T-Handle Locking Pin, 304 Stainless Steel

Fit and sizing

When a connection needs to come apart often, a conventional pin can be slow to remove—or easy to misplace once it’s out. This T-handle quick-release pin uses a push button to retract the locking balls, then releases them again when the pin is seated. A safety rope helps keep it close to the equipment between uses.

The listed pin diameter is 0.31 in (8 mm), with a usage length of 3.15 in (80 mm). Check those dimensions against the receiving hole and the space available around it before choosing, the listing does not specify hole tolerances or a load rating. The product name also gives a size of 5/16 in x 3-5/32 in, so compare the actual fit requirements of your setup rather than relying on the name alone.

Pros

The button-operated release is intended for connections that need frequent locking, adjustment, or removal. Press the handle button to retract the steel balls, pass the pin through the aligned holes, and release the button so the balls extend. That simple sequence may be useful when adjusting a piece of sports or stage equipment between setups, instead of repeatedly handling a separate fastener.

The pin body is 304 stainless steel, while the handle is black-finished aluminum alloy. The design also uses two steel balls for retention and includes a safety rope to reduce the chance of losing the pin when it’s removed. What matters most here: does the mechanism match the way you’ll use the connection? If the pin will be removed and reinserted regularly, quick release is the main practical advantage over a basic fixed fastener.

Spec sheet

• Type: T-handle push-button locking quick-release pin
• Material: 304 stainless steel pin body, aluminum alloy handle
• Diameter: 0.31 in / 8 mm
• Usage length: 3.15 in / 80 mm
• Total length: 4.51 in / 114.5 mm
• Widest point: 1.76 in / 44.6 mm
• Retention: Double steel balls, safety rope included

The listed dimensions help narrow down fit, but on the spec sheet there’s no stated load capacity, pin-hole tolerance, or application-specific certification. Don’t assume it’s suitable for a safety-critical or heavily loaded connection without confirming those requirements independently.

When it makes sense

It’s a great fit if you need a reusable pin for repeated connections in equipment such as stage or exhibition setups, sports equipment, medical equipment, automation equipment, auto parts, or lighting equipment—and the dimensions match your assembly. Its quick-release mechanism favors convenience during frequent adjustments, a permanent fastener or a specifically load-rated connector may be more appropriate when the connection is rarely changed or its load requirements are demanding.

Better avoided if you can’t verify the hole size and required engagement length, or if your application depends on a load rating that isn’t provided here. The safety rope helps keep the pin from being misplaced, but it doesn’t establish that the connection itself is secure for every use. Buy it for a compatible, frequently handled connection, not as a substitute for a connector with documented performance requirements.