TMC 1911 Mainspring Housing Pin – Blued – 5 Pack

1911 Mainspring Housing Pin – Carbon Steel – 5 Pack – Blued

Upgrade or maintain your 1911 pistol with this 5‑pack of Mainspring Housing Pin, designed for exceptional durability, reliable performance, and long service life. Each pin is manufactured from high-grade carbon steel and machined to exact specifications, ensuring a precise fit for all standard 1911 frames. Consequently, your pistol gains consistent retention, smooth operation, and dependable alignment. Moreover, by replacing worn factory pins with these precision pins, you prevent loose fit, misalignment, and performance issues before they affect your firearm’s function.

Over time, factory pins inevitably wear, loosen, or bend. As a result, mainspring housing alignment and engagement can suffer, which ultimately reduces reliability and trigger consistency. However, these precision-engineered pins address those problems directly. Therefore, your 1911 maintains proper function and smooth operation, whether in duty use, competition, or daily handling.

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Precision Swiss CNC Manufacturing

Consistent Accuracy from Start to Finish

First, each mainspring housing pin is produced on high-end Swiss CNC screw machines. This ensures precise dimensional control and clean machining, so every pin delivers predictable performance. In addition, CNC manufacturing allows for repeatable accuracy, meaning that each pin fits perfectly without modification.

Next, each pin is centerless ground to refine the diameter, which further improves smooth installation and consistent alignment. Consequently, every mainspring housing pin seats easily and functions reliably for long-term performance.

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Heat Treated and Hardened

Strength Built for Heavy Use

Following machining and grinding, every pin undergoes heat treatment and hardening. As a result, structural strength increases significantly, while resistance to bending, wear, and deformation improves. Consequently, these pins maintain their shape and function even under repeated recoil or extended usage.

Furthermore, because of this hardened construction, the mainspring housing pins provide dependable retention, stable alignment, and long-term durability in both duty and competition 1911 pistols.

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Durable Black Oxide Finish

Corrosion Protection and Professional Look

In addition to its hardened steel construction, each pin features a black oxide finish. This finish protects against moisture, corrosion, and abrasion, while also providing a clean, professional, and factory-correct appearance. Therefore, your pins maintain both functionality and aesthetics, even after extended use or heavy handling.

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Key Features and Benefits

• Five-pack of carbon steel mainspring housing pins

• Manufactured from high-grade carbon tool steel

• Swiss CNC machined for precise dimensions and consistency

• Centerless ground for smooth insertion and perfect alignment

• Heat treated and hardened for maximum strength and durability

• Protective black oxide finish for corrosion resistance

• Maintains proper mainspring housing alignment

• Built for long-term service life

• Ready for immediate installation

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Compatibility

Fitment Overview

These mainspring housing pins meet or exceed 1911 mil-spec standards. Accordingly, they fit nearly all 1911 manufacturers and models, including:

• Government

• Commander

• Officer and Compact

Because of their precise dimensions and quality manufacturing, no fitting is required. Simply install and secure for reliable performance.

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Ideal Applications

Where This Pin Set Excels

This 5-pack is ideal for gunsmiths, builders, and enthusiasts who work with multiple pistols. As a result, it is especially effective for:

• Custom 1911 builds and complete assemblies

• Routine maintenance and preventive upgrades

• Replacement of worn or damaged factory pins

• Multi-firearm servicing and parts kits

• Long-term reliability improvements

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Summary

Ultimately, the 1911 Mainspring Housing Pin – Carbon Steel – 5 Pack – Blued provides consistent performance, precise fit, and long-term durability. Thanks to Swiss CNC precision, hardened steel construction, and a protective black oxide finish, these pins restore proper mainspring housing alignment and smooth operation.

In short, this small component has a big impact. By installing these pins, your 1911 pistols remain reliable, properly aligned, and ready for duty, competition, or daily use.