System of Measurement System of Measurement |
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Length Length | Show |
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Length Length | Hide |
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Screw Size Screw Size |
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Tip Type Tip Type |
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![]() | Pointed |
Drive Style Drive Style |
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Finish Finish |
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Material Material |
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Threading Threading |
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![]() | Partially Threaded |
Rounded Head Style Rounded Head Style |
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![]() | Pan |
For Use In For Use In |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Drill Bit Decimal Size Equivalent Drill Bit DecimalSize Equivalent |
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Drill Bit Size Drill Bit Size |
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Approximate Threads per Inch Approximate Threads per Inch |
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Tapping Method Tapping Method |
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![]() | Thread Forming |
Drive Size Drive Size |
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Flat Head Profile Flat Head Profile |
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![]() | Standard |
Rounded Head Profile Rounded Head Profile |
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About Tapping Screws
More
Rounded Head Screws for Particleboard and Fiberboard

Sharp, angled threads cut into particleboard, medium-density fiberboard (MDF), and hardboard such as masonite without splitting. Black-oxide and black-phosphate steel screws 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 | ||||||||||
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Lg. | Dia. | Ht. | Drive Size | Drill Bit Size | Approximate Threads per Inch | Threading | Min. Thread Lg. | Pkg. Qty. | Pkg. | |
Black-Oxide Steel | ||||||||||
No. 8 | ||||||||||
1 3/8" | 0.322" | 0.115" | No. 2 | 5/64" | 11 | Partially Threaded | 0.921" | 100 | 000000000 | 000000 |
Flat Head Screws for Particleboard and Fiberboard

Beveled under the head for use in countersunk holes. Sharp, angled threads cut into particleboard, medium-density fiberboard (MDF), and hardboard such as masonite without splitting. Length is measured from the top of the head.
Black-oxide steel screws are mildly corrosion resistant in dry environments.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||||
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Lg. | Dia. | Dia. Tolerance | Ht. | Drive Size | Drill Bit Size | Approximate Threads per Inch | Threading | Min. Thread Lg. | Pkg. Qty. | Pkg. | |
Black-Oxide Steel | |||||||||||
No. 8 | |||||||||||
1 3/8" | 0.332" | -0.04" | 0.1" | No. 2 | 5/64" | 11 | Partially Threaded | 0.92" | 100 | 000000000 | 00000 |