DC SWISS　Point tap N320-4 UNF(J)1/4-28

[Features] ●Suitable for aluminum, aluminum alloys, magnesium alloys, etc. ● Compliant with ISO3161 standards except for no roundness at the bottom, making it ideal for the aviation industry.

[Applications] ● For drilling through holes. ●Work material: aluminum alloy, pure copper, thermoplastic.

[Specifications] ● Accuracy: 3B ● Nominal dimension: 1/4 ● Number of threads: 28 ● Screw length (mm): 17 ● Total length (mm): 80 ● Shank diameter (mm): 7 ● Shank square part (mm) : 4.9 ● Pilot hole diameter (mm): 5.55 ● Pitch (mm): 0.907 ● Number of chamfered threads: 4 ● Machined screw: Unified screw

[Specification 2] Non-coating

[Material/Finish] Kosoku steel (HSS-E)

[Set contents/accessories]
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【Note】
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