Templates: 4B45 | 4B50 | 4B60 | 4B80

4C81 – Three Knuckle Concealed Plain Bearing Hinge

Heavy Weight:
4.5″ x 4.0″
4.5″ x 4.5″
5.0″ x 4.0″
5.0″ x 4.5″
5.0″ x 5.0″
6.0″ x 4.5″
6.0″ x 5.0″
6.0″ x 6.0″
8.0″ x 6.0″
8.0″ x 8.0″

PBB, Inc. template hinges are manufactured to close tolerances and meet all specifications and requirements set by the American National Standards Institute (ANSI).

HINGE SWAGING: A standard swaging of our standard weight full mortise hinge when closed to parallel position provides a 1/16” clearance between leaves.

4C81 – 4.5″ x 4.0″ / 4.5″ x 4.5″ / 5.0″ x 4.0″ / 5.0″ x 4.5″ / 5.0″ x 5.0″

  • For heavy weight doors receiving high frequency service.
  • Concealed bearing for trouble free long life application.
  • Hole in bottom tip for easy pin removal.
  • Ball bearing hinges must be used on doors in conjunction with door closers and on all fire rated openings.
  • For hospital type, add HT to suffix of part number.
  • Non-rising removable pin.
  • Attractive slim barrel with flush pins and plugs.
  • All hinges are ANSI template.

4C81 -6.0″ x 4.5″ / 6.0″ x 5.0″ / 6.0″ x 6.0″ / 8.0″ x 6.0″ / 8.0″ x 8.0″

  • Recommended for over 3’4” width doors and having a thickness of 2” or more.
  • For heavy weight doors receiving high frequency service.
  • Ball bearing hinges must be used on doors in conjunction with door closers and on all fire rated openings.
  • For hospital type, add HT to suffix of part number.
  • All hinges are ANSI template.

4C81: Available Materials

4C81 (ANSI A8111)
Steel-Polished and Plated or Bonderized and Prime Coated for Painting

4C21 (ANSI A2111)
Brass-Polished and Plated

4C51 (ANSI A5111)
Stainless Steel-Polished and Satin Finish

4C81 – 4.5″ x 4.0″ or 4.5″ x 4.5″: Product Specifications

MATERIAL GAUGE:
.180 ± .005 for 4-1/2” x 4”
.180 ± .005 for 4-1/2” x 4-1/2”
HEIGHT:
4.50 (+.000/-.015) for 4-1/2” x 4”
4.50 (+.000/-.015) for 4 1/2” x 4-1/2”
WIDTH:
4.00 ± .015 for 4-1/2” x 4”
4.50 ± .015 for 4-1/2” x 4-1/2”
4.5” STANDARD SCREW SIZE
FHMS – 12-24 x 1/2”
FHWS – 12 x 1-1/4”

PACKAGING INFORMATION:
One hinge per plastic bag, 3 hinges and 1 screw pack per unit carton.
16 unit carton or 48 hinges per master shipping carton.
1 screw pack includes all machine screws (24), and 1/2 wood screws (12). ATMS & AWS also available.

4C81 – 5.0″ x 4.0″ / 5.0″ x 4.5″ / 5.0″ x 5.0″: Product Specifications

MATERIAL GAUGE:
.190 ± .005 for 5” x 4”
.190 ± .005 for 5” x 4-1/2”
.190 ± .005 for 5” x 5”
HEIGHT OF HINGE:
5.00 (+.000/-.015) for 5” x 4”
5.00 (+.000/-.015) for 5” x 4-1/2”
5.00 (+.000/-.015) for 5” x 5”
WIDTH:
4.00 ± .015 for 5” x 4”
4.50 ± .015 for 5” x 4-1/2”
5.00 ± .015 for 5” x 5”
5” STANDARD SCREW SIZE
FHMS – 12-24 x 1/2”
FHWS – 12 x 1-1/4”

PACKAGING INFORMATION:
One hinge per plastic bag, 3 hinges and 1 screw pack per unit carton.
12 unit carton or 36 hinges per master shipping carton.
1 screw pack includes all machine screws (24), and 1/2 wood screws (12). ATMS & AWS also available.

4C81 – 6.0″ x 4.5″ / 6.0″ x 5.0″ / 6.0″ x 6.0″: Product Specifications

MATERIAL GAUGE:
.200 ± .005 for 6” x 4-1/2”
.200 ± .005 for 6” x 5”
.200 ± .005 for 6” x 6”
HEIGHT OF HINGE:
6.00 (+.000/-.015) for 6” x 4-1/2”
6.00 (+.000/-.015) for 6” x 5”
6.00 (+.000/-.015) for 6” x 6”
WIDTH:
4.50 ± .015 for 6” x 4-1/2”
5.00 ± .015 for 6” x 5”
6.00 ± .015 for 6” x 6”
6” STANDARD SCREW SIZE
FHMS – 1/4-20 x 1/2”
FHWS – 14 x 1-1/2”

PACKAGING INFORMATION:
One hinge per plastic bag, 3 hinges and 1 screw pack per unit carton.
4 unit carton or 12 hinges per master shipping carton.
1 screw pack includes all machine screws (30), and 1/2 wood screws (15). ATMS & AWS also available.

4C81 – 8.0″ x 6.0″ or 8.0″ x 8.0″: Product Specifications

MATERIAL GAUGE:
.200 ± .005 for 8” x 6”
.200 ± .005 for 8” x 8”
HEIGHT OF HINGE:
8.00 (+.000/-.015) for 8” x 6”
8.00 (+.000/-.015) for 8” x 8”
WIDTH:
6.00 ± .015 for 8” x 6”
8.00 ± .015 for 8” x 8”
8” STANDARD SCREW SIZE
FHMS – 1/4-20 x 1/2”
FHWS – 14 x 1-1/2”

PACKAGING INFORMATION:
One hinge per plastic bag, 3 hinges and 1 screw pack per unit carton.
2 unit carton or 6 hinges per master shipping carton.
1 screw pack includes all machine screws (48), and 1/2 wood screws (24). ATMS & AWS also available.