Filter by
System of Measurement
Thread Size
Screw Features
Fastener Head Type
Drive Style
Material
Military Specification
Maximum Threadlocker Temperature
Rounded Head Style
DFARS Specialty Metals
Export Control Classification Number (ECCN)
Locking Type
Maximum O-Ring Temperature
Minimum O-Ring Temperature
Minimum Threadlocker Temperature
O-Ring Material
REACH
RoHS
Hardness
Tensile Strength
Thread Fit
Threadlocker Type
Thread Spacing
About Rounded Head Screws
More
Vibration-Resistant Sealing Rounded Head Screws
A nylon patch bonded to the threads of these screws adds friction to prevent loosening from vibration while an O-ring prevents leaks and seals out contaminants. Made from 18-8 stainless steel, they have good chemical resistance and may be mildly magnetic. They’re passivated for added protection against oxidation and corrosion. The silicone O-ring withstands salt water and is good for a wide range of temperatures. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
| Lg. | Threading | Head Dia. | Head Ht. | For Max. Hole Dia. | Drive Size | Tensile Strength, psi  | Thread Locker Temp. Range, °F | O-Ring Temp. Range, °F | Max. Pressure, psi | Specifications Met | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
8-32 | |||||||||||||
| 1/4" | Fully Threaded | 0.347" | 0.115" | 0.177" | No. 2 | 70,000 | -40° to 225° | -80° to 400° | 1,500 | MIL-DTL-18240, MS3212-21L, NASM3212, NASM82496 | 5 | 000000000 | 00000 |