YC609 Round Dot Steel Stamps
YC609 round-dot steel stamps form each character from round dots instead of a sharp edge, reducing stress concentration and crack initiation while staying clearly legible. Ideal for low-stress marking in aerospace, nuclear and oil & gas work. Available as a YC609-L letter set and a YC609-N number set.
Suitable materials: For low-stress marking of thin, spring and fatigue-sensitive parts — widely used in aerospace and precision components.
Core Features
Made of CR-V (6150) chrome-vanadium steel.
The character head reaches HRC 58–62 for lasting, clear marks; the striking end is tempered to HRC 38–46 to absorb impact and prevent cracking.
Round dots spread the striking load — no sharp edges to start cracks in thin or fatigue-sensitive parts, and characters stay clearly legible. Need a deeper, higher-contrast mark on harder or surface-treated parts? Choose YC609B Sharp Dot.
A double-bevel design makes visual alignment and precise striking easy.
Font and size are marked on the side of the stamp for fast identification during work.
The surface is sandblasted for a better anti-slip grip and greater durability.
Exclusive Patent · Multi-Function Storage Box
More than storage — a core accessory that boosts working efficiency and safety:
Patented in Taiwan, USA, France, Germany, China, Vietnam and more — an original design.
Strike with the stamp held in the box — your hands stay clear of the hammer for a safer, steadier hit.
The box keeps the tool perfectly flush with the workpiece — a straight strike and consistent depth, every time.
A built-in viewing window makes positioning easy and keeps impressions from skewing.
Rotate the box freely to suit the way you work.
Patented PP box with a three-hole lid for fast, safe daily access.
Dimensions (character height C)
YC609-L Letter set (27 pcs, incl. &)
| Item No. | Character face C | Shank · square A | Shank length ±0.4 B |
|---|---|---|---|
| YC609-3L | 3.0mm (1/8") | 9.52mm | 69mm |
| YC609-4L | 4.0mm (5/32") | 9.52mm | 69mm |
| YC609-5L | 5.0mm (3/16") | 11.11mm | 70mm |
| YC609-6L | 6.0mm (1/4") | 12.70mm | 76mm |
| YC609-8L | 8.0mm (5/16") | 12.70mm | 74mm |
| YC609-10L | 10.0mm (3/8") | 15.85mm | 85mm |
| YC609-12L | 12.0mm (1/2") | 15.85mm | 101mm |
YC609-N Number set (9 pcs, 0–8)
| Item No. | Character face C | Shank · square A | Shank length ±0.4 B |
|---|---|---|---|
| YC609-3N | 3.0mm (1/8") | 9.52mm | 69mm |
| YC609-4N | 4.0mm (5/32") | 9.52mm | 69mm |
| YC609-5N | 5.0mm (3/16") | 11.11mm | 70mm |
| YC609-6N | 6.0mm (1/4") | 12.70mm | 76mm |
| YC609-8N | 8.0mm (5/16") | 12.70mm | 74mm |
| YC609-10N | 10.0mm (3/8") | 15.85mm | 85mm |
| YC609-12N | 12.0mm (1/2") | 15.85mm | 101mm |
＊12mm comes in blow-molded (BMC) packaging.
→ For material, hardness, usage and other common questions, see the Steel Stamp FAQ