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Simpson Strong-Tie Strong-Drive SDWH Timber-Hex Screw, 0.276 in., Hot-Dip Galvanized
*فقط قیمتگذاری آنلاین
Strong-Drive SDWH Timber-Hex Screw, Hot-Dip Galvanized
The SDWH Timber-Hex HDG is a 0.276 in. heavy structural wood screw with a hot-dip galvanized coating suited to coastal, marine and flood-resistant construction. The 0.93 in. integral washer head means no separate washer.
Drive it with a 1/2 in. low-speed corded drill and 3/8 in. hex; a cordless impact driver may not have the torque for the long lengths.
Features and Common Uses
- 0.276 in. shank, 3 in. thread
- ASTM A153 Class C hot-dip galvanized
- SawTooth point for fast starts with no predrill
- 0.93 in. integral washer head, 3/8 in. hex drive
Commonly used for:
- Deck ledgers and beam connections
- Pile and pier connections, docks and boardwalks
- Coastal and flood-resistant construction
Specifications
| Brand | Simpson Strong-Tie |
|---|---|
| Models | SDWH271200GMB (12 in.), SDWH271500GMB (15 in.) |
| Shank | 0.276 in. |
| Thread length | 3 in. |
| Drive | 3/8 in. hex |
| Head diameter | 0.930 in. washer head |
| Coating | Hot-dip galvanized, ASTM A153 Class C |
Dimensions are from Simpson's product data for the SDWH271200GMB and SDWH271500GMB. Design values depend on species and penetration; see the fastening catalogue. Source: Simpson Strong-Tie Fastening Systems Catalog C-F-2025, pp. 58-90 (PDF).
How to Install
- Choose a length that fully embeds the thread in the main member.
- Drive with a 1/2 in. low-speed corded drill until the washer head is snug.
Full installation notes and load tables: Source: Simpson Strong-Tie Fastening Systems Catalog C-F-2025, pp. 58-90 (PDF).
Frequently Asked Questions
Is it good for salt air?
Simpson lists coastal, salt-air, marine and dock applications for this hot-dip galvanized screw.
Do I need a washer?
No. The 0.93 in. integral washer head replaces one.