System of Measurement System of Measurement |
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Length Length | Show |
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Length Length | Hide |
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Tip Type Tip Type |
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For Use In For Use In |
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Material Material |
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Threading Threading |
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Finish Finish |
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Flat Head Profile Flat Head Profile |
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Tapping Method Tapping Method |
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 | Thread Forming |
Hardwood Drill Bit Size Decimal Equivalent Hardwood Drill Bit SizeDecimal Equivalent |
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Softwood Drill Bit Size Decimal Equivalent Softwood Drill Bit SizeDecimal Equivalent |
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Rounded Head Style Rounded Head Style |
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About Tapping Screws
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Steel Phillips Flat Head Screws for Wood
These steel screws are zinc plated to resist corrosion in wet environments. All are beveled under the head for use in countersunk holes. They press threads into material for a tight, secure hold. To prevent splitting, drill a pilot hole slightly smaller than the screw. Length is measured from the top of the head.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Ht. | Drive Size | Softwood Drill Bit Size | Hardwood Drill Bit Size | Approximate Threads per Inch | Threading | Min. Thread Lg. | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | |||||||||||
No. 8 | |||||||||||
| 7/8" | 0.332" | 0.1" | No. 2 | 5/64" | 3/32" | 15 | Partially Threaded | 0.583" | 100 | 000000000 | 00000 |
18-8 Stainless Steel Phillips Flat Head Screws for Wood
18-8 stainless steel screws have good chemical resistance and are a good choice for ACQ-treated (arsenic-free) lumber. All are beveled under the head for use in countersunk holes. They press threads into material for a tight, secure hold. To prevent splitting, drill a pilot hole slightly smaller than the screw. They may be mildly magnetic. Length is measured from the top of the head.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Ht. | Drive Size | Softwood Drill Bit Size | Hardwood Drill Bit Size | Approximate Threads per Inch | Threading | Min. Thread Lg. | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||||||||
No. 8 | |||||||||||
| 7/8" | 0.332" | 0.1" | No. 2 | 5/64" | 3/32" | 15 | Partially Threaded | 0.656" | 50 | 000000000 | 00000 |
Brass Phillips Flat Head Screws for Wood
Brass screws are corrosion resistant in wet environments, electrically conductive, and nonmagnetic. All are beveled under the head for use in countersunk holes. They press threads into material for a tight, secure hold. To prevent splitting, drill a pilot hole slightly smaller than the screw. Length is measured from the top of the head.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Ht. | Drive Size | Softwood Drill Bit Size | Hardwood Drill Bit Size | Approximate Threads per Inch | Threading | Min. Thread Lg. | Pkg. Qty. | Pkg. | |
Brass | |||||||||||
No. 4 | |||||||||||
| 7/8" | 0.225" | 0.067" | No. 1 | 3/64" | 1/16" | 22 | Partially Threaded | 0.583" | 100 | 000000000 | 00000 |
No. 5 | |||||||||||
| 7/8" | 0.252" | 0.075" | No. 2 | 1/16" | 5/64" | 20 | Partially Threaded | 0.583" | 100 | 000000000 | 00000 |
No. 6 | |||||||||||
| 7/8" | 0.279" | 0.083" | No. 2 | 1/16" | 5/64" | 18 | Partially Threaded | 0.583" | 100 | 000000000 | 00000 |
No. 8 | |||||||||||
| 7/8" | 0.332" | 0.1" | No. 2 | 5/64" | 3/32" | 15 | Partially Threaded | 0.583" | 50 | 000000000 | 0000 |
Steel Slotted Flat Head Screws for Wood
These steel screws are zinc plated to resist corrosion in wet environments. All are beveled under the head for use in countersunk holes. They press threads into material for a tight, secure hold. To prevent splitting, drill a pilot hole slightly smaller than the screw. Length is measured from the top of the head.
For technical drawings and 3-D models, click on a part number.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Ht. | Softwood Drill Bit Size | Hardwood Drill Bit Size | Approximate Threads per Inch | Threading | Min. Thread Lg. | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | ||||||||||
No. 10 | ||||||||||
| 7/8" | 0.385" | 0.116" | 3/32" | 7/64" | 13 | Partially Threaded | 0.191" | 100 | 000000000 | 00000 |
Rounded Head Screws for Particleboard and Fiberboard
Sharp, angled threads cut into particleboard, medium-density fiberboard (MDF), and hardboard such as masonite without splitting. These screws are black-oxide steel to resist corrosion in dry environments. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Lg. | Dia. | Ht. | Drive Size | Drill Bit Size | Approximate Threads per Inch | Threading | Pkg. Qty. | Pkg. | |
Black-Oxide Steel | |||||||||
No. 8 | |||||||||
| 7/8" | 0.322" | 0.115" | No. 2 | 5/64" | 11 | Fully Threaded | 100 | 000000000 | 00000 |