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89 3M Logo Mil-129H Symbol Model Number “A” “B” “C” “D” 3M ™ Circular Cover 4270 Product Description Old Prod. Desc. “A” “B” “C” “D” Packaged 100/bag; 10 bags/box 4270 M5501-31A-250 4270-4R .670 .500 .250 .336 4270 M5501…
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For more product information, please visit www.3M.com/static
3M
™
Connector Covers
3M Connector Covers are made of an intrinsically conductive composite
material with uniformly distributed fibers. This makes the covers free of
carbon black particulate and better suited to clean situations. The covers
do not leave black marks and are permanently conductive.
3M
™
Circular Connector Covers
4270 Series
4270 Series were designed to meet the requirements and intentions
of MS90376,and MIL PRF 5501/31A or 32A. Military contractors
have qualified these materials to their own specifications and are
encouraging their use.
3M
™
Circular Connector Covers 4270 Series
Material Properties
Property Test Method Typical Value
Resistivity ASTM D991 <10
5
ohm-cm
Contact Corrosivity
(Kovar plate)
FTMS 101C
Method 3005
Pass
Crayoning 3M Not visible
Elongation ASTM D638 25%
Tensile ASTM D638 1500 PSI (1.0 x 10
7
N/m
2
)
Vicat Softening ASTM MD 1525 205°F (96OC)
Outgassing ASTM E595 Pass
Chemical Reactions
Dilute Acids Slight Attack
Dilute Alkalines Slight Attack
Concentrated Acids Severe Attack
Concentrated Alkalines Severe Attack
Methanol, Ethanol, and Isopropanol Resistant
Hydrocarbons Slight Attack
Ketones Dissolves
Oil and Gasoline Severe Attack
Product No. Description
4270
Feature a unique conductive composite
material. Noncorrosive and produce no visible
corrosion. Connector Covers 4270 Series were
designed to meet the requirements and intentions
of MS90376 and MIL PRF 5501/31A or 32A.
Packaging
89
3M Logo
Mil-129H
Symbol
Model
Number
“A”
“B”
“C”
“D”
3M
™
Circular Cover 4270
Product
Description
Old Prod.
Desc.
“A” “B” “C” “D”
Packaged 100/bag; 10 bags/box
4270 M5501-31A-250 4270-4R .670 .500 .250 .336
4270 M5501/31A-313 4270-5R .670 .500 .313 .399
4270 M5501/31A-375 4270-6R .670 .500 .375 .461
4270 M5501/31A-413 4270-8Y .670 .625 .413 .483
4270 M5501/31A-480 4270-8R .740 .500 .480 .540
4270 M5501/31A-500 4270-9R .750 .500 .500 .586
4270 M5501/31A-530 4270-10Y .750 .625 .530 .595
4270 M5501/31A-605 4270-10R .840 .500 .605 .665
4270 M5501/31A-655 4270-12Y .860 .625 .655 .715
4270 M5501/31A-720 4270-12R .970 .500 .720 .775
4270 M5501/31A-785 4270-14Y 1.031 .625 .785 .845
4270 M5501/31A-850 4270-14R 1.125 .500 .850 .905
4270 M5501/31A-893 4270-16Y 1.125 .625 .893 .963
4270 M5501/31A-973 4270-16R 1.220 .500 .973 1.035
4270 M5501/31A-1028 4270-18Y 1.250 .625 1.028 1.088
4270 M5501/31A-1093 4270-18R 1.330 .562 1.093 1.155
4270 M5501/31A-1125 4270-19R 1.400 .562 1.125 1.213
“D” Type Cover 4272
Product
Description
Old Prod.
Desc.
“A” “B” “C” “D” “E” “F” “G” “H”
Packaged 100/bag; 10 bags/box
4272 M5501-32A-50P 4272-50P 2.112 2.179 2.279 .636 .536 .469 .280 .240
4272 M5501-32A-50S 4272-50S 2.049 2.116 2.216 .574 .474 .407 .280 .240
4272 M5501-32A-37P 4272-37P 2.216 2.283 2.383 .530 .430 .363 .280 .240
4272 M5501-32A-37S 4272-37S 2.143 2.210 2.310 .462 .362 .295 .280 .240
4272 M5501-32A-25P 4272-25P 1.586 1.635 1.735 .530 .430 .363 .280 .240
4272 M5501-32A-25S 4272-25S 1.495 1.562 1.662 .462 .362 .295 .280 .240
4272 M5501-32A-15P 4272-15P 1.040 1.107 1.177 .512 .436 .369 .280 .240
4272 M5501-32A-15S 4272-15S .955 1.022 1.122 .462 .362 .295 .280 .240
4272 M5501-32A-9P 4272-9P .708 .775 .849 .512 .434 .367 .280 .240
4272 M5501-32A-9S 4272-9S .627 .694 .794 .462 .362 .295 .280 .240
Product
Description
Old Prod.
Desc.
“A” “B” “C” “D”
Packaged 50/bag; 10 bags/box
4270 M5501/31A-1150 4270-20Y 1.406 .625 1.150 1.215
4270 M5501/31A-1231 4270-20R 1.465 .562 1.231 1.301
4270 M5501/31A-1270 4270-22Y 1.500 .625 1.270 1.340
4270 M5501/31A-1340 4270-22R 1.590 .562 1.340 1.410
4270 M5501/31A-1390 4270-24Y 1.640 .625 1.390 1.460
4270 M5501/31A-1463 4270-24R 1.700 .562 1.463 1.533
4270 M5501/31A-1540 4270-25Y 1.810 .625 1.540 1.580
4270 M5501/31A-1645 4270-28Y 1.875 .625 1.645 1.718
4270 M5501/31A-1715 4270-28R 1.950 .562 1.715 1.790
Packaged 25/bag; 10 bags/box
4270 M5501/31A-1890 4270-32Y 2.125 .625 1.890 1.970
4270 M5501/31A-1965 4270-32R 2.220 .562 1.965 2.040
4270 M5501/31A-2140 4270-36Y 2.340 .625 2.140 2.210
4270 M5501/31A-2215 4270-36R 2.435 .600 2.215 2.290
4270 M5501/31A-2380 4270-40Y 2.600 .625 2.380 2.450
4270 M5501/31A-2440 4270-40R 2.660 .600 2.440 2.530
4270 M5501/31A-2630 4270-44Y 2.875 .625 2.630 2.700
4270 M5501/31A-2720 4270-44R 2.960 .600 2.720 2.812
4270 M5501/31A-2880 4270-48Y 3.125 .625 2.880 2.950
4270 M5501/31A-2960 4270-48R 3.225 .600 2.960 3.050
Connector Covers
Packaging
90
For more product information, please visit www.3M.com/static
Notes
Packaging