DC SWISS　Spiral Tap SA350-3 UNF(J)1/4-28

[Features] ● Tap tool manufactured for nickel alloys. ● Compliant with ISO3161 standards except for no roundness at the bottom, making it ideal for the aviation industry.

[Use] ● For drilling blind holes. ●Work material: Nickel alloy. (>850≤1600 N/m[[M2]])

[Specifications] ● Accuracy: 3B ● Nominal dimension: 1/4 ● Number of threads: 28 ● Screw length (mm): 15 ● Overall length (mm): 80 ● Shank diameter (mm): 7 ● Shank square part (mm) : 5.5 ● Pilot hole diameter (mm): 5.55 ● Pitch (mm): 0.907 ● Number of chamfered threads: 2.5 ● Machined screw: Unified screw

[Specification 2] Non-coating

[Material/Finish] Powdered high-speed steel (HSS-E-PM)

[Set contents/accessories]
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【Note】
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