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The VALUE COLLECTION 403140PS is a 3/8-16 partially threaded hex head cap screw designed for general-purpose fastening in mechanical, HVAC, plumbing, and structural assembly applications. Manufactured from Grade 2 steel with a zinc-plated finish, this fastener measures 6 inches under the head and follows Unified National Coarse (UNC) thread standards. The partial threading allows for precise clamping force and is well suited for through-bolt and clearance-hole applications. Installation requires a 9/16-inch hex wrench or socket. Tradespeople and maintenance technicians working across a range of equipment assembly and repair tasks will find this a reliable, code-compatible fastening solution.
This screw is appropriate for light to medium-duty fastening tasks in residential and commercial trade settings. Common applications include equipment mounting, ductwork support hardware, panel attachment, and general mechanical assembly where UNC-threaded fasteners are specified. The zinc coating provides basic corrosion resistance suitable for indoor or dry environments. Sold individually with a minimum order quantity of 10 units, making it practical for stocking in maintenance and service inventories.
Designed as a standard UNC-threaded hex head cap screw compatible with any application specifying a 3/8-16 partially threaded fastener with a 6-inch grip length.
Installation should be performed by a qualified tradesperson using a calibrated torque wrench and a 9/16-inch socket to achieve proper clamp load without overloading the Grade 2 rating. Ensure mating threads are clean and free of debris before installation. Follow applicable mechanical codes and equipment manufacturer torque specifications for the specific assembly. Do not use in applications requiring Grade 5 or Grade 8 fastener ratings.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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