Adams Rite 1871W Series Cylinder Operated Flushbolt - Radius with Weatherstrip Faceplate

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3.00 LBS
Width x Height x Depth:
2.00 (in)


3.00 (in)


9.00 (in)

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Adams Rite 1871W Series Cylinder Operated Flushbolt - Radius w/ Weatherstrip Faceplate

Designed for greater key control, the 1871W Cylinder-Operated Flushbolt prevents accidental locking of the inactive leaf of narrow stile aluminum paired doors. May be installed to lock at threshold or at header.


Designed for use instead of conventional flip-lever operated flushbolts, the 1871W Flush Bolt Lock give building management key control of the inactive leaf of paired narrow stile aluminum doors. Prevents casual locking of the inactive leaf by unauthorized persons. Uses same basic over-center action mechanism as MS® pivoted bolt deadlocks. Recommended for installation at both top and bottom of inactive door with MS1850S MS Deadlock in active door for greatest security. May be installed to lock at threshold or at header.


360° turn of key throws or retracts the hex-section bolt. Key can be removed only when bolt is in a positively locked or unlocked position. Lock accepts any standard 1" [25.4 mm] length, 1-5/32" [29.4 mm] diameter mortise cylinder with MS® cam such as the 4036 Mortise Cylinder, or thumbturn such as the 4066 Thumbturn, available separately. The 1871W Flush Bolt Lock accepts cylinder from either or both sides.


Cylinder Backset

31/32" [24.6 mm] or 1-1/8" [28.6 mm] only.

Cylinder Height

Standard length (cylinder center to retracted bolt tip) is 12" [304.8 mm] with ± 1-1/4" [31.8 mm] adjustment. Please contact us for other lengths available by special order.


The case of the 1871W Flush Bolt Lock is made of steel with a corrosion-resistant plating. Measures 1" x 6" x depth [25.4 mm x 152.4 mm x depth]. Depth varies by backset (see table below).


Stainless steel. Hexagonal 3/8" [9.5 mm] flat to flat, with 11/16" [17.5 mm] throw.


1/2" [12.7 mm] diameter hole in metal threshold or header is suitable. For wood thresholds, 4005 Strike is available separately.


Measures 1" x 6-7/8" [25.4 mm x 174.6 mm]. Available in choice of 313 Dark bronze anodized, 335 Black anodized, 628 Clear anodized.


Click here for our Definitive List of Door Hardware Finishes

Standard Package

Flushlock mechanism boxed with actuator arm attached, rod/bolt assembly unattached. Stainless steel bolt guide, mounting screws, and installation instructions included. Cylinder available separately.

Shipping Weight

1-1/4 lbs [.57 kg].

All measurements are approximate and are provided for informational purposes only. Refer to the product installation instructions

Adams Rite 1871W Flush Bolt Lock Installation


Click here to download Adams Rite 1871W Catalog
Click here to download Adams Rite 1871W Installation Instructions
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