Project Description
Slotted Flat Head Self Tapping Screws
Slotted flat head self tapping screws (sheet metal screws) are used to applications where finished surfaces require a flush fastening unit.S-metal supply flat head tapping screws with 90° and 80°to 82° head angle types, which offer good centering possibilities; normally slotted flat screw need slot driver to assemble.
Standards:ISO 1482/DIN 7972 ASME B 18.6.3
Material:
*Carbon steel C1018-1022, alloy steel,harden.
*Stainless steel SUS201 SUS304(18-8),SUS316 and SUS410 etc .
Surface treatment:
*Zinc Galvanized/H.D.G/Dacromet etc.
*Plain with passivation for SS materail.
Surface hardness:
The minimum surface hardness after heat treament shall be 450HV
Core hardness:
The core hardness shall be 270HV-370HV.
Application:
Apply to 0.015″ to 0.05″ thickness sheet metal fastening to metal,wood, plastic,fiberglass etc. material.
Notes: For inch size data of slotted flat head tapping screw, please contact us by send email to sales@s-metals.com.
DIN7972Slotted flat head self tapping screw
Dimension in mm.
| thread d | P | dk | k | n | t | |||
| max | min | max | min | max | min | |||
| ST2.2 | 0.8 | 4.3 | 4 | 1l.3 | 0.8 | 0.66 | 0.6 | 0.4 |
| ST2.9 | 1.1 | 5.5 | 5.2 | 1.7 | 1 | 0.86 | 0.75 | 0.5 |
| ST3.5 | 1.3 | 6.8 | 6.44 | 2.1 | 1.2 | 1.06 | 0.95 | 0.6 |
| ST3.9 | 1.3 | 7.5 | 7.14 | 2.3 | 1.2 | 1.06 | 1.05 | 0.7 |
| ST4.2 | 1.4 | 8.1 | 7.74 | 2.5 | 1.51 | 1.26 | 1.15 | 0.75 |
| ST4.8 | 1.6 | 9.5 | 9.14 | 3 | 1.51 | 1.26 | 1.35 | 0.85 |
| ST5.5 | 1.8 | 10.8 | 10.37 | 3.4 | 1.91 | 1.66 | 1.5 | 1 |
| ST6.3 | 1.8 | 12.4 | 11.97 | 3.8 | 1.91 | 1.66 | 1.75 | 1.2 |
