S-92765A361 1/4"-28 x 1" ASME B18.3, ASTM F912 Set Screws
Set Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Enhanced corrosion resistance from the black-oxide coating, extending service life in demanding environments.
- Superior thread engagement and vibration resistance due to the precise Class 3A UNF fine thread fit.
- High-strength, durable fastening ensured by the alloy steel construction with a Rockwell C45 hardness rating.
- Secure, flush installation with the headless design and oval tip, preventing protrusion and component damage.
- Reliable, high-torque installation facilitated by the 1/8" hex drive, allowing for a secure grip.
- Broad industrial compatibility with right-hand, fine threads (1/4"-28 UNF) common in precision assemblies.
- Compliance with major industry and environmental standards including ASME B18.3, RoHS 3, and REACH.
Professional Applications & Engineering Value
This black-oxide alloy steel set screw is engineered to address critical challenges in industrial assembly, such as vibration-induced loosening and corrosion. The Class 3A thread fit on the 1/4"-28 UNF fine threads provides exceptional clamping force and resistance to shock and vibration in machinery, automotive, and aerospace components. The headless design with an oval tip allows for a flush, secure fit in collars, shafts, and pulleys, minimizing stress concentration and preventing damage to mating parts. The Rockwell C45 hardness ensures the screw maintains its form and function under high stress, while the hex drive offers reliable installation torque. Its compliance with ASME B18.3 guarantees dimensional consistency and performance reliability for engineers and procurement specialists.
Specification Summary & Compliance
This set screw features a 1/4"-28 UNF thread with a Class 3A fit for high precision, a fine thread spacing, and a length of 1 inch. It is manufactured from alloy steel with a black-oxide surface finish and a hardness of Rockwell C45. The product conforms to the ASME B18.3 specification and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations.
