Search Results
Clear All
Screw Features Screw Features |
|---|
 |  |
| With Washer | Sealing |
Material Material |
|---|
|
Head Type Head Type |
|---|
 | Hex |
Threading Threading |
|---|
 | Fully Threaded |
 | Partially Threaded |
Thread Direction Thread Direction |
|---|
 | Right Hand |
Drive Style Drive Style |
|---|
 | External Hex |
Washer Type Washer Type |
|---|
 |  |
| Flat | External-Tooth Lock |
Tensile Strength Tensile Strength |
|---|
|
Hardness Hardness |
|---|
|
Washer Material Washer Material |
|---|
|
Maximum O-Ring Temperature Maximum O-Ring Temperature |
|---|
|
Minimum O-Ring Temperature Minimum O-RingTemperature |
|---|
|
About Hex Head Screws and Bolts
More
Hex Head Screws with Lock Washer
Also known as Sems screws, these screws have a permanently attached but freely rotating tooth lock washer that bites into the mating surface for vibration resistance. The zinc plating provides corrosion resistance in wet environments. 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.
For technical drawings and 3-D models, click on a part number.
Head | Washer | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Thread Spacing | Wd. | Ht. | OD | Thick. | Material | Tensile Strength, psi | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | |||||||||||
6-32 | |||||||||||
| 1/4" | Fully Threaded | Coarse | 1/4" | 3/32" | 0.285" | 0.022" | Zinc-Plated Steel | 60,000 | 100 | 000000000 | 000000 |
| 3/8" | Fully Threaded | Coarse | 1/4" | 3/32" | 0.285" | 0.022" | Zinc-Plated Steel | 60,000 | 100 | 000000000 | 00000 |
| 1/2" | Fully Threaded | Coarse | 1/4" | 3/32" | 0.285" | 0.022" | Zinc-Plated Steel | 60,000 | 100 | 000000000 | 00000 |
8-32 | |||||||||||
| 1/4" | Fully Threaded | Coarse | 5/16" | 7/64" | 0.317" | 0.023" | Zinc-Plated Steel | 60,000 | 50 | 000000000 | 0000 |
| 3/8" | Fully Threaded | Coarse | 5/16" | 7/64" | 0.317" | 0.023" | Zinc-Plated Steel | 60,000 | 50 | 000000000 | 0000 |
| 1/2" | Fully Threaded | Coarse | 5/16" | 7/64" | 0.317" | 0.023" | Zinc-Plated Steel | 60,000 | 50 | 000000000 | 0000 |
10-24 | |||||||||||
| 3/8" | Fully Threaded | Coarse | 5/16" | 1/8" | 0.381" | 0.024" | Zinc-Plated Steel | 60,000 | 100 | 000000000 | 00000 |
| 1/2" | Fully Threaded | Coarse | 5/16" | 1/8" | 0.381" | 0.024" | Zinc-Plated Steel | 60,000 | 100 | 000000000 | 00000 |
10-32 | |||||||||||
| 3/8" | Fully Threaded | Fine | 5/16" | 1/8" | 0.381" | 0.024" | Zinc-Plated Steel | 60,000 | 100 | 000000000 | 00000 |
| 1/2" | Fully Threaded | Fine | 5/16" | 1/8" | 0.381" | 0.024" | Zinc-Plated Steel | 60,000 | 100 | 000000000 | 00000 |
1/4"-20 | |||||||||||
| 3/8" | Fully Threaded | Coarse | 7/16" | 3/16" | 0.475" | 0.028" | Zinc-Plated Steel | 60,000 | 100 | 000000000 | 00000 |
| 1/2" | Fully Threaded | Coarse | 7/16" | 3/16" | 0.475" | 0.028" | Zinc-Plated Steel | 60,000 | 50 | 000000000 | 00000 |
| 3/4" | Fully Threaded | Coarse | 7/16" | 3/16" | 0.475" | 0.028" | Zinc-Plated Steel | 60,000 | 50 | 000000000 | 00000 |
| 1" | Fully Threaded | Coarse | 7/16" | 3/16" | 0.475" | 0.028" | Zinc-Plated Steel | 60,000 | 25 | 000000000 | 0000 |
Hex Head Screws with Flat Washer
A freely rotating but permanently attached washer distributes pressure over a wider area than a flange, preventing damage to your material's surface. Also known as Sems screws. Made from 18-8 stainless steel, these screws have good chemical resistance and may be mildly magnetic. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
Head | Washer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Thread Spacing | Wd. | Ht. | OD | Thick. | Material | Tensile Strength, psi | Each | |
18-8 Stainless Steel | ||||||||||
1/4"-20 | ||||||||||
| 1/2" | Fully Threaded | Coarse | 7/16" | 5/32" | 0.749" | 0.064" | Stainless Steel | 100,000 | 000000000 | 00000 |
| 3/4" | Fully Threaded | Coarse | 7/16" | 5/32" | 0.749" | 0.064" | Stainless Steel | 100,000 | 000000000 | 0000 |
| 1" | Fully Threaded | Coarse | 7/16" | 5/32" | 0.749" | 0.064" | Stainless Steel | 100,000 | 000000000 | 0000 |
5/16"-18 | ||||||||||
| 1/2" | Fully Threaded | Coarse | 1/2" | 13/64" | 0.89" | 0.064" | Stainless Steel | 100,000 | 000000000 | 0000 |
| 3/4" | Fully Threaded | Coarse | 1/2" | 13/64" | 0.89" | 0.064" | Stainless Steel | 100,000 | 000000000 | 0000 |
| 1" | Fully Threaded | Coarse | 1/2" | 13/64" | 0.89" | 0.064" | Stainless Steel | 100,000 | 000000000 | 0000 |
3/8"-16 | ||||||||||
| 3/4" | Fully Threaded | Coarse | 9/16" | 15/64" | 1.015" | 0.064" | Stainless Steel | 100,000 | 000000000 | 0000 |
| 1" | Fully Threaded | Coarse | 9/16" | 15/64" | 1.015" | 0.064" | Stainless Steel | 100,000 | 000000000 | 0000 |
| 1 1/2" | Fully Threaded | Coarse | 9/16" | 15/64" | 1.015" | 0.064" | Stainless Steel | 100,000 | 000000000 | 0000 |
1/2"-13 | ||||||||||
| 1" | Fully Threaded | Coarse | 3/4" | 5/16" | 1.243" | 0.101" | Stainless Steel | 100,000 | 000000000 | 0000 |
| 1 1/2" | Fully Threaded | Coarse | 3/4" | 5/16" | 1.243" | 0.101" | Stainless Steel | 100,000 | 000000000 | 0000 |
| 2" | Fully Threaded | Coarse | 3/4" | 5/16" | 1.243" | 0.101" | Stainless Steel | 100,000 | 000000000 | 0000 |
Sealing Hex Head Screws
An O-ring under the head prevents leaks and seals out contaminants. Made of silicone, the O-ring withstands salt water, most acids, and temperatures up to 400° F. These 18-8 stainless steel screws have good chemical resistance and may be mildly magnetic. They are reusable. Length is measured from under the head.
Replacement silicone O-rings are sold separately. Choose fluoroelastomer O-rings when you need oil and chemical resistance.
For technical drawings and 3-D models, click on a part number.
Fully Threaded
Partially Threaded
Head | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Min. Thread Lg. | Thread Spacing | Wd. | Ht. | For Maximum Hole Diameter | Max. Pressure, psi | O-Ring Material | O-Ring Temperature Range, °F | Tensile Strength, psi | Each | |
18-8 Stainless Steel | ||||||||||||
1/4"-20 | ||||||||||||
| 1/4" | Fully Threaded | __ | Coarse | 7/16" | 5/32" | 0.269" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 00000 |
| 3/8" | Fully Threaded | __ | Coarse | 7/16" | 5/32" | 0.269" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 1/2" | Fully Threaded | __ | Coarse | 7/16" | 5/32" | 0.269" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 3/4" | Fully Threaded | __ | Coarse | 7/16" | 5/32" | 0.269" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 7/16" | 5/32" | 0.269" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 1 1/4" | Partially Threaded | 3/4" | Coarse | 7/16" | 5/32" | 0.269" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 1 1/2" | Partially Threaded | 3/4" | Coarse | 7/16" | 5/32" | 0.269" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 2" | Partially Threaded | 3/4" | Coarse | 7/16" | 5/32" | 0.269" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 2 1/2" | Partially Threaded | 3/4" | Coarse | 7/16" | 5/32" | 0.269" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
5/16"-18 | ||||||||||||
| 1/2" | Fully Threaded | __ | Coarse | 1/2" | 13/64" | 0.336" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 5/8" | Fully Threaded | __ | Coarse | 1/2" | 13/64" | 0.336" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 3/4" | Fully Threaded | __ | Coarse | 1/2" | 13/64" | 0.336" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 1/2" | 13/64" | 0.336" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 1 1/4" | Partially Threaded | 7/8" | Coarse | 1/2" | 13/64" | 0.336" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 1 1/2" | Partially Threaded | 7/8" | Coarse | 1/2" | 13/64" | 0.336" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 2" | Partially Threaded | 7/8" | Coarse | 1/2" | 13/64" | 0.336" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
3/8"-16 | ||||||||||||
| 1/2" | Fully Threaded | __ | Coarse | 9/16" | 15/64" | 0.399" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 5/8" | Fully Threaded | __ | Coarse | 9/16" | 15/64" | 0.399" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 3/4" | Fully Threaded | __ | Coarse | 9/16" | 15/64" | 0.399" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 9/16" | 15/64" | 0.399" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 1 1/4" | Partially Threaded | 1" | Coarse | 9/16" | 15/64" | 0.399" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 1 1/2" | Partially Threaded | 1" | Coarse | 9/16" | 15/64" | 0.399" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 2" | Partially Threaded | 1" | Coarse | 9/16" | 15/64" | 0.399" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
1/2"-13 | ||||||||||||
| 1/2" | Fully Threaded | __ | Coarse | 3/4" | 5/16" | 0.534" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 3/4" | Fully Threaded | __ | Coarse | 3/4" | 5/16" | 0.534" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 3/4" | 5/16" | 0.534" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 1 1/4" | Fully Threaded | __ | Coarse | 3/4" | 5/16" | 0.534" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 1 1/2" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 5/16" | 0.534" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 2" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 5/16" | 0.534" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 2 1/2" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 5/16" | 0.534" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 3" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 5/16" | 0.534" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 3 1/2" | Partially Threaded | 1 1/4" | Coarse | 3/4" | 5/16" | 0.534" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
5/8"-11 | ||||||||||||
| 3/4" | Fully Threaded | __ | Coarse | 15/16" | 25/64" | 0.655" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 1" | Fully Threaded | __ | Coarse | 15/16" | 25/64" | 0.655" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 1 1/2" | Fully Threaded | __ | Coarse | 15/16" | 25/64" | 0.655" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
| 2" | Fully Threaded | __ | Coarse | 15/16" | 25/64" | 0.655" | 20,000 | Silicone Rubber | -80° to 400° | 80,000 | 000000000 | 0000 |
Sanitary Hex Head Screws
Bolt down equipment in food processing or sanitary areas while sealing out contaminants. Certified by EHEDG (European Hygienic Engineering and Design Group) to meet sanitary design standards, these screws have a silicone seal underneath the head to keep liquid and debris off the threads and prevent an unsanitary metal-to-metal connection. The seal is made with metal and chemical additives, so it will set off metal detectors and show up on X-rays if it falls into your line. This helps you comply with Hazard Analysis and Critical Control Point (HACCP) programs to stop contaminated food from leaving your facility. The seal is also FDA compliant, so it’s safe for direct contact with food.
Made from 316 stainless steel, these screws won’t corrode from frequent washdowns with water or harsh cleaners. They have self-draining surfaces, which means there are no horizontal ledges, so liquid and debris will drain off completely. The smooth, polished sides and rounded edges have no pits or crevices where bacteria could grow.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Thread Spacing | Wd. | Ht. | Flange Diameter | Temperature Range, °F | Tensile Strength, psi | Performance Properties | Specifications Met | Each | |
316 Stainless Steel | |||||||||||
1/4"-20 | |||||||||||
| 1/2" | Fully Threaded | Coarse | 7/16" | 21/64" | 37/64" | -75° to 390° | 70,000 | Metal Detectable, X-Ray Detectable | EHEDG Certified, FDA Compliant 21 CFR 177.2600 | 000000000 | 000000 |
| 3/4" | Fully Threaded | Coarse | 7/16" | 21/64" | 37/64" | -75° to 390° | 70,000 | Metal Detectable, X-Ray Detectable | EHEDG Certified, FDA Compliant 21 CFR 177.2600 | 000000000 | 00000 |
| 1" | Fully Threaded | Coarse | 7/16" | 21/64" | 37/64" | -75° to 390° | 70,000 | Metal Detectable, X-Ray Detectable | EHEDG Certified, FDA Compliant 21 CFR 177.2600 | 000000000 | 00000 |
| 1 1/4" | Fully Threaded | Coarse | 7/16" | 21/64" | 37/64" | -75° to 390° | 70,000 | Metal Detectable, X-Ray Detectable | EHEDG Certified, FDA Compliant 21 CFR 177.2600 | 000000000 | 00000 |
| 1 1/2" | Fully Threaded | Coarse | 7/16" | 21/64" | 37/64" | -75° to 390° | 70,000 | Metal Detectable, X-Ray Detectable | EHEDG Certified, FDA Compliant 21 CFR 177.2600 | 000000000 | 00000 |
5/16"-18 | |||||||||||
| 3/4" | Fully Threaded | Coarse | 1/2" | 25/64" | 11/16" | -75° to 390° | 70,000 | Metal Detectable, X-Ray Detectable | EHEDG Certified, FDA Compliant 21 CFR 177.2600 | 000000000 | 00000 |
| 1" | Fully Threaded | Coarse | 1/2" | 25/64" | 11/16" | -75° to 390° | 70,000 | Metal Detectable, X-Ray Detectable | EHEDG Certified, FDA Compliant 21 CFR 177.2600 | 000000000 | 00000 |
| 1 1/4" | Fully Threaded | Coarse | 1/2" | 25/64" | 11/16" | -75° to 390° | 70,000 | Metal Detectable, X-Ray Detectable | EHEDG Certified, FDA Compliant 21 CFR 177.2600 | 000000000 | 00000 |
| 1 1/2" | Fully Threaded | Coarse | 1/2" | 25/64" | 11/16" | -75° to 390° | 70,000 | Metal Detectable, X-Ray Detectable | EHEDG Certified, FDA Compliant 21 CFR 177.2600 | 000000000 | 00000 |
3/8"-16 | |||||||||||
| 3/4" | Fully Threaded | Coarse | 9/16" | 15/32" | 25/32" | -75° to 390° | 70,000 | Metal Detectable, X-Ray Detectable | EHEDG Certified, FDA Compliant 21 CFR 177.2600 | 000000000 | 00000 |
| 1" | Fully Threaded | Coarse | 9/16" | 15/32" | 25/32" | -75° to 390° | 70,000 | Metal Detectable, X-Ray Detectable | EHEDG Certified, FDA Compliant 21 CFR 177.2600 | 000000000 | 00000 |
| 1 1/4" | Fully Threaded | Coarse | 9/16" | 15/32" | 25/32" | -75° to 390° | 70,000 | Metal Detectable, X-Ray Detectable | EHEDG Certified, FDA Compliant 21 CFR 177.2600 | 000000000 | 00000 |
| 1 1/2" | Fully Threaded | Coarse | 9/16" | 15/32" | 25/32" | -75° to 390° | 70,000 | Metal Detectable, X-Ray Detectable | EHEDG Certified, FDA Compliant 21 CFR 177.2600 | 000000000 | 00000 |
1/2"-13 | |||||||||||
| 1" | Fully Threaded | Coarse | 3/4" | 35/64" | 1 1/16" | -75° to 390° | 70,000 | Metal Detectable, X-Ray Detectable | EHEDG Certified, FDA Compliant 21 CFR 177.2600 | 000000000 | 00000 |
| 1 1/4" | Fully Threaded | Coarse | 3/4" | 35/64" | 1 1/16" | -75° to 390° | 70,000 | Metal Detectable, X-Ray Detectable | EHEDG Certified, FDA Compliant 21 CFR 177.2600 | 000000000 | 00000 |
| 1 1/2" | Fully Threaded | Coarse | 3/4" | 35/64" | 1 1/16" | -75° to 390° | 70,000 | Metal Detectable, X-Ray Detectable | EHEDG Certified, FDA Compliant 21 CFR 177.2600 | 000000000 | 00000 |
| 1 3/4" | Fully Threaded | Coarse | 3/4" | 35/64" | 1 1/16" | -75° to 390° | 70,000 | Metal Detectable, X-Ray Detectable | EHEDG Certified, FDA Compliant 21 CFR 177.2600 | 000000000 | 00000 |
| 2" | Fully Threaded | Coarse | 3/4" | 35/64" | 1 1/16" | -75° to 390° | 70,000 | Metal Detectable, X-Ray Detectable | EHEDG Certified, FDA Compliant 21 CFR 177.2600 | 000000000 | 00000 |
M6 × 1mm | |||||||||||
| 12mm | Fully Threaded | Coarse | 10mm | 8mm | 12.8mm | -75° to 390° | 70,000 | Metal Detectable, X-Ray Detectable | EHEDG Certified, FDA Compliant 21 CFR 177.2600 | 000000000 | 0000 |
| 16mm | Fully Threaded | Coarse | 10mm | 8mm | 12.8mm | -75° to 390° | 70,000 | Metal Detectable, X-Ray Detectable | EHEDG Certified, FDA Compliant 21 CFR 177.2600 | 000000000 | 0000 |
| 20mm | Fully Threaded | Coarse | 10mm | 8mm | 12.8mm | -75° to 390° | 70,000 | Metal Detectable, X-Ray Detectable | EHEDG Certified, FDA Compliant 21 CFR 177.2600 | 000000000 | 0000 |
| 25mm | Fully Threaded | Coarse | 10mm | 8mm | 12.8mm | -75° to 390° | 70,000 | Metal Detectable, X-Ray Detectable | EHEDG Certified, FDA Compliant 21 CFR 177.2600 | 000000000 | 0000 |
M8 × 1.25mm | |||||||||||
| 16mm | Fully Threaded | Coarse | 13mm | 10mm | 17.3mm | -75° to 390° | 70,000 | Metal Detectable, X-Ray Detectable | EHEDG Certified, FDA Compliant 21 CFR 177.2600 | 000000000 | 00000 |
| 20mm | Fully Threaded | Coarse | 13mm | 10mm | 17.3mm | -75° to 390° | 70,000 | Metal Detectable, X-Ray Detectable | EHEDG Certified, FDA Compliant 21 CFR 177.2600 | 000000000 | 00000 |
| 25mm | Fully Threaded | Coarse | 13mm | 10mm | 17.3mm | -75° to 390° | 70,000 | Metal Detectable, X-Ray Detectable | EHEDG Certified, FDA Compliant 21 CFR 177.2600 | 000000000 | 00000 |
| 30mm | Fully Threaded | Coarse | 13mm | 10mm | 17.3mm | -75° to 390° | 70,000 | Metal Detectable, X-Ray Detectable | EHEDG Certified, FDA Compliant 21 CFR 177.2600 | 000000000 | 00000 |