Head Style |
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Extra-Wide Low Profile Head |
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Material — Material/Finish comparison chart | |
Material Type
Steel Stainless Steel Aluminum Brass Ceramic Plastic Titanium
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Finish
Plain Zinc-Plated Black-Oxide Painted PTFE-Coated
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Drive Style |
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Combination (Phillips/Slotted) |
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Compatible with Torx drivers and bits. |
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Tamper-Resistant Pin-in-Star |
Tamper-Resistant Tri-Groove |
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Tamper-Resistant Drilled Spanner |
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System of Measurement |
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Thread Size - Key Information and Head Dimensions
Selecting the Right Thread Size |
| Inch fasteners are specified with a size and the number of threads. For example, 1/4"-28 indicates a 1/4" diameter screw with 28 threads per inch.
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Metric fasteners are specified with a thread pitch instead of a thread count. The thread pitch is the distance between threads.
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Inch Thread Size
000-120 00-90 0-80 1-64 1-72 2-56 2-64 3-48 3-56 4-40 4-48 5-40 6-32 8-32 10-24 10-32 12-24 1/4"-20 1/4"-28 5/16"-18 3/8"-16 1/2"-13
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Metric Thread Size
M1 M1.2 M1.4 M1.6 M2 M2.5 M2.6 M3 M3.5 M4 M5 M6 M8 M10
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Metric Thread Pitch
.25mm .3mm .35mm .4mm .45mm .5mm .6mm .7mm .8mm 1mm 1.25mm 1.5mm
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Length |
3/32" | 1/8" | 5/32" | 3/16" | 1/4" | 9/32" | 5/16" | 3/8" | 7/16" | 1/2" | 17/32" | 9/16" | 5/8" | 11/16" | 3/4" | 7/8" | 1" | 1-1/8" | 1-1/4" | 1-3/8" | 1-1/2" | 1-5/8" | 1-3/4" | 2" | 2-1/4" | 2-1/2" | 2-3/4" | 3" | 3-1/2" | 4" | 4-1/2" | 5" | 5-1/2" | 6" | 8" | 10" | 12" | 14" | 16" | 2 mm | 3 mm | 4 mm | 5 mm | 6 mm | 8 mm | 10 mm | 12 mm | 14 mm | 16 mm | 18 mm | 20 mm | 22 mm | 25 mm | 30 mm | 35 mm | 40 mm | 45 mm | 50 mm | 55 mm | 60 mm | 70 mm | 75 mm | 80 mm | 90 mm | 100 mm | |
Undercut Head |
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Self Locking Element |

None
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Patch
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Specifications Met |
American Society for Testing and Materials (ASTM) | Deutsche Industrie Normen (DIN) | Food and Drug Administration (FDA) | Federal Specifications (FED) | Japanese Industrial Standards (JIS) | Military Specifications (MIL) | National Aerospace Standards (NAS) | Underwriters Laboratories Recognized (UL) | Not Rated | |
Screw Quantity |
Individual Screw | Screw Assortment | |