● Neck length (mm): 26 ● Shank length: 33mm ● Length of square shank section: 7mm Material/Finish: ● High-speed tool steel: Powdered high speed steel (HSS-P)