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MS20758 REV B

DETAIL SPECIFICATION SHEET

ELBOW, HOSE, FLANGED SWIVEL, 45 DEGREE

This specification is approved for use by all Departments and Agencies of the Department of Defense.

The requirements for acquiring the product described herein shall consist of this specification sheet.

MS20758 45 Degree Flanged Swivel Hose Elbow Diagram
Inches mm
.005 0.13
.010 0.25
.030 0.76
.062 1.57
.125 3.18

See notes at end of figure.

FIGURE 1. Hose to swivel flange dimensions and configurations.

AMSC N/A FSC 4730
Size code number Hose ID inch (mm) A dia. ±.003 (0.08) (see note 7) inch (mm) B +.047 (1.19) -.000 inch (mm) C +.047 (1.19) -.000 inch (mm) D dia. +.000 -.015 (0.38) (see note 7)
12 .750 (19.05) .609 (15.47) .812 (20.62) 1.812 (46.02) .938 (23.83)
12-16
16 1.000 (25.40) .844 (21.44) .875 (22.23) 1.875 (47.63) 1.188 (30.18)
20 1.250 (31.75) 1.078 (27.38) 1.000 (25.40) 2.000 (50.80) 1.500 (38.10)
20-24 1.062 (26.97)
24 1.500 (38.10) 1.312 (33.32) 1.094 (27.79) 2.125 (53.98) 1.750 (44.45)
32 2.000 (50.80) 1.781 (45.24) 1.281 (32.54) 2.250 (57.15) 2.375 (60.33)
40 2.500 (63.50) 2.281 (57.94) 1.469 (37.31) 2.375 (60.33) 2.875 (73.03)
48 3.000 (76.20) 2.781 (70.64) 1.562 (39.67) 2.500 (63.50) 3.375 (85.73)
Size code number E dia. +.000 -.005 (0.13) (see note 7) inch (mm) F +.000 -.005 (0.13) inch (mm) G rad inch (mm) H +.047 (1.19) -.000 inch (mm) J +.047 (1.19) -.000 inch (mm)
12 1.250 (31.75) .156 (3.96) .594 (15.09) .562 (14.27) 1.562 (39.67)
12 -16 1.500 (38.10)
16 .719 (18.26)
20 1.844 (46.84) .875 (22.23) .625 (15.88) 1.625 (41.28)
20-24 2.125 (53.98) .188 (4.78) .688 (17.48)
24 1.000 (25.40) 1.688 (42.88)
32 2.750 (69.85) 1.312 (33.32) .750 (19.05)
40 3.281 (83.34) 1.562 (39.67) .812 (20.62) 1.719 (43.66)
48 3.781 (96.04) 1.812 (46.02) 1.750 (44.45)
Size code number K inch (mm) M dia. ± .015 (0.38) inch (mm) N dia. inch (mm) T Min Dia. inch (mm)
min max
12 .125 (3.18) .164 (4.17) .922 (23.42) .669 (16.99) .609 (15.47)
12-16
16 .141 (3.58) .176 (4.47) 1.172 (29.77) .904 (22.96) .859 (21.82)
20 .156 (3.96) .221 (5.61) 1.484 (37.69) 1.138 (28.91) 1.059 (26.90)
20-24
24 .172 (4.37) .234 (5.94) 1.734 (44.04) 1.372 (34.85) 1.309 (33.25)
32 .203 (5.16) .322 (8.18) 2.359 (59.92) 1.841 (46.76) 1.793 (45.54)
40 .234 (5.94) .333 (8.46) 2.859 (72.62) 2.341 (59.46) 2.293 (58.24)
48 .250 (6.35) .344 (8.74) 3.359 (85.32) 2.841 (72.16) 2.793 (70.94)

See notes at end of figure.

FIGURE 1. Hose to swivel flange dimensions and configurations - Continued.

Size code number V min inch (mm)
12 .065 (1.65)
12-16
16
20 .090 (2.29)
20-24
24
32 .100 (2.54)
40
48

NOTES:

1. Dimensions are in inches.

2. Metric equivalents are given for information only.

3. Unless otherwise specified tolerances are ±.005 inch (0.13 mm), angles ±.5°.

4. Break sharp edges and remove all hanging burrs and slivers.

5. Annular tool marks up to 63 µin (1.6 µm) Ra max will be allowed, machined surfaces shall be finished to 100µ-in (2.54 µm) Ra, unless otherwise specified on the figures. Surface finish shall be in accordance with ASME B46.1.

6. Internal flow passage around bend shall be smooth and free from projections.

7. Diameters A, D, and E shall be concentric with each other within .010 inch (0.25 mm) TIR.

8. Reduction by forging draft angle of 7° max permissible.

FIGURE 1. Hose to swivel flange dimensions and configurations - Continued.

REQUIREMENTS:

Dimensions and configuration shall be in accordance with figure 1.

For design features purposes, this standard takes precedence over documents referenced herein.

Porosity test: finished castings shall not leak when subjected to 100-psi (0.7 MPa) internal air pressure and submerged in water for 3 minutes minimum.

This part is designed for use in fuel and oil systems with maximum operating pressures in accordance with table I.

TABLE I. Maximum operating pressure.

Size code number Material PSI MPa
12 thru 16 Aluminum alloy 1500 10.3
24 thru 28 Aluminum alloy 500 3.4
32 thru 48 Aluminum alloy 500 3.4

Maximum operating temperature 275° F (135°C).

Materials and finishes shall be in accordance with table II.

TABLE II. Material and finish code letters.

Code letter Material Finish
D Aluminum alloy 2014-T4 in accordance with SAE-AMS-QQ-A-225/6 or aluminum alloy casting in accordance with ASTM B108/B108M Anodized anodize in accordance with MIL-A-8625, type 2, dye light blue
DA Aluminum alloy 2014-T4 in accordance with SAE-AMS-QQ-A-225/6 or aluminum alloy casting in accordance with ASTM B108/B108M Chemical conversion coating in accordance with, MIL-DTL-5541, type II, class 3
DB Aluminum alloy 2024 or 2024 forging and bar stock in accordance with SAE-AS4875 Anodized anodize in accordance with MIL-A-8625, type 2, dye blue
DC Aluminum alloy 2024 or 2024 forging and bar stock in accordance with SAE-AS4875 Chemical conversion coating in accordance with, MIL-DTL-5541, type II, class 3
W Aluminum alloy 7075-T73 or T7352 in accordance with SAE-AS4875 Anodize in accordance with MIL-A-8625, type 2, dye brown
WC Aluminum alloy 7075-T73 or T7352 in accordance with SAE-AS4875 Chemical conversion coating in accordance with, MIL-DTL-5541, type II, class 3

The connector flange to hose shall not exceed the weight limits specified in table III.

TABLE III. Weight limits. 1/

Size code number Weight max lbs. (gr)
12 .07 (31.8)
12-16 .09 (40.8)
16 .11 (49.9)
20 .19 (86.18)
20-24 .22 (99.8)
24 .27 (122.5)
32 .52 (235.9)
40 .74 (335.7)
48 .97 (440.0)

1/ Metric equivalents given for information only.

Part or Identifying Number (PIN):

The PIN consists of prefix "MS" the specification sheet number, and a dash, letter for material/finish and number for size code. Unassigned PIN's shall not be used.

MS 20758 - D 12
Size code number (see figure1)
Material/finish code letter (see table II)
Dash
Specification sheet number
MS prefix

PIN example: MS20758-D12 indicates a 45° flange to hose adapter .750 inch (19.05 mm) hose ID to a 1.250 inch (31.75 mm) flange.

Marking: Part shall be permanently marked with the MS PIN, and include the manufacturers CAGE, name, or trademark.

Referenced documents shall be of the issue in effect on date of invitation for bid.

Changes from previous issues. Marginal notations are not used in this revision to identify changes with respect to the previous issue due to the extent of the changes.

Referenced documents.

This document references the following:

MIL-A-8625

MIL-DTL-5541

ASME B46.1

ASTM B108/B108M

SAE-AMS-QQ-A-225/6

SAE-AS4875

SAE-AS5132

CONCLUDING MATERIAL

Custodians:

Army - AV

Navy - AS

Air Force - 71 (Project 4730-2018-113)

DLA - CC

Preparing activity:

DLA - CC

Review activities:

Army - MI

Navy - MC, SA

Air Force - 99


NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at https://assist.dla.mil.

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