CAT Series

Plastic End Caps for Product Protection
CAT Series
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Covers All Threads Caps | Plastic Thread Protectors

CAT Series caps, ideal for automated feed systems, are engineered plastic thread protectors that offer the user solid product protection with the flexibility to remove and replace the cap as needed. Designed to protect products with and without o-rings, the clarity of the product allows visibility without removal. PMI offers a variety of sizes to meet your standard, N.P.T. or metric thread protection needs. Their precise fit ensures dependable coverage during storage, transport, and processing. For operations requiring thread cap protectors that integrate smoothly into automated systems, this series provides consistent performance.

Non-threaded applications may also be served with this versatile line of plastic thread caps. The durable construction resists cracking and deformation, maintaining product integrity throughout the supply chain. Whether used to shield fittings, valves, or tubing, CAT Series plastic thread protectors readily meet the demands of industrial environments where efficiency and protection matter most.

For help identifying the right caps for your specifications, reach out through our contact page or call 800.344.7584 to discuss your application with our team.

  • Typical wall thickness: .032
  • Color: Natural
  • Material: Low Density Polyethylene
  • LDPE service temperature: 150° F (66° C)
  • RoHS Compliant
CAT Series product diagram

Product Options

Please confirm that your Part Number is correct and adjust the other selections below to meet your application's requirements.

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Standard Thread

PART NO. COLOR TO CAP
THREAD SIZE		 A B C PRODUCT OPTIONS
in. in. in.
CAT-7/16 Natural 7/16" 0.429 10.897 0.420 10.668 0.684 17.374 Carton 10,000 1 1,000 100 175.00 55.10 19.28
CAT-1/2 Natural 1/2" 0.489 12.421 0.464 11.786 0.743 18.872 Carton 7,000 1 1,000 100 170.80 76.90 26.92
CAT-9/16 Natural 9/16" 0.550 13.970 0.492 12.497 0.801 20.345 Carton 7,500 1 1,000 100 189.75 79.20 27.73
CAT-11/16 Natural 11/16" 0.670 17.018 0.500 12.700 0.940 23.876 Carton 5,000 1 1,000 100 136.50 85.49 29.93
CAT-11/16M Natural 11/16" 0.693 17.602 0.500 12.700 0.930 23.622 Carton 5,000 1 1,000 100 136.48 85.80 30.03
CAT-3/4 Natural 3/4" 0.740 18.796 0.670 17.018 0.987 25.070 Carton 3,500 1 1,000 100 95.55 85.70 29.98
CAT-13/16 Natural 13/16" 0.802 20.371 0.560 14.224 1.060 26.924 Carton 3,500 1 1,000 100 105.00 94.50 33.06
CAT-7/8 Natural 7/8" 0.875 22.225 0.660 16.764 1.120 28.448 Carton 2,500 1 1,000 100 80.25 101.04 35.34
CAT-1 Natural 1" 0.990 25.146 0.660 16.764 1.250 31.750 Carton 3,000 1 500 50 99.30 52.25 18.31
CAT-1-1/16 Natural 1 1/16" 1.052 26.721 0.742 18.847 1.302 33.071 Carton 2,250 1 500 50 96.00 54.90 19.23
CAT-1-3/16 Natural 1 3/16" 1.175 29.845 0.750 19.050 1.440 36.576 Carton 2,000 1 500 50 86.00 67.35 23.58
CAT-1-5/16 Natural 1 5/16" 1.297 32.944 0.747 18.974 1.539 39.091 Carton 1,500 1 500 50 70.20 73.45 25.70
CAT-1-7/16 Natural 1 7/16" 1.426 36.220 0.750 19.050 1.690 42.926 Carton 1,000 1 250 25 60.30 47.48 16.62
CAT-1-5/8 Natural 1 5/8" 1.612 40.945 0.850 21.590 1.880 47.752 Carton 1,000 1 250 25 66.10 52.03 18.21
CAT-1-11/16 Natural 1 11/16" 1.674 42.520 0.850 21.590 1.940 49.276 Carton 800 1 250 25 69.92 68.73 24.06
CAT-1-7/8 Natural 1 7/8" 1.861 47.269 0.970 24.638 2.120 53.848 Carton 500 1 250 25 54.40 85.50 29.92
CAT-2 Natural 2" 1.985 50.419 1.090 27.686 2.250 57.150 Carton 800 1 250 25 99.52 97.80 34.23
CAT-2-1/2 Natural 2 1/2" 2.481 63.017 1.220 30.988 2.750 69.850 Carton 500 1 250 25 67.35 111.22 38.92

N.P.T. Thread

PART NO. COLOR TO CAP
N.P.T. SIZE		 A B C PRODUCT OPTIONS
in. in. in.
CAT-0125 Natural 1/8" 0.398 10.109 0.375 9.525 0.655 16.637 Carton 15,000 1 1,000 100 319.50 67.50 23.59
CAT-0250 Natural 1/4" 0.533 13.538 0.530 13.462 0.805 20.447 Carton 9,000 1 1,000 100 202.50 75.60 24.69
CAT-0375 Natural 3/8" 0.669 16.993 0.525 13.335 0.935 23.749 Carton 5,000 1 1,000 100 125.50 79.20 27.71
CAT-0500 Natural 1/2" 0.830 21.082 0.710 18.034 1.085 27.559 Carton 2,500 1 1,000 100 73.25 92.19 32.27
CAT-0750 Natural 3/4" 1.045 26.543 0.745 18.923 1.315 33.401 Carton 3,000 1 500 100 116.70 61.35 42.88
CAT-1000 Natural 1" 1.300 33.020 0.915 23.241 1.550 39.370 Carton 1,500 1 500 50 66.30 69.55 24.34
CAT-1250 Natural 1 1/4" 1.650 41.910 0.965 24.511 1.950 49.530 Carton 800 1 250 25 55.04 54.15 18.96
CAT-1500 Natural 1 1/2" 1.890 48.006 0.960 24.384 2.175 55.245 Carton 1,000 1 100 10 83.00 26.13 9.15
CAT-2000 Natural 2" 2.355 59.817 1.015 25.781 2.630 66.802 Carton 600 1 100 10 68.28 35.77 12.52

Metric Thread

PART NO. COLOR TO CAP
METRIC SIZE		 A B C PRODUCT OPTIONS
in. in. in.
CAT-10 Natural M10 0.384 9.754 0.323 8.204 0.689 17.501 Carton 7,000 1 1,000 100 166.60 74.90 26.21
CAT-10XL Blue M10 0.382 9.703 0.510 12.954 0.672 17.069 Carton 8,000 1 1,000 100 573.60 97.03 33.96
CAT-12 Natural M12 0.463 11.760 0.470 11.938 0.768 19.507 Carton 7,000 1 1,000 100 172.90 77.70 27.33
CAT-14 Natural M14 0.540 13.716 0.470 11.938 0.846 21.488 Carton 6,000 1 1,000 100 160.20 83.53 29.24
CAT-16 Natural M16 0.617 15.672 0.470 11.938 0.925 23.495 Carton 5,000 1 1,000 100 154.00 96.90 33.93
CAT-18 Natural M18 0.696 17.678 0.470 11.938 1.004 25.502 Carton 5,000 1 1,000 100 170.00 106.71 37.35
CAT-20 Natural M20 0.774 19.660 0.550 13.970 1.080 27.432 Carton 3,000 1 1,000 100 112.80 118.10 42.28
CAT-22 Natural M22 0.855 21.717 0.553 14.046 1.161 29.489 Select Pack 3,000 1 1,000 100 125.40 131.53 46.04
CAT-33 Natural M33 1.285 32.639 0.689 17.501 1.594 40.488 Carton 2,000 1 250 25 142.40 55.93 19.58
CAT-38 Natural M38 1.481 37.617 0.689 17.501 1.791 45.491 Carton 1,000 1 250 25 76.30 60.08 21.03
CAT-42 Natural M42 1.641 41.681 0.689 17.501 1.949 49.505 Carton 1,000 1 250 25 84.80 66.58 23.31

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