Norpin Standard Cover Specifications

Standard Catalog Enclosures are plain and without surface finishes.

Any enclosure height within the range of Minimum & Maximum Height listed below is available without additonal modifications.

Additional modification services, surface finishes & materials are available upon request.

Standard Covers & LidsSpecifications
NORPIN PART NUMBERILT310.5-328.5A-XXX
OUTER WIDTH - W3.327 in
84.5058 mm
OUTER LENGTH - L3.890 in
98.806 mm
MINIMUM HEIGHT - H0.250 in
6.35 mm
MAXIMUM HEIGHT - H0.500 in
12.7 mm
BOTTOM RADIUS- BR
*Inside Dimension		0.032 in
0.8128 mm
SIDE RADIUS - SR
*Inside Dimension		0.312 in
7.9248 mm
MATERIAL THICKNESS - T0.040 in
1.016 mm
STANDARD TOLERANCES - W, L & H±0.015 in
±0.381 mm
AVAILABLE MATERIALS
*Additional Thicknesses Available
  • Aluminum
  • Brass
  • Copper
  • Cold Rolled Steel
  • Stainless Steel
  • Other materials available upon request.
COVER/LID TYPES
  • OLT - Outside Lid Tight
  • OLL - Outside Lid Loose
  • OLG - Outside Gasketed Lid
  • ILL - Inside Lid Loose
  • ILT - Inside Lid Tight
VALUE ADDED SERVICES AVAILABLE
  • CNC Machining
  • Punching
  • Hardware & Flange Installation
  • Full Line of Surface Finishes Available
  • Additional Precision Fabricated Parts
  • Tooling at little to no cost
  • Welding & Brazing
  • Annealing & Heat Treating
  • Abrasive Blasting & Bead Blasting
  • Fluorescent Penetrant Inspection
SURFACE FINISHING SERVICES
  • Chromic Anodize Type 1
  • Sulfuric Anodize Type 2
  • Hardcoat Anodize Type 3
  • Conversion Coatings
  • Brush Cadmium Plate
  • Chromate of Magnesium
  • Nickel Plate(Sulfamate)
  • Nickel Cadmium Plate
  • Silver Plate
  • Zinc Plating
  • Tin Plate (Bright)
  • Cadmium Plate
  • Passivation
  • Copper
  • Paint & Primers
  • Powder Coating
  • Silk Screening
  • Laser Etching