PRODUCT DATA SHEET · Cross Recessed Machine Screw
Cross Recessed Machine Screw — Truss Head
A2 (STS304Cu) · Pickled
Cross Recessed Machine Screw
Custom SpecificationAvailable
Length AdjustmentAvailable
MOQ applies · Enquire
Representative item: STMASB040-0120
| Manufacturing Basis | JK Standard (ref. KS B 1023) |
|---|---|
| Head Type | Truss Head |
| Drive Type | Cross Recessed (Phillips) |
| Recess No. | No.1 (M3) / No.2 (M4·M5) / No.3 (M6·M8) |
| Material | A2 (STS304Cu) |
| Property Class | A2-50 |
| Finish | Pickled |
| Size Range | M3 ~ M8 |
| Items Listed | 61 |
Mechanical Properties (KS B 0233 · ISO 3506-1)
| Min. Tensile Strength | 500 min. N/mm² |
|---|---|
| 0.2% Proof Stress | 210 min. N/mm² |
| Notes | Soft (not work hardened) austenitic |
3D and 2D data based on actual production parts for every item. In-house inspection per lot; test certificates (material, product inspection, tensile, hardness, etc.) available.
Standard Industrial Stock Item — JK Standard refers to the in-house manufacturing standard of Jungkum Fastener Industrial Co., Ltd. This item is produced and controlled under that standard, which references the relevant public standards. Applications requiring full KS-standard compliance (e.g. defense, nuclear power) are handled on a dedicated production line — please contact us.
Dimensions Unit: mm — from production drawings
| Nominal Diameter | Pitch | Head Dia. D | Head Height H |
|---|---|---|---|
| M3 | 0.5 | 6.9 | 1.8 |
| M4 | 0.7 | 9.4 | 2.5 |
| M5 | 0.8 | 11.8 | 3.1 |
| M6 | 1 | 14 | 3.7 |
| M8 | 1.25 | 17.8 | 4.8 |
※ Representative dimensions; tolerances are per the drawing. Detailed tolerances are provided with a quotation or drawing request.
Size Matrix Nominal diameter × length (mm) — click a cell to open that item
| Dia. ＼ Length | 4 | 5 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 25 | 30 | 35 | 40 | 45 | 50 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| M3 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||||||||
| M4 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||
| M5 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ||
| M6 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● | |||||
| M8 | ● | ● | ● | ● | ● | ● | ● | ● | ● | ● |
※ Values in this document are for reference only and are not guaranteed. Verification under actual service conditions is recommended.
※ This series is manufactured and controlled under our in-house standards, which reference the relevant public standards. Applications requiring full KS-standard compliance (e.g. defense, nuclear power) are handled on a dedicated line.
※ Sizes not listed can also be discussed — call +82-32-821-4910
JUNGKUM FASTENER INDUSTRIAL CO., LTD. · 37 Eunbong-ro, Namdong-gu, Incheon, Korea · www.jungkum.com · Printed
