Jergens 44103 T-slot Bolt 1/2-13 Steel Black Finish

Product Description

The JERGENS 44103 is a steel T-slot bolt designed for securing workpieces and fixtures to T-slotted machine tables, jigs, and workholding setups. It features a 1/2-13 UNC thread with a Class 2A fit, a 1 and 1/2 inch thread length, and a 3 inch length under the head. The bolt is manufactured from Grade 4140 steel and carries a black finish for corrosion resistance. The head dimensions - 7/8 inch wide by 5/16 inch tall - are sized to seat and slide within a 1/2 inch T-slot. This fastener is installed by machinists and tooling technicians working with milling machines, surface plates, and modular fixturing systems.

This T-slot bolt is suited for use in machine shop environments where workpieces need to be clamped securely to slotted tables or fixture plates. Typical applications include milling machine table fixturing, modular tooling assemblies, tombstone fixtures, and sub-plate setups. The 1/2-13 UNC thread accepts standard hex nuts, strap clamps, and step blocks used in common workholding configurations. It is intended for use wherever a 1/2 inch T-slot is present and a reliable, positive clamping connection is required.

Key Features

• 1/2-13 UNC thread with Class 2A fit for standard workholding hardware compatibility
• 3 inch length under head provides clearance for varying clamp and strap configurations
• Head sized at 7/8 inch wide and 5/16 inch tall to fit 1/2 inch T-slots
• Grade 4140 steel construction for high tensile strength in demanding clamping applications
• Black finish for added surface protection
• 1 and 1/2 inch thread length accommodates standard nuts and clamping hardware

Compatibility

Designed as a direct-fit replacement or standard component for any fixturing setup using a 1/2 inch T-slot. Compatible with milling machine tables, modular fixture plates, and workholding systems that accept 1/2-13 UNC T-slot fasteners.

Installation Notes

Installation is performed by a machinist or tooling technician. Always power down and lock out the machine before adjusting or installing workholding fasteners on a machine table. Slide the T-slot bolt head into the slot from the end or through a cross slot, then position and tighten with a standard hex nut and wrench to the fixture or clamp manufacturer's specified clamping sequence. Do not overtighten to the point of deforming the T-slot or stripping the thread engagement.