Type

Countersunk Screw

Designation

ST4.8 × 1.8 – 35

Head

Countersunk · Ø9.5 × 2.7 mm · 82° included

Countersink

82° included cone (ISO 10642) — head height 2.7 mm follows from head Ø and angle

Drive

PH3 cross-recess

Recess depth

1.22 mm · auto · gauge limits t 0.95–1.49 mm · ISO 4757

Thread

24.00/35 mm · P1.8 · ST sheet-metal (ISO 1478) · plain shoulder 2.2 mm

Major Ø (as built)

4.60 mm

Point

Drill Point (JT) · 8.83 mm

Drill section

Ø3.84 × 7.7 mm · 118°

Drill point rating

Point #3 · capacity ≤ 3 mm steel · stack 2 mm

Service class

C3 · Outdoor urban · coating under-rated — use dip-spin ceramic coating

Est. install torque

≈ 3.4 N·m (indicative — verify by test)

Est. pull-out

≈ 3.1 kN from 2 mm steel sheet (indicative)

Manufacturing mode

FDM 3D print · +0.2 mm thread offset

Notes

ITB-KOT-2020/1057 · Carbon steel · Countersunk ribbed head.