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Thread Cutting Screws

  • Brand:

    T,TGR,XDM,OEM as requirement

  • Brief:

    Cross Recessed Pan Head Cutting Tapping Screws,Scrape Point,

  • Surface:

    Polishing; Anodize; Nickel, Zinc, Tin, chrome,Silver plating ,Heat treatment: Point hardening,quenching hardening

  • Material:

    Aluminum, copper, brass, stainless steel, steel, iron, alloy, zinc etc.

  • Size:

    ST1.5-ST6.3 also customized

  • MOQ:

    Feel free to contact us for further inquiry.
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product details

Use a thread cutting screw or a thread forming screw to create a tight fit in heavy gauge sheet metal, aluminum, cast iron and other hard materials. Both are a type of self tapping screw. Thread cutting screws have tapered entering threads and multiple cutting edges to dig into the boss (tapped hole). Thread forming screws are generally used for plastics.

Screw Thread d ST1.5 (ST1.9) ST2.2 (ST2.6) ST2.9 ST3.5 ST4.2
P Pitch 0.5 0.6 0.8 0.9 1.1 1.3 1.4
a max 0.5 0.6 0.8 0.9 1.1 1.3 1.4
dk max 2.8 3.5 3.8 4.5 5.5 7.3 8.4
min 2.6 3.3 3.5 4.2 5.2 6.9 8
k max 0.8 0.9 1.1 1.4 1.7 2.35 2.6
L1 max 0.7 0.9 1.6 1.6 2.1 2.5 2.8
Socket No. 0 0 0 1 1 2 2
M Ref. 1.6 1.7 1.9 2.8 3.2 4.4 4.6
Penetration depth min 0.7 0.8 0.9 1.3 1.7 1.9 2.1
max 0.9 1 1.2 1.6 2.1 2.4 2.6
Screw Thread d ST1.5 (ST1.9) ST2.2 (ST2.6) ST2.9 ST3.5 ST4.2
P Pitch 0.5 0.6 0.8 0.9 1.1 1.3 1.4
a max 0.5 0.6 0.8 0.9 1.1 1.3 1.4
dk max 2.8 3.5 4 4.3 5.6 7 8
min 2.66 3.3 3.7 4.1 5.3 6.64 7.64
k max 0.9 1.1 1.6 2 2.4 2.6 3.1
min 0.8 1 1.4 1.8 2.15 2.35 2.8
L1 max 0.7 0.9 1.6 1.6 2.1 2.5 2.8
Socket No. max 0 0 0 1 1 2 2
M Ref. 1.5 1.7 1.9 2.7 3 3.9 4.4
Penetration depth min 0.5 0.7 0.85 1.1 1.4 1.4 1.95
max 0.7 0.9 1.2 1.5 1.8 1.9 2.35