41/2" Institutional Butt Hinge

For use with hollow metal or wood doors in minimum-medium security correctional applicafions: mental institutions, hospitals, government facilities, etc.

 C3 11


1.Corrosion resistance material, Investment cast stainless steel leaves, hinge pins and ball bearings. Hardened tool steel ball races.

2.Hospital Tips and internal cast anti-shear studs.

3.Precision machined to accept self-lubricating, Maintenance free.

4.Type 440C stainless steel ball bearing & RC 58-62, Grade 200.

5.Type 304 free cutting stainless steel pin for Additional wear.

6.Meet NFPA 80 and Ansi 156.1 Grade 1, 3 million cycles, Static Load and salt spray test.

7.Reversible, non-handed.

8.Full and half mortise applications.

9.Flat recess head stainless steel machine screw 12-20 x 1/2".

10.For use on Detention Industry or any application where severe loads from blast pressure wave, seismic event or high wind velocity etc.


Hinge size (inches)

Net weight per piece

Gauge of mat

qty & size of screws

Thrust capacity (Lbs)

Radial capacity (Lbs)

4-1/2 x 4-1/2

1.8 Lbs


8-1/2 x 12-20

500 Lbs

200 Lbs

5 x4-1/2

2.0 Lbs


8-1/2 x 12-20

550 Lbs

220 Lbs