System of Measurement System of Measurement |
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Thread Size Thread Size | Show |
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Thread Size Thread Size | Hide |
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Grip Style Grip Style |
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 | Two Arm |
Material Material |
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Mount Type Mount Type |
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| Threaded Hole | Threaded Stud |
Head Type Head Type |
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 | Tee |
Finish Finish |
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Thread Spacing Thread Spacing |
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Color Color |
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 | Black |
RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Maximum Temperature Maximum Temperature |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Stud Material Stud Material |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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About Hex Head Screws and Bolts
More
T-Bolts
Also known as tank-strap bolts, these T-bolts are commonly used with a band clamp or a strap to hold fuel tanks and other objects in place. The large T-shaped head provides a secure grip for steady tightening. Length is measured from the top of 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.
Black-oxide steel T-bolts are mildly corrosion resistant in dry environments.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Lg. | Threading | Thread Lg. | Thread Spacing | Wd. | Thick. | Tensile Strength, psi | Each | |
Black-Oxide Steel | |||||||||
| 1/4"-20 | 2 5/8" | Partially Threaded | 1 1/2" | Coarse | 1 1/4" | 1/4" | Not Rated | 000000000 | 000000 |
T-Bolts with Collar
Also known as clamping pins, these bolts have a collar that slides along the shaft and can be welded in place to hold work and prevent over torquing. The large T-shaped head provides a secure grip for steady tightening. The black-oxide finish provides corrosion resistance in dry environments. Length is measured from the top of the head.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Lg. | Threading | Thread Lg. | Thread Spacing | Wd. | Thick. | Tensile Strength, psi | Each | |
Black-Oxide Steel | |||||||||
| 1/4"-20 | 4 3/8" | Partially Threaded | 3/4" | Coarse | 2 1/2" | 3/8" | 70,000 | 000000000 | 000000 |
Threaded-Hole Knobs
Install these knobs on a threaded stud. They provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery.
Stainless steel knobs have excellent corrosion resistance, making them the best choice for harsh environments. They also have good chemical resistance.
Plastic knobs are a lightweight alternative to metal. They resist oil, grease, and solvents. Phenolic has good scratch resistance. Polypropylene has good impact resistance. Nylon has good wear resistance. ABS has excellent impact resistance.
For technical drawings and 3-D models, click on a part number.
Thread | Head | Hub | Each | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Size | Dp. | Wd. | Ht. | Dia. | Ht. | Insert Material | Temperature Range, °F | 1-9 | 10-Up | |
Style 13—Two Arm Grip | ||||||||||
Black Phenolic Plastic | ||||||||||
| 1/4"-20 | 3/8" | 1 1/8" | 5/8" | 1/2" | 1/8" | Brass | -30 to 400° | 0000000 | 00000 | 00000 |
| 1/4"-20 | 3/8" | 2" | 5/8" | 3/4" | 1/2" | Brass | -30 to 400° | 00000000 | 0000 | 0000 |
| 1/4"-20 | 3/8" | 2 1/2" | 5/8" | 3/4" | 1/2" | Brass | -30 to 400° | 00000000 | 0000 | 0000 |
Black Polypropylene Plastic | ||||||||||
| 1/4"-20 | 1/2" | 1 1/2" | 5/8" | 3/4" | 1/8" | Brass | -15 to 125° | 0000000 | 0000 | 0000 |
Black Nylon Plastic | ||||||||||
| 1/4"-20 | 1/2" | 2 1/2" | 5/8" | 3/4" | 1/2" | Brass | -15 to 150° | 00000000 | 0000 | 0000 |
Style 14—Two Arm Grip | ||||||||||
Black Polypropylene Plastic | ||||||||||
| 1/4"-20 | 1/2" | 2 1/4" | 3/4" | 3/4" | 11/16" | Brass | -15 to 125° | 0000000 | 0000 | 0000 |
Style 15—Two Arm Grip | ||||||||||
303 Stainless Steel | ||||||||||
| 1/4"-20 | 3/8" | 2" | 1/2" | 9/16" | 7/16" | __ | __ | 0000000 | 00000 | 00000 |
Style 18—Two Arm Grip | ||||||||||
Black Polypropylene Plastic | ||||||||||
| 1/4"-20 | 1/2" | 3" | 3/8" | 13/16" | 13/16" | Brass | -15 to 125° | 0000000 | 0000 | 0000 |
Style 19—Two Arm Grip | ||||||||||
Black ABS Plastic | ||||||||||
| 1/4"-20 | 3/8" | 1 1/4" | 13/16" | 5/8" | 1/2" | Brass | -15 to 125° | 0000000 | 0000 | 0000 |
Threaded-Stud Knobs
Mount these knobs into a threaded hole. They provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery.
Plastic knobs are a lightweight alternative to metal. They resist oil, grease, and solvents. Phenolic has good scratch resistance. Nylon has good wear resistance. Polypropylene has good impact resistance.
For technical drawings and 3-D models, click on a part number.
Head | Hub | Each | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Thread Size | Stud Lg. | Wd. | Ht. | Dia. | Ht. | Stud Material | Temperature Range, °F | 1-9 | 10-Up | |
Style 7—Two Arm Grip | ||||||||||
Black Phenolic Plastic | ||||||||||
| 1/4"-20 | 1/2" | 1 1/8" | 5/8" | 1/2" | 1/8" | Steel | -30° to 400° | 0000000 | 00000 | 00000 |
| 1/4"-20 | 9/16" | 2" | 5/8" | 3/4" | 1/2" | Steel | -30° to 400° | 00000000 | 0000 | 0000 |
| 1/4"-20 | 3/4" | 2" | 5/8" | 3/4" | 1/2" | Stainless Steel | -30° to 400° | 00000000 | 0000 | 0000 |
| 1/4"-20 | 1" | 2" | 5/8" | 3/4" | 1/2" | Steel | -30° to 400° | 00000000 | 0000 | 0000 |
| 1/4"-20 | 1" | 2 1/2" | 5/8" | 3/4" | 1/2" | Steel | -30° to 400° | 00000000 | 0000 | 0000 |
Black Nylon Plastic | ||||||||||
| 1/4"-20 | 1" | 1 1/8" | 9/16" | 1/2" | 1/8" | Steel | -15° to 150° | 00000000 | 0000 | 0000 |
Style 8—Two Arm Grip | ||||||||||
Black Polypropylene Plastic | ||||||||||
| 1/4"-20 | 1/2" | 2 1/4" | 3/4" | 3/4" | 11/16" | Steel | -15° to 125° | 00000000 | 0000 | 0000 |
Style 10—Two Arm Grip | ||||||||||
Black Nylon Plastic | ||||||||||
| 1/4"-20 | 1/2" | 3" | 3/8" | 3/4" | 13/16" | Steel | -15° to 150° | 00000000 | 0000 | 0000 |
Style 11—Two Arm Grip | ||||||||||
Black Polypropylene Plastic | ||||||||||
| 1/4"-20 | 1/2" | 1 1/4" | 3/4" | 1/2" | 1/8" | Steel | -15° to 125° | 00000000 | 0000 | 0000 |
Threaded Through-Hole Knobs
Long shafts can thread through these knobs for mounting versatility. The knobs provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery.
Plastic knobs are a lightweight alternative to metal. They resist oil, grease, and solvents. Nylon has good wear resistance.
For technical drawings and 3-D models, click on a part number.
Thread | Head | Hub | Each | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Size | Dp. | Wd. | Ht. | Dia. | Ht. | Insert Material | Temperature Range, °F | 1-9 | 10-Up | |
Style 2—Two Arm Grip | ||||||||||
Black Nylon Plastic | ||||||||||
| 1/4"-20 | 3/8" | 1 1/8" | 9/16" | 1/2" | 1/8" | Brass | -15° to 150° | 0000000 | 00000 | 00000 |
Vibration-Resistant Threaded Through-Hole Knobs
Like locknuts, these knobs have a nylon insert that grips threads to resist loosening. Long shafts can thread through these knobs for mounting versatility. Use the knobs as a grip to position, tighten, and hold fixtures, equipment, and machinery. Made of plastic, all resist oil, grease, and solvents.
For technical drawings and 3-D models, click on a part number.
Thread | Head | Hub | Each | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Size | Dp. | Wd. | Ht. | Dia. | Ht. | Insert Material | Temperature Range, °F | 1-9 | 10-Up | |
Style 1—Two Arm Grip | ||||||||||
Black Polypropylene Plastic | ||||||||||
| 1/4"-20 | 5/16" | 2" | 5/8" | 3/4" | 1/2" | Zinc-Plated Steel | -15° to 125° | 00000000 | 00000 | 00000 |