About Hex Head Screws and Bolts
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About Tapping Screws
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Low-Strength Steel Flanged Hex Head Screws with Slotted Drive

When there’s not enough room to turn these screws with a wrench, slip a screwdriver into their slotted drive. They’re about half as strong as medium-strength steel screws—use them for light duty fastening applications, such as securing access panels. The flange distributes pressure where the screw meets the surface, so you don’t need a separate washer. All screws meet ASME standards for dimensions and SAE specifications for material quality. Head height includes the flange. Length is measured from under the flange.
All screws have a zinc plating to help prevent corrosion in wet environments. Green-dyed screws are easy to spot. They're often used as grounding screws—the flange provides a wide, flat surface for making electrical connections.
Match the thread spacing of mating components. Coarse threads are the industry standard; choose these screws if you don’t know the threads per inch. Fine threads are closely spaced to prevent loosening from vibration.
Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
Head | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Lg. | Threading | Thread Spacing | Wd. | Ht. | Flange Dia. | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
Green-Dyed Zinc-Plated Steel | ||||||||||
10-24 | ||||||||||
3/8" | Fully Threaded | Coarse | 5/16" | 5/32" | 13/32" | 60,000 | ASME B18.6.3, SAE J82 | 100 | 000000000 | 000000 |
1/2" | Fully Threaded | Coarse | 5/16" | 5/32" | 13/32" | 60,000 | ASME B18.6.3, SAE J82 | 50 | 000000000 | 0000 |
3/4" | Fully Threaded | Coarse | 5/16" | 5/32" | 13/32" | 60,000 | ASME B18.6.3, SAE J82 | 50 | 000000000 | 0000 |
10-32 | ||||||||||
1/4" | Fully Threaded | Fine | 5/16" | 5/32" | 13/32" | 60,000 | ASME B18.6.3, SAE J82 | 50 | 000000000 | 0000 |
3/8" | Fully Threaded | Fine | 5/16" | 5/32" | 13/32" | 60,000 | ASME B18.6.3, SAE J82 | 50 | 000000000 | 0000 |
1/2" | Fully Threaded | Fine | 5/16" | 5/32" | 13/32" | 60,000 | ASME B18.6.3, SAE J82 | 25 | 000000000 | 0000 |
3/4" | Fully Threaded | Fine | 5/16" | 5/32" | 13/32" | 60,000 | ASME B18.6.3, SAE J82 | 50 | 000000000 | 00000 |
1/4"-20 | ||||||||||
3/8" | Fully Threaded | Coarse | 3/8" | 15/64" | 33/64" | 60,000 | ASME B18.6.3, SAE J82 | 50 | 000000000 | 00000 |
1/2" | Fully Threaded | Coarse | 3/8" | 15/64" | 33/64" | 60,000 | ASME B18.6.3, SAE J82 | 50 | 000000000 | 0000 |
3/4" | Fully Threaded | Coarse | 3/8" | 15/64" | 33/64" | 60,000 | ASME B18.6.3, SAE J82 | 25 | 000000000 | 0000 |
Electrical Grounding Screws

The green color identifies these as grounding screws. They have a flange that provides a wide flat surface for making solid electrical connections. Screws cut threads in drilled holes as they’re turned, so they require less driving torque and cause less stress on your material than thread forming screws. Length is measured from under the flange. Head height includes the flange.
Head | |||||||||
---|---|---|---|---|---|---|---|---|---|
Lg. | Wd. | Ht. | Flange Dia. | Drill Bit Size | Tapping Screw Type | For Use In | Pkg. Qty. | Pkg. | |
Green-Dyed Zinc-Plated Steel | |||||||||
6-32 | |||||||||
1/4" | 0.25" | 0.118" | 0.328" | No. 31 | F | Aluminum, Brass, Sheet Metal, Steel | 25 | 000000000 | 00000 |
3/8" | 0.25" | 0.118" | 0.328" | No. 31 | F | Aluminum, Brass, Sheet Metal, Steel | 25 | 000000000 | 0000 |
8-32 | |||||||||
1/4" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Sheet Metal, Steel | 25 | 000000000 | 0000 |
5/16" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Sheet Metal, Steel | 25 | 000000000 | 0000 |
3/8" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Sheet Metal, Steel | 25 | 000000000 | 0000 |
1/2" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Sheet Metal, Steel | 25 | 000000000 | 0000 |
10-24 | |||||||||
3/8" | 0.313" | 0.151" | 0.414" | No. 16 | F | Aluminum, Brass, Sheet Metal, Steel | 25 | 000000000 | 0000 |
1/2" | 0.313" | 0.151" | 0.414" | No. 16 | F | Aluminum, Brass, Sheet Metal, Steel | 25 | 000000000 | 0000 |
10-32 | |||||||||
1/4" | 0.313" | 0.151" | 0.414" | No. 17 | F | Aluminum, Brass, Sheet Metal, Steel | 25 | 000000000 | 0000 |
5/16" | 0.313" | 0.151" | 0.414" | No. 17 | F | Aluminum, Brass, Sheet Metal, Steel | 25 | 000000000 | 0000 |
3/8" | 0.313" | 0.151" | 0.414" | No. 17 | F | Aluminum, Brass, Sheet Metal, Steel | 25 | 000000000 | 0000 |
1/2" | 0.313" | 0.151" | 0.414" | No. 17 | F | Aluminum, Brass, Sheet Metal, Steel | 25 | 000000000 | 0000 |
3/4" | 0.313" | 0.151" | 0.414" | No. 17 | F | Aluminum, Brass, Sheet Metal, Steel | 25 | 000000000 | 00000 |