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: -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:
    • Fiting: Dry film lubricant per AS5272, TY I, on all surfaces except none in flow hole.
    • Lockring: Passivate per AMS2700, Type 2.
Unit of Measure

Specifications

Tube OD (REF)

 N/A 20.000

A Thread
-4g6g

 N/A MJ27x1.5

B Thread
-4h6h

 N/A MJ24x1.5

C (± .09)

 N/A 33.700

D

 N/A 18.00-18.30

E (+.20/-0)

 N/A 17.650

F (+0.15/-0.05)

 N/A 21.900

G (MIN)

 N/A 24.350

H (± 0.2)

 N/A 28.400

K (+0.50/-0)

 N/A 14.000

N (± 0.20)

 N/A 7.000

O-Ring Size

 N/A A0212

Port Rosan No.

 N/A PS10047-253

Port SAE Ident. No.

 N/A MA2110-253

P (± 0.50)

 N/A 20.700

R - MAX

 N/A 4.100

Porting Tool No.

 N/A RPTM253

Broach Tool No.

 N/A RFMOPB253

O-Ring Tool No.

 N/A ORTM2415

Wrench Part Number

 N/A RFM6828-253W

Lockring Drive Tool Part Number

 N/A RFM6828-253D

Removal Tool Part Number

 N/A RFM253LPDE

L (+.400/-.400)

 N/A 21.450

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 MALE ADAPTER INSTALLATIONS IN VALVE AND CYLINDER BODIES, MANIFOLDS ETC. WITH 115000 KPa 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 TSB84-0103.
e. "P" AND "R" 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.

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 APPLICABLE MA2119-( )-( ) IDENTIFICATION NUMBER AND SHALL ALSO BE DURABLY MARKED WITH THE COMPLETE HFS PART NUMBER PER AS478, METHOD 35 D.
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.
7. BROACH TOOLS SPECIFIED ARE HAND HELD IMPACT TYPE. FOR NON-IMPACT, WOBBLE OR EDM TYPES CONTACT HFS / FITTINGS ENGINEERING DEPARTMENT.