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High-Strength Steel Hex Head Screws with Phillips Drive
When clearance for a wrench is limited, these screws have a Phillips drive so you can install them with a screwdriver. With a tensile strength of 160,000 psi, they are stronger than Grade 8 screws and can be used in high-stress applications, such as valves, pumps, motors, and automotive suspension systems. The cadmium plating provides good corrosion resistance to salt water. Screws meet NAS (National Aerospace Standards) specifications for material and construction. Length is measured from under the head.
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.
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Min. Thread Lg. | Thread Spacing  | Wd. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
Cadmium-Plated Steel | |||||||||||
4-40 | |||||||||||
| 5/16" | Partially Threaded | 1/4" | Coarse | 3/16" | 1/16" | No. 1 | 160,000 | NAS1801-04-5 | 10 | 000000000 | 000000 |
| 1/2" | Partially Threaded | 7/16" | Coarse | 3/16" | 1/16" | No. 1 | 160,000 | NAS1801-04-8 | 10 | 000000000 | 00000 |
| 5/8" | Partially Threaded | 9/16" | Coarse | 3/16" | 1/16" | No. 1 | 160,000 | NAS1801-04-10 | 10 | 000000000 | 00000 |
| 3/4" | Partially Threaded | 11/16" | Coarse | 3/16" | 1/16" | No. 1 | 160,000 | NAS1801-04-12 | 10 | 000000000 | 00000 |
| 1" | Partially Threaded | 15/16" | Coarse | 3/16" | 1/16" | No. 1 | 160,000 | NAS1801-04-16 | 1 | 000000000 | 0000 |
6-32 | |||||||||||
| 3/8" | Partially Threaded | 5/16" | Coarse | 1/4" | 3/32" | No. 2 | 160,000 | NAS1801-06-6 | 1 | 000000000 | 0000 |
| 1/2" | Partially Threaded | 7/16" | Coarse | 1/4" | 3/32" | No. 2 | 160,000 | NAS1801-06-8 | 10 | 000000000 | 00000 |
| 3/4" | Partially Threaded | 11/16" | Coarse | 1/4" | 3/32" | No. 2 | 160,000 | NAS1801-06-12 | 5 | 000000000 | 00000 |
8-32 | |||||||||||
| 3/8" | Partially Threaded | 5/16" | Coarse | 1/4" | 3/32" | No. 2 | 160,000 | NAS1801-08-6 | 25 | 000000000 | 00000 |
| 1/2" | Partially Threaded | 7/16" | Coarse | 1/4" | 3/32" | No. 2 | 160,000 | NAS1801-08-8 | 25 | 000000000 | 00000 |
| 5/8" | Partially Threaded | 9/16" | Coarse | 1/4" | 3/32" | No. 2 | 160,000 | NAS1801-08-10 | 10 | 000000000 | 00000 |
| 3/4" | Partially Threaded | 11/16" | Coarse | 1/4" | 3/32" | No. 2 | 160,000 | NAS1801-08-12 | 5 | 000000000 | 00000 |
| 1" | Partially Threaded | 15/16" | Coarse | 1/4" | 3/32" | No. 2 | 160,000 | NAS1801-08-16 | 5 | 000000000 | 0000 |
10-32 | |||||||||||
| 3/8" | Partially Threaded | 5/16" | Fine | 5/16" | 1/8" | No. 2 | 160,000 | NAS1801-3-6 | 10 | 000000000 | 0000 |
| 1/2" | Partially Threaded | 7/16" | Fine | 5/16" | 1/8" | No. 2 | 160,000 | NAS1801-3-8 | 10 | 000000000 | 00000 |
| 5/8" | Partially Threaded | 9/16" | Fine | 5/16" | 1/8" | No. 2 | 160,000 | NAS1801-3-10 | 10 | 000000000 | 00000 |
| 3/4" | Partially Threaded | 11/16" | Fine | 5/16" | 1/8" | No. 2 | 160,000 | NAS1801-3-12 | 25 | 000000000 | 00000 |
| 1" | Partially Threaded | 15/16" | Fine | 5/16" | 1/8" | No. 2 | 160,000 | NAS1801-3-16 | 10 | 000000000 | 00000 |
| 1 1/2" | Partially Threaded | 1 7/16" | Fine | 5/16" | 1/8" | No. 2 | 160,000 | NAS1801-3-24 | 5 | 000000000 | 00000 |
1/4"-28 | |||||||||||
| 5/8" | Partially Threaded | 9/16" | Fine | 3/8" | 1/4" | No. 3 | 160,000 | NAS1801-4-10 | 1 | 000000000 | 0000 |
| 3/4" | Partially Threaded | 11/16" | Fine | 3/8" | 1/4" | No. 3 | 160,000 | NAS1801-4-12 | 1 | 000000000 | 00000 |
| 1" | Partially Threaded | 15/16" | Fine | 3/8" | 1/4" | No. 3 | 160,000 | NAS1801-4-16 | 1 | 000000000 | 00000 |
| 1 1/4" | Partially Threaded | 1 3/16" | Fine | 3/8" | 1/4" | No. 3 | 160,000 | NAS1801-4-20 | 1 | 000000000 | 0000 |
Low-Strength Steel Flanged Hex Head Screws with Phillips Drive
When there’s not enough room to turn these screws with a wrench, slip a screwdriver into their Phillips drive. About half as strong as medium-strength steel screws, they’re best 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. A zinc plating helps prevent corrosion in wet environments. 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.
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. | |
Zinc-Plated Steel | ||||||||||
10-24 | ||||||||||
| 3/8" | Fully Threaded | Coarse | 5/16" | 5/32" | 13/32" | 60,000 | ASME B18.6.3, SAE J82 | 50 | 000000000 | 00000 |
| 3/4" | Fully Threaded | Coarse | 5/16" | 5/32" | 13/32" | 60,000 | ASME B18.6.3, SAE J82 | 50 | 000000000 | 00000 |
| 1" | Fully Threaded | Coarse | 5/16" | 5/32" | 13/32" | 60,000 | ASME B18.6.3, SAE J82 | 25 | 000000000 | 0000 |
10-32 | ||||||||||
| 1/2" | Fully Threaded | Fine | 5/16" | 5/32" | 13/32" | 60,000 | ASME B18.6.3, SAE J82 | 50 | 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" | Fully Threaded | Fine | 5/16" | 5/32" | 13/32" | 60,000 | ASME B18.6.3, SAE J82 | 25 | 000000000 | 0000 |
1/4"-20 | ||||||||||
| 1/2" | Fully Threaded | Coarse | 3/8" | 15/64" | 33/64" | 60,000 | ASME B18.6.3, SAE J82 | 25 | 000000000 | 00000 |
| 3/4" | Fully Threaded | Coarse | 3/8" | 15/64" | 33/64" | 60,000 | ASME B18.6.3, SAE J82 | 25 | 000000000 | 00000 |
| 1" | Fully Threaded | Coarse | 3/8" | 15/64" | 33/64" | 60,000 | ASME B18.6.3, SAE J82 | 25 | 000000000 | 00000 |
5/16"-18 | ||||||||||
| 3/4" | Fully Threaded | Coarse | 1/2" | 9/32" | 43/64" | 60,000 | ASME B18.6.3, SAE J82 | 25 | 000000000 | 00000 |
| 1" | Fully Threaded | Coarse | 1/2" | 9/32" | 43/64" | 60,000 | ASME B18.6.3, SAE J82 | 25 | 000000000 | 00000 |
| 1 1/4" | Fully Threaded | Coarse | 1/2" | 9/32" | 43/64" | 60,000 | ASME B18.6.3, SAE J82 | 25 | 000000000 | 00000 |
| 1 1/2" | Fully Threaded | Coarse | 1/2" | 9/32" | 43/64" | 60,000 | ASME B18.6.3, SAE J82 | 25 | 000000000 | 00000 |
Stainless Steel Flanged Hex Head Screws with Phillips Drive
When a wrench won’t fit, turn these screws with a Phillips screwdriver instead. Made of 18-8 stainless steel, they resist corrosion from mild chemicals and water. They may be mildly magnetic. The flange distributes pressure where the screw meets the surface, so you don’t need a separate washer. All screws meet ASME B18.6.3, which means they’re made to strict dimensional standards. Head height includes the flange. Length is measured from under the flange.
Match the thread spacing of mating components. Coarse threads are the industry standard; choose these screws if you don’t know the pitch or 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. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||||||||
8-32 | |||||||||||
| 3/8" | Fully Threaded | Coarse | 1/4" | 9/64" | 11/32" | No. 2 | 80,000 | ASME B18.6.3 | 25 | 000000000 | 000000 |
| 1/2" | Fully Threaded | Coarse | 1/4" | 9/64" | 11/32" | No. 2 | 80,000 | ASME B18.6.3 | 25 | 000000000 | 0000 |
| 3/4" | Fully Threaded | Coarse | 1/4" | 9/64" | 11/32" | No. 2 | 80,000 | ASME B18.6.3 | 25 | 000000000 | 0000 |
10-24 | |||||||||||
| 1/2" | Fully Threaded | Coarse | 5/16" | 5/32" | 13/32" | No. 2 | 80,000 | ASME B18.6.3 | 25 | 000000000 | 00000 |
| 3/4" | Fully Threaded | Coarse | 5/16" | 5/32" | 13/32" | No. 2 | 80,000 | ASME B18.6.3 | 25 | 000000000 | 00000 |
10-32 | |||||||||||
| 3/8" | Fully Threaded | Fine | 5/16" | 5/32" | 13/32" | No. 2 | 80,000 | ASME B18.6.3 | 25 | 000000000 | 0000 |
| 1/2" | Fully Threaded | Fine | 5/16" | 5/32" | 13/32" | No. 2 | 80,000 | ASME B18.6.3 | 25 | 000000000 | 00000 |
| 3/4" | Fully Threaded | Fine | 5/16" | 5/32" | 13/32" | No. 2 | 80,000 | ASME B18.6.3 | 25 | 000000000 | 00000 |
1/4"-20 | |||||||||||
| 3/8" | Fully Threaded | Coarse | 3/8" | 15/64" | 33/64" | No. 3 | 80,000 | ASME B18.6.3 | 10 | 000000000 | 00000 |
| 1/2" | Fully Threaded | Coarse | 3/8" | 15/64" | 33/64" | No. 3 | 80,000 | ASME B18.6.3 | 10 | 000000000 | 00000 |
| 5/8" | Fully Threaded | Coarse | 3/8" | 15/64" | 33/64" | No. 3 | 80,000 | ASME B18.6.3 | 10 | 000000000 | 00000 |
| 3/4" | Fully Threaded | Coarse | 3/8" | 15/64" | 33/64" | No. 3 | 80,000 | ASME B18.6.3 | 10 | 000000000 | 00000 |
Low-Strength Steel Serrated-Flange Hex Head Screws with Phillips Drive
When there’s not enough room to turn these screws with a wrench, slip a screwdriver into their Phillips drive. About half as strong as medium-strength steel screws, they’re best for light duty fastening applications, such as securing access panels. Serrations under the head grip the surface of your material to help resist vibration. The flange distributes pressure where the screw meets the surface, so you don’t need a separate washer. A zinc plating helps prevent corrosion in wet environments. All screws meet ASME specifications for dimensions and SAE specifications for material quality. Head height includes the flange. Length is measured from under the flange.
Match the thread spacing of mating components. Coarse threads are the industry standard; choose these screws if you don’t know the pitch or 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. | |
Zinc-Plated Steel | ||||||||||
8-32 | ||||||||||
| 1/4" | Fully Threaded | Coarse | 1/4" | 9/64" | 11/32" | 60,000 | ASME B18.6.3, SAE J82 | 100 | 000000000 | 000000 |
| 3/8" | Fully Threaded | Coarse | 1/4" | 9/64" | 11/32" | 60,000 | ASME B18.6.3, SAE J82 | 100 | 000000000 | 00000 |
10-24 | ||||||||||
| 3/8" | Fully Threaded | Coarse | 5/16" | 5/32" | 13/32" | 60,000 | ASME B18.6.3, SAE J82 | 100 | 000000000 | 00000 |
| 1/2" | Fully Threaded | Coarse | 5/16" | 5/32" | 13/32" | 60,000 | ASME B18.6.3, SAE J82 | 100 | 000000000 | 00000 |
| 3/4" | Fully Threaded | Coarse | 5/16" | 5/32" | 13/32" | 60,000 | ASME B18.6.3, SAE J82 | 50 | 000000000 | 0000 |
10-32 | ||||||||||
| 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 | 50 | 000000000 | 0000 |
| 3/4" | Fully Threaded | Fine | 5/16" | 5/32" | 13/32" | 60,000 | ASME B18.6.3, SAE J82 | 50 | 000000000 | 0000 |
1/4"-20 | ||||||||||
| 1/2" | Fully Threaded | Coarse | 3/8" | 15/64" | 33/64" | 60,000 | ASME B18.6.3, SAE J82 | 50 | 000000000 | 00000 |
| 3/4" | Fully Threaded | Coarse | 3/8" | 15/64" | 33/64" | 60,000 | ASME B18.6.3, SAE J82 | 25 | 000000000 | 0000 |
| 1" | Fully Threaded | Coarse | 3/8" | 15/64" | 33/64" | 60,000 | ASME B18.6.3, SAE J82 | 25 | 000000000 | 0000 |
| 1 1/4" | Fully Threaded | Coarse | 3/8" | 15/64" | 33/64" | 60,000 | ASME B18.6.3, SAE J82 | 25 | 000000000 | 0000 |
Steel Hex Head Thread-Cutting Screws for Metal
These steel screws are zinc plated to resist corrosion in wet environments. They have a hex head for a secure grip with a wrench and a flange to reduce the risk of crushing thin metal. 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.
Screws meet ASME B18.6.3 dimensional standards. They also meet SAE J933 standards for material quality.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Wd. | Ht. | Flange Dia. | Drill Bit Size | Tapping Screw Type | For Use In | Specifications Met | Pkg. Qty. | Pkg. | |
External Hex/Phillips—Zinc-Plated Steel | ||||||||||
8-32 | ||||||||||
| 3/8" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 50 | 000000000 | 000000 |
| 1/2" | 0.25" | 0.141" | 0.348" | No. 26 | F | Aluminum, Brass, Cast Iron, Sheet Metal | ASME B18.6.3, SAE J933 | 25 | 000000000 | 0000 |
Fastener Maintenance Assortments
Black-oxide steel fasteners resist corrosion in dry environments.
Zinc-plated steel fasteners resist corrosion in wet environments.
18-8 stainless steel fasteners are chemical resistant and may be mildly magnetic.
| Number of Pieces | Includes | Drive Style | Specifications Met | Container Type | Each | |
Inch | ||||||
|---|---|---|---|---|---|---|
Zinc-Plated and Black-Oxide Steel | ||||||
| 3,345 | 90 Socket Head Screws (6-32 to 5/8"-11) 480 Rounded Head Screws (6-32 to 1/4"-20) 705 Rounded Head Sheet Metal Screws (No. 4 to No. 14) 500 Wood Screws (No. 4 to No. 8) 490 Hex Nuts (6-32 to 1/4"-20) 490 Flat Washers (For No. 6 to 1/4" Screw Sizes) 490 Lock Washers (For No. 6 to 1/4" Screw Sizes) 100 Ring, Spade, and Butt Connectors | Hex, Phillips, Slotted | __ | Plastic Cabinet | 000000000 | 0000000 |
Metric | ||||||
Zinc-Plated and Black-Oxide Steel | ||||||
| 7,060 | 570 Socket Head Screws (M4 to M12) 750 Rounded Head Screws (M3 to M6) 580 Hex Head Screws (M4 to M12) 60 Set Screws (M4 to M6) 1,475 Hex Nuts (M3 to M12) 1,225 Flat Washers (For M4 to M12 Screw Sizes) 1,600 Lock Washers (For M3 to M12 Screw Sizes) 800 Spring Lock Washers (For M4 to M8 Screw Sizes) | External Hex, Hex, Phillips | DIN 125, DIN 127B, DIN 7985, DIN 912, DIN 916, DIN 933, DIN 934 | Metal Drawer Cabinet | 000000000 | 00000000 |
18-8 Stainless Steel | ||||||
| 7,060 | 570 Socket Head Screws (M4 to M12) 750 Rounded Head Screws (M3 to M6) 580 Hex Head Screws (M4 to M12) 60 Set Screws (M4 to M6) 1,475 Hex Nuts (M3 to M12) 1,225 Flat Washers (For M4 to M12 Screw Sizes) 1,600 Lock Washers (For M3 to M12 Screw Sizes) 800 Spring Lock Washers (For M4 to M8 Screw Sizes) | External Hex, Hex, Phillips | DIN 125, DIN 127B, DIN 7985, DIN 912, DIN 916, DIN 933, DIN 934 | Metal Drawer Cabinet | 000000000 | 00000000 |