KasperCalc: AS4395 Checker Tool

Fitting End, Flared, Tube Connection — Design Standard

AS4395 Size Code:

Gland Cross-Section — Selected Ring

Click any row below to load its dimensions; the diagram defaults to the first row shown.

Fitting End, Flared, Tube Connection — Design Standard

Source: SAE Aerospace Standard AS4395, Revision B · Custodian: SAE G-3/G-3B

All dimensions in inches.

Basic No. AS4395 /9/ Size Code	Nominal Tube Size	T — Thread per AS8879 Class 3A	A	B+.015 / -.000	C+.000 / -.005	D±.003	E
02	.125	.3125-24 UNJF	.058 - .065	.177	.245	.083	.552 - .565
03	.188	.3750-24 UNJF	.121 - .128	.177	.307	.146	.615 - .628
04	.250	.4375-20 UNJF	.168 - .175	.193	.359	.193	.678 - .691
05	.312	.5000-20 UNJF	.230 - .237	.193	.421	.255	.740 - .753
06	.375	.5625-18 UNJF	.293 - .301	.198	.476	.318	.802 - .816
08	.500	.7500-16 UNJF	.387 - .395	.253	.654	.426	.990 - 1.003
10	.625	.8750-14 UNJF	.480 - .488	.266	.767	.539	1.113 - 1.128
12	.750	1.0625-12 UNJ	.604 - .614	.315	.938	.664	1.363 - 1.380
16	1.000	1.3125-12 UNJ	.839 - .851	.315	1.188	.913	1.613 - 1.630
20	1.250	1.6250-12 UNJ	1.073 - 1.086	.367	1.501	1.147	1.863 - 1.880
24	1.500	1.8750-12 UNJ	1.307 - 1.320	.378	1.750	1.381	2.109 - 2.135
28	1.750	2.2500-12 UNJ	1.542 - 1.557	.451	2.125	1.646	2.484 - 2.510
32	2.000	2.5000-12 UNJ	1.776 - 1.791	.461	2.375	1.880	2.734 - 2.760
40	2.500	3.0000-12 UNJ	2.276 - 2.291	.395	2.882	2.380	3.234 - 3.260
48	3.000	3.5000-12 UNJ	2.776 - 2.791	.395	3.382	2.880	3.734 - 3.760

Basic No. AS4395 /9/ Size Code	F+.002 / -.003	G	H	J±.015	L±.010	M+.015 / -.000	W
02	.250	.433	.005	.448	.542	.063	.005
03	.312	.464	.005	.479	.605	.063	.005
04	.364	.535	.005	.550	.668	.075	.005
05	.426	.535	.005	.550	.730	.075	.005
06	.481	.541	.005	.556	.792	.083	.005
08	.660	.642	.005	.657	.980	.094	.012
10	.773	.743	.005	.758	1.103	.107	.022
12	.945	.849	.008	.864	1.353	.125	.022
16	1.195	.896	.008	.911	1.603	.125	.029
20	1.507	.943	.008	.958	1.853	.125	.029
24	1.756	1.068	.008	1.083	2.099	.125	.029
28	2.131	1.193	.008	1.208	2.474	.125	.044
32	2.381	1.318	.008	1.333	2.724	.125	.044
40	2.881	1.094	.008	1.109	3.224	.125	.044
48	3.381	1.172	.008	1.187	3.724	.125	.044

NOTES:

/1/THIS FITTING END IS DESIGNED FOR USE WITH FITTINGS PER AS4841.
/2/THE CONICAL SEALING SURFACE SHALL BE FREE OF FLAWS, NICKS, AND CHATTER MARKS WHEN VIEWED WITH THE UNAIDED EYE.
3.INTERPRETATION OF DRAWING PER ARP4296.
4.INVENTORIED PARTS WITH FITTING ENDS CONFORMING TO THE PREVIOUS “LETTER CHANGE” OF THIS STANDARD MAY BE USED TO DEPLETION.
5.SURFACE TEXTURE: SYMBOLS PER ASME Y14.36M; REQUIREMENTS PER ASME B46.1. UNLESS OTHERWISE SPECIFIED, MACHINED SURFACES TO BE 125 μin Ra.
6.BREAK EDGES .003 TO .015 UNLESS OTHERWISE SPECIFIED.
7.DIMENSIONING AND TOLERANCING: ASME Y14.5M-1994.
8.DIMENSIONS IN INCHES. UNLESS OTHERWISE SPECIFIED, TOLERANCES: LINEAR DIMENSIONS ±.015, ANGULAR DIMENSIONS ±0°30'.

/9/EXAMPLE OF DRAWING CALLOUT:

TABULATED DRAWING: FITTING END PER AS4395, STYLE G
INDIVIDUAL DRAWING:

                        AS4395 G 08
                        │      │ │
        BASIC NUMBER ───┘      │ │
  STYLE DESIGNATION ───────────┘ │
  SIZE CODE, NOMINAL TUBE ───────┘
  SIZE IN .062 INCREMENTS

10.THE CHANGE BAR ( | ) LOCATED IN THE LEFT MARGIN IS FOR THE CONVENIENCE OF THE USER IN LOCATING AREAS WHERE TECHNICAL REVISIONS, NOT EDITORIAL CHANGES, HAVE BEEN MADE TO THE PREVIOUS ISSUE OF THIS DOCUMENT. AN (R) SYMBOL TO THE LEFT OF THE DOCUMENT TITLE INDICATES A COMPLETE REVISION OF THE DOCUMENT.

Source & Important Notices

Source: SAE International, Aerospace Standard AS4395 Revision B — “Fitting End, Flared, Tube Connection, Design Standard.” Custodian: SAE G-3/G-3B. Drawings are interpreted in third angle projection.
No SAE affiliation or endorsement. SAE International has not participated in the development of this lookup tool and does not approve or endorse it. Verify all dimensions against the current issue of SAE AS4395 before use in design.
Related standards. Use with flared tube fittings per SAE AS4841; interpret drawings per SAE ARP4296; dimensioning and tolerancing per ASME Y14.5M-1994.
Verify critical dimensions. Always confirm fitting-end dimensions against the current SAE AS4395 standard for safety-critical or pressure-containing applications. This tool is a reference aid, not a substitute for engineering judgment.

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