Springfield 1640403 Spring-Lock Fixed Height Post, 15.5 Inch Stainless Steel Boat Seat Post

The Springfield 1640403 Spring-Lock Fixed Height Post is a 15.5 inch stainless steel post designed to raise and secure a boat seat within a compatible pedestal system. It uses a spring-lock mechanism to hold the seat firmly in place at a fixed height, giving boaters a stable, rattle-free seating position while underway. The post is machined from stainless steel for corrosion resistance in a marine environment and finished in silver to match common pedestal hardware.

With a post diameter of 1.77 inches, this Springfield post is interchangeable with other pedestal systems built around the same 1.77 inch post size, making it a convenient option for replacing a worn or damaged post or for building out a new pedestal seating setup. It ships as a single 15.5 inch post, ready to drop into a compatible pedestal base and seat mount.

This is a genuine Springfield part carrying the manufacturer part number 1640403, so buyers can confirm compatibility with their existing Springfield pedestal hardware or any other pedestal accepting a 1.77 inch post before ordering.

Specifications

• Brand: Springfield
• Manufacturer Part Number: 1640403
• Type: Spring-Lock Fixed Height Post
• Post Length: 15.5 inches
• Post Diameter: 1.77 inches
• Material: Stainless Steel
• Color/Finish: Silver
• Weight: 1.7 pounds
• Package Length: 20 inches
• Package Width: 3.5 inches
• Package Height: 2.25 inches
• UPC: 038132452039
• Fit Type: Universal Fit

Frequently Asked Questions

How long is the Springfield 1640403 spring-lock post? The post measures 15.5 inches, referred to as the 15-1/2 inch length in Springfield's spring-lock post lineup under part number 1640403.

What post diameter does this Springfield post use? It has a 1.77 inch post diameter, which makes the 1640403 interchangeable with other pedestal systems built around that same 1.77 inch post size.

Is this a fixed height post or an adjustable one? The 1640403 is a fixed height post that uses a spring-lock mechanism to hold the seat at a set height, rather than a height-adjustable design.

What material is the Springfield 1640403 post made from? It is made from stainless steel, chosen for corrosion resistance in marine conditions and a lasting finish.

What color is this seat post? The Springfield 1640403 post has a silver finish.

How much does this post weigh? The Springfield 1640403 spring-lock post weighs 1.7 pounds.

Will this post fit my existing boat seat pedestal? Yes, as long as your pedestal system accepts a 1.77 inch diameter post; the Springfield 1640403 is designed to interchange with pedestals using that post size.

What is included when I order part number 1640403? You receive one Springfield spring-lock fixed height post measuring 15.5 inches; the seat and pedestal base are ordered separately.

Is the Springfield 1640403 a genuine Springfield part? Yes, it is a genuine Springfield component identified by manufacturer part number 1640403.

How does the spring-lock mechanism work on this post? The spring-lock mechanism engages to hold the post at its fixed height within the pedestal, keeping the seat secure and stable while the boat is underway.