AN924 Rev 13
Thread T
A
B
Dash
Tubing
(Ref)
(mm)
(mm)
number
OD
SAE-AS8879
-2
.125
.3125-24UNJF-3B
.563 (14.30)
.219 (5.56)
-3
.188
.3750-24UNJF-3B
.625 (15.88)
.219 (5.56)
-4
.250
.4375-20UNJF-3B
.688 (17.48)
.250 (6.35)
-5
.313
.5000-20UNJF-3B
.750 (19.05)
.250 (6.35)
+.003 (0.08)
-.004 (0.10)
-6
.375
.5625-18UNJF-3B
.813 (20.65)
.266 (6.76)
-8
.500
.7500-16UNJF-3B
1.000 (25.40)
.313 (7.95)
-10
.628
.8750-14UNJF-3B
1.125 (28.58)
.359 (9.12)
-12
.750
1.0625-12UNJ-3B
1.375 (34.93)
-16
1.000
1.3125-12UNJ-3B
1.625 (41.28)
±.016 (0.41)
-20
1.250
1.6250-12UNJ-3B
1.938 (49.23)
-24
1.500
1.875-12UNJ-3B
2.188 (55.58)
.406 (10.31)
-28
1.750
2.250-12UNJ-3B
2.563 (65.10)
-32
2.000
2.500-12UNJ-3B
2.813 (71.45)
±.020 (0.51)
-40
2.500
3.000-12UNJ-3B
3.312 (84.12)
-48
3.500
3.500-12UNJ-3B
3.812 (96.82)
H
G
Max
Dash
C
E
±.010 (0.25)
(see note 5)
number
Dia.
Min.
mm)
(mm)
-2
.313 (7.95)
.629 (15.98)
.500 (12.70)
-3
.375 (9.53)
.699 (17.75)
.562 (14.27)
-4
.438 (11.13)
.771 (19.58)
.625 (15.88)
-5
.500 (12.70)
.842 (21.39)
.687 (17.45)
.005 (0.13)
-6
.563 (14.30)
.914 (23.22)
.750 (19.05)
-8
.750 (19.05)
1.127 (28.63)
.937 (23.80)
-10
.875(22.23)
1.270 (32.26)
1.052 (26.72)
-12
1.063 (27.00)
1.555 (39.50)
1.274 (32.36)
-16
1.313 (33.35)
1.827 (46.41)
1.524 (38.71)
-20
1.625 (41.28)
2.184 (55.47)
1.838 (46.69)
-24
1.875 (47.63)
2.465 (62.61)
2.093 (53.16)
.008 (0.20)
-28
2.250 (57.15)
2.892 (73.46)
2.468 (62.69)
-32
2.500 (63.50)
3.178 (80.72)
2.718 (69.04)
-40
3.000 (76.20)
3.747 (95.17)
3.218 (81.74)
-48
3.500 (88.90)
4.318 (109.68)
3.718 (94.44)
NOTES:
1. Dimensions are in inches.
2. Metric equivalents are given for information only.
3. Unless otherwise specified tolerances are ±.016 inch (0.41 mm) angles ±0.5°.
4. Break sharp edges .and remove all hanging burrs and slivers.
5. Squareness between thread and face of hex shall not exceed H when measured at diameter G, both
sides.
6. Machined surfaces shall be finished to 125µin Ra, forged surfaces shall be 250µin Ra, unless otherwise
specified on the figures. Surface finish shall be in accordance with ASME B46.1.
7. For design features purposes, this standard takes precedence over documents referenced herein.
8. Referenced documents shall be of the issue in effect on date of invitation for bid.
FIGURE 1. Tube nut dimensions and configurations - Continued.
2
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