Inch Machine Screw
Flat Countersunk Head Inch Machine Screw 1/4-20×5/8"
SFMASB063-0158
| Product Group | Inch Machine Screw |
|---|---|
| Manufacturing Basis | JK Standard (ref. ASME B18.6.3) |
| Head Type | Flat Countersunk Head |
| Thread Type | Machine Screw |
| Nominal Diameter | 1/4-20 |
| Head Dia. D | 12 mm |
| Head Height H | 3.4 mm |
| Length | 5/8" (15.8 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.