SEMS Screw
Cross Recessed (Phillips) Pan Head SEMS (Spring + Plain Washer) M4×8
SPBASB040-0080A
| Product Group | SEMS Screw |
|---|---|
| Manufacturing Basis | JK Standard (in-house) |
| Head Type | Pan Head |
| Drive Type | Cross Recessed (Phillips) |
| Recess No. | No.2 |
| Thread Type | SEMS (Spring + Plain Washer) |
| Spring Washer O.D. | 6.6 mm |
| Spring Washer Thickness | 1.1 mm |
| Plain Washer O.D. | 10 mm |
| Plain Washer Thickness | 0.8 mm |
| Nominal Diameter | M4 |
| Pitch | 0.7 mm |
| Head Dia. D | 7 mm |
| Head Height H | 2.6 mm |
| Length | 8 mm |
| Material | A2 (STS304Cu) |
| Property Class | A2-50 |
| Heat Treatment | Not Applicable |
| Finish | Pickled |
Catalog stock items are A2-50. If you need a higher grade, A2-70, A2-80, A4-70 and A4-80 are available made to order.
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This geometry data is based on actual production parts. Test certificates are issued only for lots shipped directly by us.
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.