AN901 REV. 10
TABLE I. Gasket Dash Numbers and Dimensions
ØA
ØB
DASH NUMBER
TUBING
+.010
+.000
OD
-.000
-.010
ALUMINUM
COPPER
4A
4C
.250
.443
.683
5A
5C
.313
.505
.745
6A
6C
.375
.568
.808
8A
8C
.500
.755
.995
10A
10C
.625
.880
1.120
12A
12C
.750
1.068
1.370
16A
16C
1
1.318
1.620
20A
20C
1.250
1.630
1.870
24A
24C
1.500
1.880
2.120
28A
28C
1.750
2.255
2.495
32A
32C
2
2.505
2.745
NOTES:
1. Material: Aluminum, specification ASTM B209, Alloy 1100, temper H14.
Copper, specification ASTM B152/B152M Standard O60 cold rolled, soft annealed.
2. Finish: Copper, cadmium plate, specification SAE AMS-QQ-P-416, type II, class 3.
3. Color: Copper, yellow.
4. Heat treatment: Copper gaskets shall be annealed after fabrication and prior to plating.
5. Surfaces shall be smooth, flat and free from nicks and scratches.
6. Examples of part numbers: AN901-4A = Aluminum gasket for 1/4 OD tubing.
AN901-4C = copper gasket for 1/4 OD tubing.
7. Break all sharp edges and remove all hanging burrs and slivers which might become
dislodged under usage.
8. Dimensions in inches.
9. Changes from previous issue. The margins of this specification are marked with vertical lines
to indicate where changes from the previous issue were made. This was done as a convenience
only and the Government assumes no liability whatsoever for any inaccuracies in these
notations. Bidders and contractors are cautioned to evaluate the requirements of this document
based on the entire content irrespective of the marginal notations and relationship to the last
previous issue.
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