Howmet Fastening Systems
Howmet Fastening Systems
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Website: www.hfs.howmet.com
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THREAD: ISO 5855-3 (MA1370) -4g6g
  1. MATERIALS:
    • Fitting: 6AI-4V titanium per AMS4928, AMS4965 or AMS4967 annealed, 900 MPa UTS MIN.
    • Lockring: A286 cres per AMS5731 or AMS5734, 34-40 HRC.
  2. FINISH:
    • Fitting: Dry film lubricant per AS5272, Type I, on all surfaces except none in flow hole.
    • Lockring: Passivate per AMS2700, Type 2.
Unit of Measure

Specifications

AECMA part number

 N/A EN3566-2220

Tube OD (REF)

 N/A 20.000

A Thread
ISO 5855-3 (MA1370)
-4g6g

 N/A MJ27x1.5

B Thread
ISO 5855-3 (MA1370)
-4h6h

 N/A MJ22x1.5

C (± .09)

 N/A 30.200

D

 N/A 18.00-18.30

E (+.20/-0)

 N/A 15.900

F (+0.15/-0.05)

 N/A 19.900

G (REF)

 N/A 24.920

H (MIN)

 N/A 22.380

K (± .20)

 N/A 23.250

L (+.50/-0)

 N/A 13.350

M (+.15/-.10)

 N/A 3.000

N (± .40)

 N/A 15.500

P (± .20)

 N/A 7.000

O-Ring Size (REF)

 N/A A0190

Adapter weight kg/100 pcs approx

 N/A 4.300

Port Rosan No.

 N/A PS10047-231

R (± .50)

 N/A 15.600

S (MAX)

 N/A 4.100

Porting Tool No.

 N/A RPTM231

Basic Broach Tool Impact Type

 N/A RFMOPB231

O-Ring Installation Tool Number

 N/A ORTM2215

Combination Wrench and Drive Tool

 N/A RFM231-2715DW

Lockring Removal Tool Number

 N/A RFM231LPDE

Port AECMA No.

 N/A EN2602-231

Engineering information

N/A ENGINEERING INFORMATION:
a. THESE PARTS ARE PRIMARILY DESIGNED FOR USE IN 28 MPa HYDRAULIC WORKING PRESSURE SYSTEMS, 235°C MAX TEMPERATURE AND COMPATIBLE WITH TITANIUM.
b. THESE PARTS PROVIDE SEMI-PERMANENT MALE ADAPTER INSTALLATIONS IN VALVE AND CYLINDER BODIES, MANIFOLDS ETC. WITH 115 MPa SHEAR STRENGTH MINIMUM.
c. SERRATED LOCKRING PREVENTS ROTATION WHEN MATING LINES ARE ATTACHED OR REMOVED.

Installation information

N/A INSTALLATION INFORMATION:
d. ADAPTERS TO BE INSTALLED AND REMOVED PER HFS TECHNICAL SALES BULLETIN TSB80-0305 OR AECMA EN2608 OR SAE MA2114.
e. "R" AND "S" STAND-OFF DIMENSIONS ARE FOR DESIGN PURPOSES ONLY. DO NOT USE AS INSTALLATION DATA.
f. THIS DIMENSION MEETS THE MINIMUM REQUIREMENTS OF AECMA STANDARD EN2604, EXCEPT -04 PER MBB STANDARD NO. TKF-4500F-01-02.
g. O-RINGS MUST BE SPECIFIED SEPARATELY AND SHALL BE SELECTED BASED ON SYSTEM FLUID AND TEMPERATURE AND ARE NOT SUPPLIED BY HFS.

Notes

N/A NOTES: UNLESS OTHERWISE SPECIFIED
2. LOCKRING RETAINED ON ADAPTER BY CONTROLLED INTERFERENCE FIT. ONE TOOTH REMOVED FROM THE LOCKRING EXTERNAL SERRATION FOR METRIC IDENTIFICATION PURPOSES.
3. SEALING SURFACE: NO VISIBLE DEFECTS. TO BE PROTECTED FOR SHIPMENT. TAKE CARE IN HANDLING.
4. THIS PART IS USED IN CONJUNCTION WITH AN O-RING. O-RING SIZE PER MA2010 (IS03601/I SERIES A).
5. ALL INTERIOR PACKAGES SHALL BE MARKED WITH EN3566-( ) IDENTIFICATION NUMBER, EXCEPT FOR SIZE -04, AND SHALL ALSO BE DURABLY MARKED WITH THE COMPLETE HFS PART NUMBER PER EN2424, STYLE G (AS478, METHOD 35D).
6. SURFACE ROUGHNESS: MACHINED SURFACES SHALL BE SMOOTH TO 3.2 MICROMETER Ra, EXCEPT SERRATION 6.3 MICROMETER Ra AND SEALING SURFACES 1.6 MICROMETER Ra PER ASME B46.1.