About this item
The S. Parker 2029 TH7 is a 7-inch single action non-template spring hinge with a patented tamper-resistant cap, sold as a pair in prime coat finish. It's the larger sibling of the 2029 TH6 in the same series, built to the same New York City Housing Authority (NYCHA) specifications but sized for heavier or taller door leaves where a 6-inch hinge won't provide enough spring torque to reliably close the door. If you've been searching "single action spring hinge" or "single action hinge" and need the 7-inch size for a larger commercial door, this is it. The "2029+7" search format some contractors use is the same product - the 2029 series in the 7-inch TH size.
Why 7 Inches Instead of 6
Spring hinge sizing is about door weight and height, not just visual proportion. A 6-inch spring hinge provides a certain closing force through its spring mechanism. On heavier doors - steel hollow metal doors, solid core wood doors with heavier hardware, or particularly tall door leaves - that closing force isn't always enough to pull the door reliably to the latching point. The 7-inch 2029 TH7 delivers more spring force through its larger barrel and spring assembly, handling the closer-to-door-stop pressure that heavier slabs need to seal properly.
The standard rule of thumb in commercial hardware is 6-inch spring hinges for lighter to medium-weight interior doors, and 7-inch for heavier hollow metal or solid core applications where closing resistance is higher. If your doors are sticking at 80 or 85 percent closed rather than pulling fully latched, undersized spring hinge force is usually why.
The Non-Removable Cap: What NYCHA Requires
The defining feature of the 2029 series is the patented non-removable top cap. On a standard spring hinge, the cap can be removed to access the spring - and in residential housing authority buildings, that's exactly what happens. Residents remove the spring mechanism from fire corridor and apartment unit doors, defeating the self-closing function that building and fire codes require.
The 2029 TH7 solves this directly. The top cap is constructed so it can't be removed without destroying the hinge entirely. The spring stays in. The door keeps self-closing. This is the feature that makes the 2029 series the specification choice for NYCHA contracts, Section 8 renovations, multi-family housing authority projects, and any residential project where tamper resistance on fire doors is part of the specification.
Single Action vs Double Action
The 2029 TH7 is a single action spring hinge - it closes in one direction only. The door swings one way and the spring mechanism pulls it back closed. This is the correct type for apartment unit doors, corridor doors, stairwell access doors, and any standard commercial opening where the door only swings one direction. Double action spring hinges swing both directions and are a different product entirely. If your door swings in both directions, you need S. Parker's 070 series double action hinges, not the 2029.
Non-Template Installation
The TH designation means this is a non-template hinge - it doesn't require a specific mortised template cutout in the door edge or frame for installation. It mounts using machine screws through the door leaf and frame face without a precision hinge prep. All machine screws are included in the pair packaging. The prime coat finish ships ready to paint, matching any standard door finish the project calls for.
Specifications
Model: S. Parker 2029 TH7
Series: 2029 Single Action Spring Hinge Series
Size: 7"
Action: Single action (one-direction swing, self-closing)
Type: Non-template (no mortise cutout required)
Cap: Patented non-removable top cap, tamper-resistant
Finish: Prime coat (paint ready)
Quantity: Pair (2 hinges)
Fasteners: All machine screws included
Compliance: Meets NYC Housing Authority (NYCHA) specifications
Related: 2029 TH6 (6-inch version), 2029-TP tension pins (box of 100, sold separately)
American Locksets has stocked S. Parker spring hinges and the full 2029 series since 2001.
Trusted Since 2001
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