U20

U20-Moon Shape Silver Turn Button Clip

Moon Shape Silver Turn Button Clip 33.5mm crescent 2-hole 0.4mm steel U20

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Category: Picture Framing Hardware / Turn Buttons / Retainer Clips
MOQ: 100
Lead time: 7-10days

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Description

Moon Shape Silver Turn Button Clip – U20 Complete Guide

The Moon Shape Silver Turn Button Clip (SKU: U20) is XKY Framing’s specialist fastener for curved picture frames. Its crescent profile with two 2.5 mm mounting holes spans 33.5 mm and is engineered to follow the inner contour of round, oval, and arched mouldings, providing a flush, gap-free backing lock that flat clips cannot achieve.

Why Choose the Moon Shape Silver Turn Button Clip?

Round and oval frames have curved rabbets that standard flat clips cannot bridge effectively. The U20 Moon Shape Silver Turn Button Clip follows this curve naturally, distributing holding force evenly along the arc and preventing the backing board from bowing or lifting at any point around the circumference.

Key Dimensions

Total length (span): 33.5 mm. Span width: 22 mm. Tail width: 2.5 mm. Hole diameter: 2.5 mm × 2. Thickness: 0.4 mm. Inner radius: approx. 21 mm.

Installation

Position the Moon Shape Silver Turn Button Clip with the crescent inner edge against the backing board. Fasten both holes with 2.5 mm screws or brads. Rotate 45° to lock. Use 6–8 clips evenly spaced around a round frame’s circumference.

FAQ

Q: Why does U20 have two holes?
A: Two holes fix both ends of the crescent span, locking the backing across the full curve.

Q: What is the inner radius?
A: Approximately 21 mm — suited to round frames 42 mm diameter or larger.

Q: Can U20 be used on rectangular frames?
A: Not recommended; it is specifically engineered for curved frame profiles.

Specifications

SKU	U20
Product Type	hardware
MOQ	100
Lead Time	7-10days
Overview	<p>The U20 Moon Shape Silver Turn Button Clip is a crescent-shaped fastener with two mounting holes (2.5 mm each) spanning 33.5 mm. Its curved profile is specifically designed to conform to the inner edge of round, oval, or arched picture frames.</p>
Highlights	Crescent 2-Hole Lock
Custom Packaging	Yes
Material	Metal (Steel)
Color	Silver
Total Length	33.5 mm
Width (Head/Span)	22 mm
Width (Tail)	2.5 mm
Hole Diameter	2.5 mm (×2 holes)
Thickness	0.4 mm
Arch Height	21 mm inner radius
Size Grade	Standard
Shape	Crescent / Moon (???)

Key specs
—	11

FAQ

Why does U20 have two holes?

The two 2.5 mm holes allow the crescent clip to be fixed at both ends of its span, ensuring the backing board is locked across the full curve of a round or oval frame.

What is the inner radius of U20?

The inner radius is approximately 21 mm, designed to match round frames with a diameter of 42 mm or larger.

Can U20 be used on rectangular frames?

Not recommended. The crescent shape is specifically engineered for curved frame profiles. For rectangular frames, use U01–U18.