DETAIL SPECIFICATION SHEET
ELBOW, FLARED TUBE, FLANGED, SWIVEL, 90 DEGREE
INCH-POUND · MS20762F · 2 March 2020 · Superseding MS20762E w/Amendment 1, 6 August 2019 · AMSC/NA · FSC 4730
FIGURE 1. Elbow, flanged 90°.
FIGURE 1. Elbow, flanged 90° – Continued.
| Size | Tube OD | Thread T SAE-AS8879 |
A dia. ± .003 |
B +.047 -.000 |
C +.047 -.000 |
D dia. +.000 -.005 |
E dia. +.000 -.005 |
F +.000 -.005 |
G rad. Ref. |
H +.047 -.000 |
|---|---|---|---|---|---|---|---|---|---|---|
| -10 (See note 10) | .750 | 1.0625-12UNJF-3A | .609 | 1.156 | 1.938 | .938 | 1.250 | .156 | .594 | .562 |
| -12 | ||||||||||
| -12-16 | 2.000 | 1.500 | ||||||||
| -16 | 1.000 | 1.3125-12UNJF-3A | .844 | 1.281 | 2.125 | 1.188 | .719 | |||
| -20 | 1.250 | 1.625-12UNJF-3A | 1.078 | 1.500 | 2.375 | 1.500 | 1.844 | .875 | .625 | |
| -20-24 | 1.562 | 2.562 | 2.125 | .188 | .650 | |||||
| -24 | 1.500 | 1.875-12UNJF-3A | 1.312 | 1.688 | 2.688 | 1.750 | 1.000 | |||
| -32 | 2.000 | 2.500-12UNJF-3A | 1.781 | 2.042 | 3.375 | 2.375 | 2.750 | 1.312 | .750 | |
| -40 | 2.500 | 3.000-12UNJF-3A | 2.281 | 2.375 | 3.500 | 2.875 | 3.201 | 1.582 | .812 | |
| -48 | 3.000 | 3.500-12UNJF-3A | 2.781 | 2.625 | 3.675 | 3.375 | 3.701 | 1.812 |
| Size | J +.047 -.000 |
K Min |
M dia. ± .015 |
N dia. | V ± .015 |
W Approx. |
X Approx. |
Y ± .015 |
Weight max | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Al alloy | Steel | Ti | |||||||||
| -10 (See note 10) | 1.344 | .100 | .922 | .669 | .891 | .500 | .562 | .724 | .12 | .34 | .20 |
| -12 | .125 | ||||||||||
| -12-16 | 1.406 | .15 | .42 | .25 | |||||||
| -16 | .141 | 1.172 | .904 | 1.156 | .562 | .625 | .771 | .18 | .50 | .30 | |
| -20 | 1.500 | .156 | 1.484 | 1.138 | 1.438 | .625 | .750 | .818 | .32 | .90 | .53 |
| -20-24 | 1.650 | .36 | 1.00 | .60 | |||||||
| -24 | .172 | 1.734 | 1.372 | 1.710 | .688 | .943 | .45 | 1.26 | .74 | ||
| -32 | 2.062 | .203 | 2.309 | 1.841 | 2.250 | .750 | .938 | 1.193 | 1.02 | 2.88 | 1.69 |
| -40 | 1.938 | .234 | 2.659 | 2.341 | 2.812 | .875 | 1.000 | .969 | 1.37 | 3.84 | 2.26 |
| -48 | 2.042 | .250 | 3.389 | 2.841 | 3.344 | 1.000 | 1.047 | 1.62 | 5.10 | 2.68 | |
See notes at end of figure.
Inch to millimeter conversion
| Inches | mm | Inches | mm | Inches | mm | Inches | mm | Inches | mm | Inches | mm | Inches | mm | Inches | mm |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.003 | 0.08 | 0.176 | 4.47 | 0.420 | 10.67 | 0.771 | 19.58 | 1.130 | 28.70 | 1.562 | 39.67 | 2.062 | 52.37 | 2.812 | 71.42 |
| 0.005 | 0.13 | 0.180 | 4.57 | 0.450 | 11.43 | 0.812 | 20.62 | 1.156 | 29.36 | 1.582 | 40.18 | 2.125 | 53.98 | 2.841 | 72.16 |
| 0.010 | 0.25 | 0.188 | 4.78 | 0.500 | 12.70 | 0.818 | 20.78 | 1.172 | 29.77 | 1.620 | 41.15 | 2.250 | 57.15 | 2.875 | 73.03 |
| 0.015 | 0.38 | 0.200 | 5.08 | 0.530 | 13.46 | 0.844 | 21.44 | 1.188 | 30.18 | 1.644 | 41.76 | 2.260 | 57.40 | 2.880 | 73.15 |
| 0.016 | 0.41 | 0.203 | 5.16 | 0.562 | 14.27 | 0.875 | 22.23 | 1.193 | 30.30 | 1.650 | 41.91 | 2.281 | 57.94 | 3.000 | 76.20 |
| 0.030 | 0.76 | 0.221 | 5.61 | 0.594 | 15.09 | 0.891 | 22.63 | 1.250 | 31.75 | 1.688 | 42.88 | 2.309 | 58.65 | 3.201 | 81.31 |
| 0.047 | 1.19 | 0.234 | 5.94 | 0.600 | 15.24 | 0.900 | 22.86 | 1.260 | 32.00 | 1.690 | 42.93 | 2.341 | 59.46 | 3.344 | 84.94 |
| 0.062 | 1.57 | 0.250 | 6.35 | 0.609 | 15.47 | 0.904 | 22.96 | 1.281 | 32.54 | 1.710 | 43.43 | 2.375 | 60.33 | 3.375 | 85.73 |
| 0.100 | 2.54 | 0.300 | 7.76 | 0.625 | 15.88 | 0.922 | 23.42 | 1.312 | 33.32 | 1.734 | 44.04 | 2.500 | 63.50 | 3.389 | 86.08 |
| 0.120 | 3.05 | 0.320 | 8.13 | 0.650 | 16.51 | 0.938 | 23.83 | 1.344 | 34.14 | 1.750 | 44.45 | 2.562 | 65.07 | 3.500 | 89.90 |
| 0.125 | 3.18 | 0.322 | 8.18 | 0.669 | 16.99 | 0.943 | 23.95 | 1.370 | 34.80 | 1.781 | 45.24 | 2.625 | 66.68 | 3.675 | 93.35 |
| 0.141 | 3.58 | 0.333 | 8.46 | 0.688 | 17.48 | 0.969 | 24.61 | 1.372 | 34.85 | 1.812 | 46.02 | 2.659 | 67.54 | 3.701 | 94.01 |
| 0.150 | 3.81 | 0.340 | 8.64 | 0.719 | 18.26 | 1.000 | 25.40 | 1.406 | 35.71 | 1.841 | 46.76 | 2.680 | 68.07 | 3.840 | 97.54 |
| 0.156 | 3.96 | 0.344 | 8.74 | 0.724 | 18.39 | 1.020 | 25.91 | 1.438 | 36.53 | 1.938 | 49.23 | 2.688 | 68.28 | ||
| 0.164 | 4.17 | 0.360 | 9.14 | 0.740 | 18.80 | 1.047 | 26.59 | 1.484 | 37.69 | 2.000 | 50.80 | 2.750 | 69.85 | ||
| 0.172 | 4.37 | 0.362 | 9.19 | 0.750 | 19.05 | 1.078 | 27.38 | 1.500 | 38.10 | 2.042 | 51.87 | 2.781 | 70.64 |
NOTES:
- Dimensions are in inches.
- Metric equivalents are given for information only.
- Internal flow passage around bend shall be smooth and free from projections.
- Unless otherwise specified tolerances shall be ±.005 inches (0.13 mm) and angles ±.5°.
- Unless otherwise specified surface roughness shall not exceed 100µ-inches (2.54µm) Ra in accordance with ASME B46.1. Angular tool marks up to 63 µ-inches (1.6µm) Ra will be allowed.
- For steel castings surface roughness shall not exceed 125µ-inches. Level of acceptance shall be in accordance with ASTM A997 level III, samples as specified in DLA Land and Maritime drawing 19002. Angular tool marks up to 63 µ-inches (1.6µm) Ra will be allowed.
- Diameters A, D, and E shall be concentric with each other within .010 inch (0.25mm) full indicator movement.
- Reduction by forging draft angle of 7° is permissible.
- Dimensioning and tolerancing are in accordance with ASME Y14.5.
- The -10 parts shall be forged elbows only. The K dimension of .100 inches is applicable only to the bend section of the 90º elbow, only at the end of the straight drilling process. The drilled wall thickness shall be .125 inches.
- Proof pressure testing is not applicable to the -10 due to the thinner wall thickness.
REQUIREMENTS
Design and construction: See table I.
Additional testing and marking requirements shall be in accordance with DLA Land and Maritime drawing 19002.
For nominal use on fuel and oil systems.
Sizes -40 and -48 are not to be used unless approved by the program office.
Except where specified, materials shall be in accordance with SAE-AS4875 or optional material: aluminum alloy casting in accordance with ASTM B108/B108M.
Surfaces. All machined surfaces shall be finished to 250 µin Ra (.00635mm), unless otherwise specified.
Fitting surface shall be free of all burrs and slivers.
Material designators and dash numbers for tube sizes see table I.
Preferred method of steel casting is investment casting. Cast elbows may include machine stock to finish the geometry as required.
Performance requirements shall be in accordance with DLA Land and Maritime drawing 19002.
Porosity test. Finished elbows shall not leak when subjected to 100 psi (700 kPa) air pressure and submerged in water for 3 minutes.
Proof pressure testing. When specified by the PIN designator “P” elbows shall be proof pressure tested in accordance with DLA Land and Maritime drawing 19002. Proof pressure testing is not applicable to the -10 due to the thinner wall thickness.
TABLE I. Material designators and dash numbers for tube sizes. 1/
| Steel (Blank) 2/ |
Aluminum “D” alloy 2014/2024 3/ 4/ |
Aluminum “W” alloy 7075 5/ |
CRES 304 6/ |
CRES 316 6/ |
CRES 321 6/ |
Titanium 7/ |
|---|---|---|---|---|---|---|
| -10 | -D10 | -W10 | -J10 | -K10 | -R10 | -T10 |
| -12 | -D12 | -W12 | -J12 | -K12 | -R12 | -T12 |
| -12-16 | -D12-16 | -W12-16 | -J12-16 | -K12-16 | -R12-16 | -T12-16 |
| -16 | -D16 | -W16 | -J16 | -K16 | -R16 | -T16 |
| -20 | -D20 | -W20 | -J20 | -K20 | -R20 | -T20 |
| -20-24 | -D20-24 | -W20-24 | -J20-24 | -K20-24 | -R20-24 | -T20-24 |
| -24 | -D24 | -W24 | -J24 | -K24 | -R24 | -T24 |
| -32 | -D32 | -W32 | -J32 | -K32 | -R32 | -T32 |
| -40 | -D40 | -W40 | -J40 | -K40 | -R40 | -T40 |
| -48 | -D48 | -W48 | -J48 | -K48 | -R48 | -T48 |
1/ Material designators are in accordance with SAE-AS4875 the procurement specification.
2/ Steel parts that are casted the casting alloy shall be ASTM A732/A732M Grade 6N.
3/ Aluminum alloys 2014/2024 code D are inactive for new design, use aluminum alloy 7075 code W aluminum for new design.
4/ Aluminum parts that are casted the casting alloy shall be A356 T6 in accordance with SAE-AMS4260 or F357 T6 in accordance with SAE-AMS4289.
5/ Aluminum parts that are forged the forging material shall be 7075-T73 in accordance with SAE-AMS-QQ-A-367 or SAE-AMS4141.
6/ Corrosion resistant steel (CRES) for 304, 316 and 321. Casting material for alloy 304 shall be in accordance with ASTM A351/A351M Grade CF8 and for alloy 316 shall be ASTM A351/A351M Grade CF8M.
7/ Titanium shall not be used in oxygen systems.
Finish. Finishes shall be as specified in table II. All plating’s shall be capable of meeting a minimum of 96 hours salt spray test in accordance with ASTM B117. The fittings shall show no evidence of red corrosion after 96 hours of salt spray. Fluid passages, other openings and internal threads shall not be subject to the plating thickness requirement and may have bare areas provided they are protected with a light film of oil.
TABLE II. Elbow finish code.
| Finish code | Material | Plating finish |
|---|---|---|
| Blank | Steel | Cadmium plating in accordance with SAE-AMS-C-81562, type II, class 2 or SAE-AMS-QQ-P-416, type II, class 2, dye black. 1/ 5/ 8/ |
| Aluminum 2/ | Anodize in accordance with MIL-A-8625, type II. | |
| CRES | No additional finish. Passivation in accordance with SAE-AMS2700, method 1, type 6 or 7. | |
| Titanium 3/ | Fluoride phosphate in accordance with SAE-AMS2486. | |
| A | Steel | Zinc-Aluminum in accordance with ASTM F1136/F1136M, grade 3, NC. |
| D | Aluminum 2/ | Anodize in accordance with MIL-A-8625, type II, class 2. Chemical conversion coating in accordance with NAVAIR trivalent chromium pretreatment (TCP) in accordance with MIL-DTL-5541 type II, Class 1A. TCP applied after anodizing. |
| DA | Aluminum 2/ | TCP chemical conversion coating in accordance with NAVAIR TCP in accordance with MIL-DTL-5541 type II, Class 1A. |
| G | Steel | Zinc plating with colorless passivate in accordance with ASTM B633, type V, Fe/Zn 8. |
| H | Steel | Zinc phosphate finish in accordance MIL-DTL-16232 type Z, class 4. |
| J | Steel | Zinc plating in accordance with ASTM B633; type II or III, Fe/Zn 8, or ASTM B695, type II, class 8. 4/ 5/ |
| R | Steel | Zinc plating in accordance with ASTM B633; type VI, Fe/Zn 8 4/ |
| T | Titanium 3/ 9/ | Anodized in accordance with SAE-AMS2488, type 2. |
| V | Steel | Zinc-nickel in accordance with SAE-AMS2417, type 2, grade B. 6/ |
| W | Aluminum alloy 7075-T73 or T7352 7/ in accordance with SAE-AS4875 | Anodize in accordance with MIL-A-8625, type II, class 2, dye brown. |
| WC | Aluminum alloy 7075-T73 or T7352 7/ in accordance with SAE-AS4875 | Anodize in accordance with MIL-A-8625, type II, class 2, dye brown. TCP chemical conversion coating in accordance with, MIL-DTL-5541, type II, class 1A. TCP applied after anodizing. |
| WD | Aluminum alloy 7075-T73 or T7352 7/ in accordance with SAE-AS4875 | TCP chemical conversion coating in accordance with, MIL-DTL-5541, type II, class 1A. Paint brown after applying the TCP |
| Z | Steel | Zinc may be any zinc plating’s from PIN codes H, J, R, V. 4/ 5/ |
| ZN | Steel | Zinc may be any zinc plating from PIN codes H, J, R , V with a colored chromate coating 4/ 5/ |
1/ Embrittlement test need not be run.
2/ Aluminum alloys 2014 and 2024 shall be dyed light blue.
3/ A pretreatment, a modification of the fluoride treatment, or a post treatment shall be applied so the final color of the fittings shall be similar to SAE-AMS-STD-595 colors 36076 through 36293.
4/ Not for use in aircraft. Requires approval from the Program Office for all applications. Zinc-plated materials should be avoided in hydraulic systems with water-glycol fluids. Reference ASTM MNL37 – Fuels and Lubricants Handbook.
5/ These finishes have a chromate conversion coating or chromic acid rinse which includes hexavalent chromium and are not recommended. The use of coatings depositing hexavalent chromium for Army vehicles is prohibited unless otherwise explicitly stated in the contract as a requirement.
6/ The zinc-nickel alloy plate shall contain 12% to 16% nickel. The coating thickness shall be 315µ inches (8µm) minimum coating thickness.
7/ Unless otherwise specified aluminum alloy 7075 shall be dyed brown.
8/ Cadmium shall not be used in oxygen or potable water systems. Cadmium is prohibited from use in NAVSEA-owned shipboard systems in accordance with the requirements of T9070-AL-DPC-020/077-2, unless otherwise approved by NAVSEA. The use of cadmium plating for Army vehicles is prohibited unless otherwise explicitly stated in the contract as a requirement.
9/ Titanium shall not be used in oxygen or potable water systems.
PART OR IDENTIFYING NUMBER (PIN)
The PIN consists of prefix “MS”, the specification sheet number, a dash, a letter/number for material/size and a finish code. Unassigned PIN’s shall not be used.
PIN example: MS20762-D32DAP indicates a 2-inch 7075 aluminum elbow with chemical conversion coating in accordance with MIL-DTL-5541 type II, class 3, and proof pressure tested.
NOTE: The -12 size elbows will replace the -10 size elbows, however the -10 size elbows will not replace the -12 size elbows.
GENERAL GUIDANCE
Marking. The complete PIN shall be permanently marked on one wrench surface or casted on the elbow along with the CAGE or trademark of the foundry. The other wrench flat shall be marked with the Manufactures name, CAGE code, or trademark, and revision letter. The part shall also be marked with the manufacturer’s lot number on either wrench flat.
Marking examples: MS20762-12 / (CAGE) on one wrench flat; LOT# 45ABC / REV F on the other. -12 size parts may be dual marked as MS20762-12 / -10 / (CAGE).
Guidance on use of alternative parts with less hazardous or nonhazardous materials. This specification provides for a number of alternative plating materials via the PIN. Users should select the PIN with the least hazardous material that meets the form, fit and function requirements of their application.
Cadmium is prohibited from use in NAVSEA-owned shipboard systems in accordance with the requirements of T9070-AL-DPC-020/077-2, unless otherwise approved by NAVSEA.
The use of cadmium plating or coatings depositing hexavalent chromium for Army vehicles is prohibited unless otherwise explicitly stated in the contract as a requirement.
For new designs PIN codes Blank, J, Z, and ZN are not to be supplied to Army and Marine ground forces.
Class I and II ozone depleting substances (ODS) shall not be used in MS20762 or any referenced procedures.
Referenced documents shall be of the issue in effect on date of invitations for bid.
Supersession data: Aluminum alloys 2014 and 2024 “D” designator is inactive for new design. For new design use aluminum alloy 7075 “W” designator.
Changes from previous issue. Marginal notations are not used in this revision to identify changes with respect to the previous issue, due to the extent of the changes.