Howmet Fastening Systems
Howmet Fastening Systems
Phone: Sales +1 800 992 4444
Technical Support +1 310 784 6409
Email: HFSTechSupport@howmet.com
Website: www.hfs.howmet.com
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THREAD: MA1370
  1. MATERIALS:
    • Plug: 6AI-4V titanium per AMS4928, AMS4965 or AMS4967, 900 MPa.
    • Lockring: A286 cres per AMS5731 or AMS5734, 34-40 HRC.
  2. FINISH:
    • Plug dry film lubricant per AS5272, Type I, on all surfaces except cavity.
    • Lockring: Passivate per AMS2700, Type 2.
Unit of Measure

Specifications

A Thread
MA1370
-4h6h

 N/A MJ24x1.5

B (± 0.09)

 N/A 33.700

C (+0.15/-0.05)

 N/A 21.900

D (MIN)

 N/A 24.350

E (± 0.20)

 N/A 17.500

F (+0.50/-0)

 N/A 14.000

G (± 0.2)

 N/A 7.000

H (REF)

 N/A 27.410

O-Ring Size (REF)

 N/A A0212

Plug weight kg/100 pcs approx

 N/A 5.770

Port PS10047(MA2110) Dash number

 N/A -253

J (± 0.50)

 N/A 9.800

K (MAX)

 N/A 4.100

Porting Tool No.

 N/A RPTM253

Basic Broach Tool Impact Type

 N/A RFMOPB253

O-Ring Installation Tool Number

 N/A ORTM2415

Lockring Drive Tool Part Number

 N/A RFM6828-253D

Lockring Removal Tool Number

 N/A RFM253LPDE

Tools

Wrench Part Number

 N/A RFM6828-253W

Engineering information

N/A ENGINEERING INFORMATION:
a. THESE PARTS ARE PRIMARILY DESIGNED FOR USE IN 28000 KPa WORKING PRESSURE SYSTEMS, 235° C MAX TEMPERATURE AND COMPATIBLE WITH TITANIUM.
b. THESE PARTS PROVIDE SEMI-PERMANENT PLUG INSTALLATIONS IN VALVE AND CYLINDER BODIES, MANIFOLDS ETC... WITH 112000 KPa SHEAR STRENGTH MINIMUM.
c. SERRATED LOCKRING PREVENTS ROTATION.

Installation information

N/A INSTALLATION INFORMATION:
d. PLUGS TO BE INSTALLED AND REMOVED PER HFS TECHNICAL SALES BULLETIN TSB83-1201.
e. "J" AND "K" STAND-OFF DIMENSIONS ARE FOR DESIGN PURPOSES ONLY. DO NOT USE AS INSTALLATION DATA.
f. O-RINGS MUST BE SPECIFIED SEPARATELY AND SHALL BE SELECTED BASED ON SYSTEM FLUID AND TEMPERATURE AND ARE NOT SUPPLIED BY HFS.
g. THE WRENCH END OF THE COMBINATION WRENCH AND DRIVE TOOL RFM( )-( )DW SERIES MAY ALSO BE USED FOR INSTALLATION. CONTACT HFS / FITTINGS ENGINEERING DEPARTMENT FOR PROPER TOOL SIZES.

Notes

N/A NOTES: UNLESS OTHERWISE SPECIFIED
3. LOCKRING RETAINED ON PLUS BY CONTROLLED INTERFERENCE FIT. ONE TOOTH REMOVED FROM THE LOCKRING EXTERNAL SERRATION FOR IDENTIFICATION PURPOSES.
4. SEALING SURFACE: NO VISIBLE DEFECTS. TO BE PROTECTED FOR SHIPMENT.
5. O-RING SIZE PER MA2010.
6. IDENTIFICATION:

  • MARK AT LOCATION SHOWN PER AS478, METHOD 2 OR 15, MANUFACTURER'S NAME, TRADEMARK OR CAGE CODE.
  • BAG AND TAG PER AS478, METHOD 35D. MANUFACTURER'S NAME, TRADEMARK OR CAGE CODE, AS5103 PART NUMBER, IF APPLICALE HFS PART NUMBER.

    7. 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.
    8. LIGHTENING HOLE IN SIZES -170 AND LARGER ONLY. SIZES -153 AND SMALLER ARE SOLID TYPE.