[5-21] 大扁頭

43 items。🔍 Filter in the interactive catalog

About this category

Truss head (large flat head) cross-recess screws, with a head noticeably wider than a pan head and a much larger bearing area. Used on thin sheet, plastic, soft materials and oversized holes, where the wide head covers the hole edge and spreads the load instead of dimpling or pulling through. 304 stainless, mostly small 2-3 mm threads.

Standards JIS B 1111

How to choose

• You choose this head for its diameter - check the head covers the hole, not just the thread size.
• A flat head means a shallow recess and a low torque limit; turn power drivers down.
• For a flush finish use countersunk screws; this head is meant to sit proud and bear on the surface.

Specifications at a glance

This category lists 43 items. Material and type coverage below — all stocked in Taiwan.