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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Material Material |
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Head Type Head Type |
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 | Threaded |
Mount Type Mount Type |
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 | Threaded Stud |
Shaft Diameter Shaft Diameter |
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Small End Diameter Small End Diameter |
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Pin Type Pin Type |
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 | Taper |
REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Shaft Type Shaft Type |
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 | Tapered |
DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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End Shape End Shape |
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 | Rounded |
End Type End Type |
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 | Plain |
Overall Height Overall Height |
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Hardness Hardness |
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Breaking Strength Breaking Strength |
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About Threaded Studs and Rods
More
Threaded Taper Pins
Threads on these pins stick out for easy removal from blind holes. Tighten the hex nut to draw the pin out. Often used for positioning components and securing assemblies, they taper at a uniform rate to fit in tapered holes. For a snug fit, use a tapered drill bit that matches the pin number for inch sizes or the small end diameter for metric sizes. They have slightly rounded edges to aid insertion.
Breaking strength is measured as single shear, which is the force required to break the pin into two pieces.
Steel pins have good strength. Pins that meet ASME B18.8.2 specifications conform to ASME standards for material and dimensions.
18-8 stainless steel pins offer a balance of strength and corrosion resistance. They may be mildly magnetic.
Length for inch pins measures the unthreaded length of the pin.
For technical drawings and 3-D models, click on a part number.
| Lg. | Small End Dia. | Rate of Taper | Thread Lg. | Thread Size | Min. Hardness | Breaking Strength, lbs./sq. in. | Pkg. Qty. | Pkg. | |
Pin Number 4—0.25" Large End Dia. | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 3/4" | 0.234" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B85 | 46,500 | 5 | 000000000 | 00000 |
| 1" | 0.229" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B85 | 46,500 | 5 | 000000000 | 0000 |
| 1 1/4" | 0.224" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B85 | 46,500 | 5 | 000000000 | 0000 |
| 1 1/2" | 0.219" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B85 | 46,500 | 5 | 000000000 | 0000 |
| 2" | 0.208" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B85 | 46,500 | 5 | 000000000 | 0000 |
| 2 1/2" | 0.198" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B85 | 46,500 | 5 | 000000000 | 0000 |
| 3" | 0.188" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B85 | 46,500 | 5 | 000000000 | 0000 |
| 4" | 0.167" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B85 | 46,500 | 5 | 000000000 | 00000 |
Pin Number 5—0.289" Large End Dia. | |||||||||
| 1" | 0.268" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B85 | 46,500 | 5 | 000000000 | 0000 |
| 1 1/2" | 0.258" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B85 | 46,500 | 5 | 000000000 | 0000 |
| 1 3/4" | 0.253" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B85 | 46,500 | 5 | 000000000 | 00000 |
| 2" | 0.247" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B85 | 46,500 | 5 | 000000000 | 00000 |
| 2 1/2" | 0.237" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B85 | 46,500 | 5 | 000000000 | 00000 |
| 3" | 0.227" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B85 | 46,500 | 5 | 000000000 | 00000 |
| 4" | 0.206" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B85 | 46,500 | 5 | 000000000 | 00000 |
| 5" | 0.185" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B85 | 46,500 | 1 | 000000000 | 0000 |
| Lg. | Small End Dia. | Rate of Taper | Thread Lg. | Thread Size | Min. Hardness | Breaking Strength, lbs./sq. in. | Pkg. Qty. | Pkg. | |
Pin Number 4—0.25" Large End Dia. | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 3/4" | 0.234" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B90 | 54,000 | 5 | 000000000 | 000000 |
| 1" | 0.229" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B90 | 54,000 | 5 | 000000000 | 00000 |
| 1 1/4" | 0.224" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B90 | 54,000 | 5 | 000000000 | 00000 |
| 1 1/2" | 0.219" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B90 | 54,000 | 5 | 000000000 | 00000 |
| 2" | 0.208" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B90 | 54,000 | 1 | 000000000 | 0000 |
| 2 1/2" | 0.198" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B90 | 54,000 | 1 | 000000000 | 0000 |
| 3" | 0.189" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B90 | 54,000 | 1 | 000000000 | 0000 |
| 4" | 0.167" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B90 | 54,000 | 1 | 000000000 | 0000 |
Pin Number 5—0.289" Large End Dia. | |||||||||
| 1" | 0.268" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B90 | 54,000 | 5 | 000000000 | 00000 |
| 1 1/2" | 0.258" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B90 | 54,000 | 1 | 000000000 | 0000 |
| 1 3/4" | 0.253" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B90 | 54,000 | 1 | 000000000 | 0000 |
| 2" | 0.247" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B90 | 54,000 | 1 | 000000000 | 0000 |
| 2 1/2" | 0.237" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B90 | 54,000 | 1 | 000000000 | 0000 |
| 3" | 0.227" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B90 | 54,000 | 1 | 000000000 | 0000 |
| 4" | 0.206" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B90 | 54,000 | 1 | 000000000 | 0000 |
| 5" | 0.185" | 1/4" per 12" | 3/8" | 1/4"-28 | Rockwell B90 | 54,000 | 1 | 000000000 | 00000 |
Partially Threaded Studs
Use the unthreaded end as a pivot point, hinge, shaft, or locator pin. Made from 18-8 stainless steel, these studs are chemical resistant and may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.
Shaft | ||||||||
|---|---|---|---|---|---|---|---|---|
| Lg. | Thread Lg. | Lg. | Dia. | Dia. Tolerance | Tensile Strength, psi | Hardness | Each | |
18-8 Stainless Steel | ||||||||
1/4"-28 | ||||||||
| 1" | 1/2" | 1/2" | 1/4" | -0.005" to 0.005" | 70,000 | Not Rated | 000000000 | 00000 |
| 1 1/2" | 3/4" | 3/4" | 1/4" | -0.005" to 0.005" | 70,000 | Not Rated | 000000000 | 0000 |
| 2" | 3/4" | 1 1/4" | 1/4" | -0.005" to 0.005" | 70,000 | Not Rated | 000000000 | 0000 |
| 2 1/2" | 3/4" | 1 3/4" | 1/4" | -0.005" to 0.005" | 70,000 | Not Rated | 000000000 | 0000 |
| 3" | 3/4" | 2 1/4" | 1/4" | -0.005" to 0.005" | 70,000 | Not Rated | 000000000 | 0000 |
| 3 1/2" | 3/4" | 2 3/4" | 1/4" | -0.005" to 0.005" | 70,000 | Not Rated | 000000000 | 0000 |
| 4" | 3/4" | 3 1/4" | 1/4" | -0.005" to 0.005" | 70,000 | Not Rated | 000000000 | 0000 |
| 4 1/2" | 3/4" | 3 3/4" | 1/4" | -0.005" to 0.005" | 70,000 | Not Rated | 000000000 | 0000 |
| 5" | 3/4" | 4 1/4" | 1/4" | -0.005" to 0.005" | 70,000 | Not Rated | 000000000 | 00000 |
| 5 1/2" | 3/4" | 4 3/4" | 1/4" | -0.005" to 0.005" | 70,000 | Not Rated | 000000000 | 00000 |
| 6" | 3/4" | 5 1/4" | 1/4" | -0.005" to 0.005" | 70,000 | Not Rated | 000000000 | 00000 |
Threaded Locating Pins
Screw the shank into a threaded hole for quick installation and removal. Mate these pins with holes in workpieces for precise alignment.
Diamond-head pins make less contact with the inside of a hole than round-head pins to reduce sticking and jamming.
For technical drawings and 3-D models, click on a part number.
Head | Thread | Round Head | Diamond Head | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Dia. (A) | Ht. (B) | Size | Lg. | Shoulder Ht. | O'all Ht. | Head Dia. Tolerance | Hardness | Each | Each | ||
Steel | |||||||||||
| 1/8" | 7/16" | 1/4"-28 | 5/16" | 3/32" | 1 1/4" | -0.001" to -0.0005" | Rockwell C60-C64 | 0000000 | 000000 | 0000000 | 000000 |
| 3/16" | 7/16" | 1/4"-28 | 5/16" | 3/32" | 1 1/4" | -0.001" to -0.0005" | Rockwell C60-C64 | 0000000 | 00000 | 0000000 | 00000 |
| 1/4" | 7/16" | 1/4"-28 | 5/16" | 3/32" | 1 1/4" | -0.0015" to -0.001" | Rockwell C60-C64 | 0000000 | 00000 | 0000000 | 00000 |
| 5/16" | 7/16" | 1/4"-28 | 5/16" | 3/32" | 1 1/4" | -0.001" to -0.0005" | Rockwell C60-C64 | 0000000 | 00000 | 0000000 | 00000 |
Threaded Locating and Support Buttons
Use these buttons to support and position workpieces and fixtures from the bottom or side. Their hex shape lets you screw them into a threaded hole with a wrench or socket. Threading makes these buttons easier to replace than press-fit, so they are a good choice for high-wear applications. They’re also known as rest buttons.
For technical drawings and 3-D models, click on a part number.