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Malleable Iron

  • Malleable Iron Caps conform to ASTM A197/ASME B16.3.
  • Available in both black and galvanized finishes.
  • Stocked in sizes from 1/8" to 6".
  • All Malleable Iron Caps have female NPT threads.
Five types of Galvanized Malleable Iron Caps ranging in size and black and galvanized finishes Sizes are Nominal Pipe Size (NPS) - size chartTemperature/Pressure cross reference for Malleable Iron Caps
Malleable Iron Caps
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To start, select size. Follow the green box to refine selections as desired. Click “Lookup Product” any time after selecting size to display products matching criteria entered so far. Fields autofill when only one choice. Or use search box above.

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Class for pipe fittings is a standard defined by the ASME/ASTM. Though stated with a # sign, such as 150# or 3000#, it is not a direct pressure rating.  The pressure rating is dependent on material and temperature and is found by consulting an appropriate reference guide.
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Black - standard pipe finish. Galvanized - zinc plated for corrosion resistance.
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Domestic - Made in the USA. Import - Made elsewhere.
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Caps » Malleable Iron
  • Product Name: BMI.125 STD CAP
  • SKU: 105943
  • Weight: .03
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 0.125

Description:
IMPORT BLACK MALLEABLE IRON

FOR 1/8" PIPE(.405 OD) FEMALE THREADS, ASTM A197/ASME B16.3

Price by Quantity:
1 - 9 = $2.16
10 - 49 = $1.98
50 - 99 = $1.80
100 + = $1.44
Quantity:
–
+
We show 100 in stock
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All items ship from Houston, TX.

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Caps » Malleable Iron
  • Product Name: BMI.250 STD CAP
  • SKU: 101107
  • Weight: .06
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 0.25

Description:
IMPORT BLACK MALLEABLE IRON

FOR 1/4" PIPE(.540 OD) FEMALE THREADS, ASTM A197/ASME B16.3

Price by Quantity:
1 - 9 = $2.25
10 - 49 = $2.06
50 - 99 = $1.88
100 + = $1.50
Quantity:
–
+
We show 170 in stock
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All items ship from Houston, TX.

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Caps » Malleable Iron
  • Product Name: BMI.375 STD CAP
  • SKU: 101520
  • Weight: .09
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 0.375

Description:
IMPORT BLACK MALLEABLE IRON

FOR 3/8" PIPE(.675 OD) FEMALE THREADS, ASTM A197/ASME B16.3

Price by Quantity:
1 - 9 = $2.40
10 - 49 = $2.20
50 - 99 = $2.00
100 + = $1.60
Quantity:
–
+
We show 191 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

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Caps » Malleable Iron
  • Product Name: BMI.750 STD CAP
  • SKU: 101723
  • Weight: .22
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 0.75

Description:
IMPORT BLACK MALLEABLE IRON

FOR 3/4" PIPE(1.05 OD) FEMALE THREADS, ASTM A197/ASME B16.3

Price by Quantity:
1 - 9 = $2.25
10 - 49 = $2.06
50 - 99 = $1.88
100 + = $1.50
Quantity:
–
+
We show 4600 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

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Caps » Malleable Iron
  • Product Name: BMI1.00 STD CAP
  • SKU: 101798
  • Weight: .38
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 1.00

Description:
IMPORT BLACK MALLEABLE IRON

FOR 1" PIPE(1.315 OD) FEMALE THREADS, ASTM A197/ASME B16.3

Price by Quantity:
1 - 9 = $3.45
10 - 24 = $3.16
25 - 49 = $2.88
50 + = $2.30
Quantity:
–
+
We show 533 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

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Caps » Malleable Iron
  • Product Name: BMI1.25 STD CAP
  • SKU: 101109
  • Weight: .58
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 1.25

Description:
IMPORT BLACK MALLEABLE IRON

FOR 1-1/4" PIPE(1.66 OD) FEMALE THREADS,ASTM A197/ASME B16.3

Price by Quantity:
1 - 9 = $3.60
10 - 24 = $3.30
25 - 49 = $3.00
50 + = $2.40
Quantity:
–
+
We show 175 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

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Caps » Malleable Iron
  • Product Name: BMI1.50 STD CAP
  • SKU: 101058
  • Weight: .73
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 1.50

Description:
IMPORT BLACK MALLEABLE IRON

FOR 1-1/2" PIPE(1.90 OD) FEMALE THREADS,ASTM A197/ASME B16.3

Price by Quantity:
1 - 9 = $5.13
10 - 24 = $4.70
25 - 49 = $4.36
50 + = $3.42
Quantity:
–
+
We show 879 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

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Caps » Malleable Iron
  • Product Name: BMI2.00 STD CAP
  • SKU: 101743
  • Weight: 1.20
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 2.00

Description:
IMPORT BLACK MALLEABLE IRON

FOR 2" PIPE(2.375 OD) FEMALE THREADS, ASTM A197/ASME B16.3

Price by Quantity:
1 - 9 = $6.27
10 - 24 = $5.75
25 - 49 = $5.33
50 + = $4.18
Quantity:
–
+
We show 214 in stock
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All items ship from Houston, TX.

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Caps » Malleable Iron
  • Product Name: BMI2.50 STD CAP
  • SKU: 105614
  • Weight: 1.75
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 2.50

Description:
IMPORT BLACK MALLEABLE IRON

FOR 2-1/2" PIPE(2.875 OD) FEMALE THREAD,ASTM A197/ASME B16.3

Price by Quantity:
1 - 9 = $16.50
10 - 24 = $15.13
25 - 49 = $13.75
50 + = $11.00
Quantity:
–
+
We show 42 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

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Caps » Malleable Iron
  • Product Name: BMI3.00 STD CAP
  • SKU: 103709
  • Weight: 2.28
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 3.00

Description:
IMPORT BLACK MALLEABLE IRON

FOR 3" PIPE(3.50 OD) FEMALE THREADS, ASTM A197/ASME B16.3

Price by Quantity:
1 - 9 = $15.42
10 - 24 = $13.49
25 - 49 = $11.95
50 + = $10.79
Quantity:
–
+
We show 148 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

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Caps » Malleable Iron
  • Product Name: BMI4.00 STD CAP
  • SKU: 102241
  • Weight: 3.12
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 4.00

Description:
IMPORT BLACK MALLEABLE IRON

FOR 4" PIPE(4.50 OD) FEMALE THREADS, ASTM A197/ASME B16.3

Price by Quantity:
1 - 9 = $25.00
10 - 24 = $21.88
25 - 49 = $19.38
50 + = $17.50
Quantity:
–
+
We show 108 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

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Caps » Malleable Iron
  • Product Name: BMI5.00 STD CAP
  • SKU: 103191
  • Weight: 7.00
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 5.00

Description:
IMPORT BLACK MALLEABLE IRON

FOR 5" PIPE(5.563 OD) FEMALE THREADS, ASTM A197/ASME B16.3

Price by Quantity:
1 - 4 = $50.40
5 - 9 = $46.20
10 - 24 = $43.40
25 + = $39.20
Quantity:
–
+
We show 14 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

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Caps » Malleable Iron
  • Product Name: BMI6.00 STD CAP
  • SKU: 105376
  • Weight: 8.85
  • Class: 150#
  • Finish: Black
  • Origin: Import
  • Size: 6.00

Description:
IMPORT BLACK MALLEABLE IRON

FOR 6" PIPE(6.625 OD) FEMALE THREADS, ASTM A197/ASME B16.3

Price by Quantity:
1 - 4 = $103.40
5 - 9 = $90.48
10 - 24 = $80.14
25 + = $74.97
Quantity:
–
+
We show 39 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

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Caps » Malleable Iron
  • Product Name: GMI.125 STD CAP
  • SKU: 102165
  • Weight: .04
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 0.125

Description:
IMPORT GALV MALLEABLE IRON

FOR 1/8" PIPE(.405 OD) FEMALE THREADS, ASTM A153/ASME B16.3

Price by Quantity:
1 - 9 = $2.64
10 - 49 = $2.42
50 - 99 = $2.20
100 + = $1.76
Quantity:
–
+
We show 164 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

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Caps » Malleable Iron
  • Product Name: GMI.250 STD CAP
  • SKU: 100899
  • Weight: .25
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 0.25

Description:
IMPORT GALV MALLEABLE IRON

FOR 1/4" PIPE(.540 OD) FEMALE THREADS, ASTM A153/ASME B16.3

Price by Quantity:
1 - 9 = $3.00
10 - 49 = $2.75
50 - 99 = $2.55
100 + = $2.00
Quantity:
–
+
We show 100 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

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Caps » Malleable Iron
  • Product Name: GMI.375 STD CAP
  • SKU: 101450
  • Weight: .10
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 0.375

Description:
IMPORT GALV MALLEABLE IRON

FOR 3/8" PIPE(.675 OD) FEMALE THREADS, ASTM A153/ASME B16.3

Price by Quantity:
1 - 9 = $2.91
10 - 49 = $2.67
50 - 99 = $2.43
100 + = $1.94
Quantity:
–
+
We show 102 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

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Caps » Malleable Iron
  • Product Name: GMI.500 STD CAP
  • SKU: 107780
  • Weight: .12
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 0.50

Description:
IMPORT GALV MALLEABLE IRON

FOR 1/2" PIPE(.840 OD) FEMALE THREADS, ASTM A153/ASME B16.3

Price by Quantity:
1 - 9 = $2.10
10 - 49 = $1.93
50 - 99 = $1.79
100 + = $1.40
Quantity:
–
+
We show 129 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

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Caps » Malleable Iron
  • Product Name: GMI.750 STD CAP
  • SKU: 107888
  • Weight: .20
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 0.75

Description:
IMPORT GALV MALLEABLE IRON

FOR 3/4" PIPE(1.05 OD) FEMALE THREADS, ASTM A153/ASME B16.3

Price by Quantity:
1 - 9 = $3.03
10 - 49 = $2.78
50 - 99 = $2.58
100 + = $2.02
Quantity:
–
+
We show 173 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

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Caps » Malleable Iron
  • Product Name: GMI1.25 STD CAP
  • SKU: 107965
  • Weight: .58
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 1.25

Description:
IMPORT GALV MALLEABLE IRON

FOR 1-1/4" PIPE(1.66 OD) FEMALE THREADS, ASTM A153/ASME B16.

Price by Quantity:
1 - 9 = $4.80
10 - 49 = $4.40
50 - 99 = $4.08
100 + = $3.20
Quantity:
–
+
We show 120 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

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Caps » Malleable Iron
  • Product Name: GMI2.00 STD CAP
  • SKU: 105586
  • Weight: .87
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 2.00

Description:
IMPORT GALV MALLEABLE IRON

FOR 2" PIPE(2.375 OD) FEMALE THREADS, ASTM A153/ASME B16.3

Price by Quantity:
1 - 9 = $9.15
10 - 24 = $8.39
25 - 49 = $7.78
50 + = $6.10
Quantity:
–
+
We show 124 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

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Caps » Malleable Iron
  • Product Name: GMI2.50 STD CAP
  • SKU: 109838
  • Weight: 1.80
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 2.50

Description:
IMPORT GALV MALLEABLE IRON

FOR 2-1/2 PIPE(2.875 OD) FEMALE THREADS,ASTM A153/ASME B16.3

Price by Quantity:
1 - 9 = $24.63
10 - 24 = $22.58
25 - 49 = $20.53
50 + = $16.42
Quantity:
–
+
We show 26 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

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Caps » Malleable Iron
  • Product Name: GMI3.00 STD CAP
  • SKU: 104863
  • Weight: 2.75
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 3.00

Description:
IMPORT GALV MALLEABLE IRON

FOR 3" PIPE(3.50 OD) FEMALE THREADS, ASTM A153/ASME B16.3

Price by Quantity:
1 - 9 = $19.86
10 - 24 = $17.38
25 - 49 = $16.38
50 + = $15.39
Quantity:
–
+
We show 123 in stock
cart-icon

To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

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Caps » Malleable Iron
  • Product Name: GMI4.00 STD CAP
  • SKU: 107579
  • Weight: 4.61
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 4.00

Description:
IMPORT GALV MALLEABLE IRON

FOR 4 PIPE(4.50 OD) FEMALE THREADS, ASTM A153/ASME B16.3

Price by Quantity:
1 - 9 = $44.00
10 - 24 = $38.50
25 - 30 = $36.30
31 + = $34.10
Quantity:
–
+
We show 107 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.

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Caps » Malleable Iron
  • Product Name: GMI6.00 STD CAP
  • SKU: 106522
  • Weight: 9.98
  • Class: 150#
  • Finish: Galvanized
  • Origin: Import
  • Size: 6.00

Description:
IMPORT GALV MALLEABLE IRON

FOR 6 PIPE(6.625 OD) FEMALE THREADS, ASTM A153/ASME B16.3

Price by Quantity:
1 - 4 = $154.50
5 - 9 = $135.19
10 - 24 = $127.46
25 + = $119.74
Quantity:
–
+
We show 13 in stock
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To estimate shipping please add to cart, click checkout and enter your zipcode on the left.
All items ship from Houston, TX.