Standard-Inch

Tight Tolerance Smooth Head Shoulder Screws are also known as Smooth Head Screws and Precision Grade Shoulder Screws. Smooth Head screws are used as fasteners joining two pieces of an assembly where maintaining alignment is critical. These screws have an unthreaded shoulder made with an undersized tolerance to fit bearings, linear motion bushings, and other precision components. Some product applications are: imaging equipment, surgical tools, measuring devices, laboratory instruments, enclosures, and optical fixtures. Screws are machined with hex socket, slotted and 6-lobe drives on precise unmarked smooth heads, with an undercut portion between the thread and shoulder to allow a close fit. The shoulder diameter tolerance is held to +0 to -.001 inches and the shoulder length tolerance is +.002 to -0 inches. Tight tolerance screws have a Class 2A thread fit for inch.


Hex Drive

Hex Drive

Tight Tolerance Smooth Head Shoulder Screws are machined with HEX SOCKET DRIVES on precise unmarked smooth heads, with an undercut portion between the thread and shoulder to allow a close fit.
Slotted Drive

Slotted Drive

Tight Tolerance Smooth Head Shoulder Screws are machined with SLOTTED DRIVES on precise unmarked smooth heads, with an undercut portion between the thread and shoulder to allow a close fit.
6 Lobe Drive

6 Lobe Drive

Tight Tolerance Smooth Head Shoulder Screws are machined with 6-LOBE DRIVES on precise unmarked smooth heads, with an undercut portion between the thread and shoulder to allow a close fit.

APEX FASTENERS, Inc - 15858 Business Center Drive - Irwindale, CA 91706 USA
APEX Fasteners supplies standard and custom screws, nut retainers, shoulder screws, plastites and taptites, all types of rivets, spring steel fasteners and special stampings, sems screws in standard, fractional or metric to electronics, aviation and other OEM industries worldwide. ApexFasteners.com custom manufactures screw machine components for electronic enclosure hardware as well as cold forming and cold headed specials for assembly and production requirements.
Tel: (626) 962-2219 - Fax: (626) 962-7729 - info@apexfasteners.com
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