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MIL-DTL-18866 Revision J:2015

Current
Current

The latest, up-to-date edition.

Fittings, Hydraulic Tube, Flared, 37 Degree and Flareless, General Specification for
Available format(s)

PDF

Published date

25-06-2015

1. SCOPE
2. APPLICABLE DOCUMENTS
3. REQUIREMENTS
4. VERIFICATION
5. PACKAGING
6. NOTES

Specifies 37 degrees flared and flareless steel tube fittings, 1500 and 3000 pounds per square inch (psi) maximum design pressure, -65 degrees F to 250 degrees F temperature range, for use in hydraulic or air systems.

This specification covers 37° flared and flareless steel tube fittings, 1500 and 3000 pounds per square inch (psi) maximum design pressure, -65°F to 250°F temperature range, for use in hydraulic or air systems.

DevelopmentNote
Supersedes MIL F 18866 (H). (07/2015)
DocumentType
Standard
Pages
78
PublisherName
US Military Specs/Standards/Handbooks
Status
Current

MS51819 Revision E:1987 ADAPTER, STRAIGHT, PIPE TO TUBE MALE PIPE END, FLARELESS TYPE, HYDRAULIC
MS51525 Revision B:1988 FITTINGS, HYDRAULIC TUBE, FLARED 37 DEGREE AND FLARELESS, STEEL; ADAPTER, STRAIGHT, TUBE TO BOSS, O-RING, 37 DEGREE FLARED
MS39210 Revision K:2018 NUTS, TUBE COUPLING - SAFETY SLEEVE COMPRESSION TYPE
MS51510 Revision D:2017 TEE, TUBE, 37 DEGREE FLARED
MS51814 Revision E:1987 NIPPLE, TUBE, BULKHEAD, REGULAR HEX, FLARELESS TYPE, HYDRAULIC
MS39199 Revision G:2012 NIPPLE, TUBE-SAFETY SLEEVE COMPRESSION TYPE, BULKHEAD MOUNTING
MS51811 Revision E:1987 TEE, TUBE, FLARELESS TYPE HYDRAULIC
MS51534 Revision A:1979 REDUCER, TUBE, 37 DEGREE FLARED
MS51528 Revision B:1988 FITTINGS, HYDRAULIC TUBE, FLARED, 37 DEGREE AND FLARELESS, STEEL; ELBOW, TUBE TO BOSS, 45 DEGREE, O-RING, 37 DEGREE FLARED
MS51816 Revision E:1987 ADAPTER, STRAIGHT, PIPE TO TUBE, FEMALE PIPE END, FLARELESS TYPE, HYDRAULIC
MS51501 Revision C:2016 NIPPLE TUBE, REGULAR HEX, 37 DEGREE FLARED, SHORT
MS51521 Revision C:2017 ELBOW, TUBE, 90 DEGREE, SWIVEL, 37 DEGREE FLARED
MS51509 Revision D:2017 ELBOW, TUBE, 45 DEGREE, BULKHEAD, 37 DEGREE FLARED
MS51524 Revision C:2017 TEE, TUBE TO SWIVEL, SWIVEL ON BRANCH, 37 DEGREE FLARED
MS51502 Revision C:2016 NIPPLE TUBE, REGULAR HEX, 37 DEGREE FLARED, LONG
MS51504 Revision C:2016 ELBOW, PIPE TO TUBE, 90 DEGREE MALE PIPE END, 37 DEGREE FLARED
MS51532 Revision B:1988 FITTING, HYDRAULIC TUBE, FLARED 37 DEGREE AND FLARELESS, STEEL; CAP, TUBE, 37 DEGREE FLARED
MS51520 Revision C:2017 NIPPLE, TUBE, BULKHEAD, 37 DEGREE FLARED
MS51507 Revision D:2017 ELBOW, TUBE, 90 DEGREE, 37 DEGREE BULKHEAD, FLARED
MS51516 Revision C:2017 TEE, BULKHEAD ON RUN 37 DEGREE FLARED
MS51508 Revision D:2017 ELBOW, PIPE TO TUBE, 45 DEGREE, MALE PIPE END, 37 DEGREE FLARED
MS39207 Revision H:2018 Elbows, Tube - Safety Sleeve Compression Type, 90 Degree
MS39202 Revision G:2012 ELBOWS, PIPE TO TUBE - SAFETY SLEEVE COMPRESSION TYPE, 90 DEGREE, MALE PIPE END
MS39201 Revision G:2012 NIPPLE, TUBE-SAFETY SLEEVE COMPRESSION TYPE
MS51842 Revision E:2017 ELBOW, TUBE TO BOSS 45 DEGREE, O-RING, FLARELESS TYPE, HYDRAULIC
MS51522 Revision C:2017 ELBOW, TUBE, 45 DEGREE SWIVEL, 37 DEGREE FLARED
MS51512 Revision D:2017 TEE, PIPE TO TUBE, MALE PIPE ON BRANCH, 37 DEGREE FLARED
MS51531 Revision B:1985 NUT, TUBE COUPLING, 37 DEGREE FLARED
MS39322 Revision B:2017 ADAPTER: 37 DEGREE FLARE, FEMALE SWIVEL TO WELD SOCKET, 3/4 INCH TO 1 INCH
MS51533 Revision A:1979 SLEEVE, COMPRESSION, TUBE FITTING, 37 DEGREE FLARED
MS51526 Revision A:1979 ADAPTER, STRAIGHT, TUBE TO BOSS, O-RING, 37 DEGREE FLARED (LONG)
MS51530 Revision B:1988 FITTINGS, HYDRAULIC TUBE, FLARED, 37 DEGREE AND FLARELESS, STEEL; TEE, TUBE TO BOSS, BOSS ON RUN, O-RING, 37 DEGREE FLARED
MS51818 Revision E:1987 TEE, PIPE TO TUBE, MALE PIPE ON BRANCH, FLARELESS TYPE, HYDRAULIC
MS51841 Revision E:2017 TEE, TUBE TO BOSS, BOSS ON BENCH, O-RING, FLARELESS TYPE, HYDRAULIC
MS51517 Revision C:2017 CROSS, TUBE, 37 DEGREE FLARED
MS51500 Revision F:2017 FITTINGS, HYDRAULIC TUBE, FLARED 37 DEGREE AND FLARELESS, ADAPTER, STRAIGHT, PIPE TO TUBE, MALE END, 37 DEGREE FLARED
MS51505 Revision C:2016 ELBOW, TUBE, 90 DEGREE, 37 DEGREE FLARED
MS51519 Revision C:2017 NIPPLE, TUBE, LARGE HEX, FOR USE WITH O-RING, 37 DEGREE FLARED
MS51513 Revision D:2017 TEE, PIPE TO TUBE, FEMALE PIPE ON BRANCH, 37 DEGREE FLARED
MS51506 Revision E:2017 FITTINGS, HYDRAULIC TUBE, FLARED 37 DEGREE AND FLARELESS, ELBOW, PIPE TO TUBE, 90 DEGREE, FEMALE PIPE END, 37 DEGREE FLARED
MS51527 Revision D:2000 Fittings, Hydraulic Tube, Flared, 37 Degree and Flareless, Steel; Elbow, Tube to Boss, 90 Degree, O-Ring, 37 Degree Flared
MS51815 Revision F:1987 ELBOW PIPE TO TUBE 90 DEGREE, MALE PIPE END, FLARELESS TYPE, HYDRAULIC
MS51523 Revision C:2017 TEE, TUBE TO SWIVEL, SWIVEL ON RUN, 37 DEGREE FLARED
MS39323 Revision C:2017 FITTING, TUBE, REDUCER: 37 DEGREE FLARE
MS51511 Revision D:2017 TEE, PIPE TO TUBE, MALE PIPE ON RUN, 37 DEGREE FLARED
MS51812 Revision F:1987 NIPPLE, TUBE, BULKHEAD, FLARELESS TYPE HYDRAULIC
MS51515 Revision D:2017 TEE, TUBE, BULKHEAD ON BRANCH, 37 DEGREE FLARED
MS51817 Revision E:1987 ELBOW, PIPE TO TUBE, 45 DEGREE MALE PIPE END, FLARELESS TYPE, HYDRAULIC
MS51820 Revision E:1987 ELBOW, TUBE, 90 DEGREE, FLARELESS TYPE, HYDRAULIC
MS51518 Revision C:2017 PLUG, MACHINE THREAD, 37 DEGREE FLARED
MS51813 Revision E:1987 ELBOW, PIPE TO TUBE 90 DEGREE, FEMALE PIPE END, FLARELESS TYPE, HYDRAULIC
MS51503 Revision C:2016 ADAPTER, STRAIGHT, PIPE TO TUBE, FEMALE PIPE END, 37 DEGREE FLARED
MS51514 Revision D:2017 TEE, PIPE TO TUBE, FEMALE PIPE ON RUN 37 DEGREE FLARED
MS51529 Revision B:1988 FITTINGS, HYDRAULIC TUBE, FLARED, 37 DEGREE AND FLARELESS, STEEL; TEE, TUBE TO BOSS, BOSS ON BRANCH, O-RING

SAE AMS 2486 : 2010 CONVERSION COATING OF TITANIUM ALLOYS FLUORIDE-PHOSPHATE TYPE
ISO/IEC 17025:2005 General requirements for the competence of testing and calibration laboratories
SAE AMS 5645 : 2016 STEEL, CORROSION AND HEAT RESISTANT, BARS, WIRE, FORGINGS, TUBING, AND RINGS, 18CR - 10NI - 0.40TI (321), SOLUTION HEAT TREATED
SAE AMS QQ P 416 : 2016 PLATING, CADMIUM (ELECTRODEPOSITED)
ASTM B 338 : 2017 : REDLINE Standard Specification for Seamless and Welded Titanium and Titanium Alloy Tubes for Condensers and Heat Exchangers
SAE AMS P 5510 : 2013 O-RING, PREFORMED, STRAIGHT THREAD TUBE FITTING BOSS, TYPE 1 HYDRAULIC (-65 TO 160 DEGREES F)
SAE AMS 2488 : 2000 ANODIC TREATMENT - TITANIUM AND TITANIUM ALLOYS SOLUTION PH 13 OR HIGHER
MIL-DTL-16232 Revision G:2000 PHOSPHATE COATING, HEAVY, MANGANESE OR ZINC BASE
ANSI/NCSL Z540 3 : 2006(R2013) REQUIREMENTS FOR THE CALIBRATION OF MEASURING AND TEST EQUIPMENT
SAE AMS 6382 : 2014 STEEL, BARS, FORGINGS, AND RINGS 0.95CR - 0.20MO (0.38 - 0.43C) (SAE 4140) ANNEALED
ASTM A 29/A29M : 2016 : REDLINE Standard Specification for General Requirements for Steel Bars, Carbon and Alloy, Hot-Wrought
SAE AMS 5643 : 2016 STEEL, CORROSION-RESISTANT, BARS, WIRE, FORGINGS, MECHANICAL TUBING, AND RINGS, 16CR - 4.0NI - 0.30CB (NB) - 4.0CU, SOLUTION HEAT TREATED, PRECIPITATION HARDENABLE
SAE AMS 5743 : 2014 STEEL, CORROSION AND HEAT-RESISTANT, BARS AND FORGINGS 15.5CR - 4.5NI - 2.9MO - 0.10N SOLUTION HEAT TREATED, SUB-ZERO COOLED, EQUALIZED, AND OVER-TEMPERED
ASTM E 384 : 2017 : REDLINE Standard Test Method for Microindentation Hardness of Materials
ASTM A 693 : 2016 : REDLINE Standard Specification for Precipitation-Hardening Stainless and Heat-Resisting Steel Plate, Sheet, and Strip
MS51825 Revision H:2008 SLEEVES, CLINCHES, TUBE FITTING, FLARELESS TYPE, HYDRAULIC
SAE J 403 : 2014 CHEMICAL COMPOSITIONS OF SAE CARBON STEELS
SAE AMS 5647 : 2017 STEEL, CORROSION-RESISTANT, BARS, WIRE, FORGINGS, MECHANICAL TUBING, AND RINGS, 19CR - 9.5NI, SOLUTION HEAT TREATED
MIL-STD-889 Revision C:2016 DISSIMILAR METALS
SAE J 1926/1 : 2016 CONNECTIONS FOR GENERAL USE AND FLUID POWER - PORTS AND STUD ENDS WITH ASME B1.1 THREADS AND O-RING SEALING - PART 1: THREADED PORT WITH O-RING SEAL IN TRUNCATED HOUSING
SAE AMS 5567 : 2015 STEEL, CORROSION RESISTANT, SEAMLESS OR WELDED HYDRAULIC TUBING, 19CR - 10NI (304), SOLUTION HEAT TREATED
SAE AMS 2417 : 2013 PLATING, ZINC-NICKEL ALLOY
SAE AMS C 81562 : 1998 COATINGS, CADMIUM, TIN-CADMIUM AND ZINC (MECHANICALLY DEPOSITED)
ASTM B 567 : 1998 Standard Test Method for Measurement of Coating Thickness by the Beta Backscatter Method
SAE J 515 : 2015 SPECIFICATION FOR O-RING MATERIALS USED WITH HYDRAULIC CONNECTORS
SAE AMS 4945 : 2014 TITANIUM ALLOY TUBING, SEAMLESS, HYDRAULIC 3AL - 2.5V, CONTROLLED CONTRACTILE STRAIN RATIO COLD WORKED, STRESS RELIEVED
SAE J 514 : 2012 HYDRAULIC TUBE FITTINGS
SAE AS 28778 : 2016 O-RING, STRAIGHT THREAD TUBE FITTING BOSS MOLDED FROM AMS-P-5510 RUBBER
SAE AMS 2700E : 2011 PASSIVATION OF CORROSION RESISTANT STEELS
SAE J 524 : 2016 SEAMLESS LOW-CARBON STEEL TUBING ANNEALED FOR BENDING AND FLARING
SAE AMS 5639 : 2017 STEEL, CORROSION-RESISTANT, BARS, WIRE, FORGINGS, MECHANICAL TUBING, AND RINGS, 19CR - 10NI, SOLUTION HEAT TREATED
SAE AMS 6370 : 2016 STEEL, BARS, FORGINGS, AND RINGS, 0.95CR - 0.20MO (0.28 - 0.33C) (SAE 4130)
ASTM A 276/A276M : 2017 : REDLINE Standard Specification for Stainless Steel Bars and Shapes
MS51889 Base Document:1974 Washer, Back-Up, 37 Degree Flared and Flareless Type, Hydraulic
FED-STD-H28 Revision A:1994 Screw-Thread Standards for Federal Services
SAE AMS 5604 : 2016 STEEL, CORROSION RESISTANT, SHEET, STRIP, AND PLATE, 16.5CR - 4.0NI - 4.0CU - 0.30CB, SOLUTION HEAT TREATED, PRECIPITATION HARDENABLE
MIL-C-15726 Revision F:1988 COPPER NICKEL ALLOY, SHEET, PLATE, STRIP, BAR, ROD AND WIRE
SAE AMS 4928 : 2016 TITANIUM ALLOY BARS, WIRE, FORGINGS, RINGS, AND DRAWN SHAPES, 6AL - 4V, ANNEALED

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