HEBEI JINZUO FASTENERS CO., LTD

HANDAN, CHINA / ENGLISH

Flat Head Self Tapping Screw with Under-Head Serrations

Flat Head Self Tapping Screw with Under-Head Serrations
Product photograph from the JZ catalogue

A pointed self-tapping screw with a flat head and under-head serrations.

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Use and selection

This is the pointed self-tapping type with a flat head and under-head serrations. The receiving material and hole preparation are central enquiry inputs: state whether holes already exist and provide their dimensions where specified. Keep the required thread and head geometry on the drawing so the pointed type is not confused with a similar-looking drill-point screw.

Catalogue size reference

Nominal diameter Length range / mm
M4.2 13-75
M4.8 13-125
M5.5 13-150
M6.3 13-230

Length ranges are shown in millimetres. Confirm the exact dimensions, finish and availability when enquiring.

Compare the configuration

Flat Head Self Drilling Screw with Under-Head Serrations identifies a self-drilling point instead. Choose the point type to match the receiving material and the specified hole preparation. M6 Needle Point Screw is a separate needle-point framing reference with an expressly pre-punched-hole context.

For your enquiry

  1. What receiving material and hole preparation are specified?
  2. What thread form, head seating and serration geometry are required?
  3. What exact diameter, length, drive and finish should be quoted?

Product information

Attributes Value
Design

Flat head, Under-head serrations, Pointed tip; explicitly self tapping

Catalogue finish

Dacromet coating; confirm the required finish with your enquiry

Describe the configuration

Head, drive, point and thread reference illustrations.