MIL-DTL-24695/3B(SH)
NOTES:
1. Dimensions in millimeters (and inches).
2. Reverse (compression) buttress thread shall be as specified herein and as shown on the vent and test valve
configuration of MIL-DTL-24695/1.
Adapter thread:
Major dia.: 12.265 - 12.375
(external)
Pitch dia.: 11.725 - 11.835
Minor dia.: 11.025 - 11.135
3. Tolerances ±0.5 millimeter (0.020 inch) except as noted.
4. Remove burrs and break sharp edges.
5. Material shall be in accordance with MIL-DTL-24695.
6. Vent and test hose assembly adapter provides a single part for parts provisioning and logistical support.
Adapter is not intended for repair; internal components are not intended for replacement.
FIGURE 1. Vent and test hose assembly adapter Continued.
REQUIREMENTS:
1. Fluid openings shall be sealed before packaging by the use of caps and plugs in accordance with NAS847.
2. Adapter shall have a locking elastomer ring inserted between the hex stock and reverse buttress threads to
dampen shock and vibration.
3. Part number: The part number shall consist of the basic number of this specification sheet followed by a dash
number as specified in table I, indicating end fitting.
Example:
M24695/3-1 - Adapter with 0.438-20 UNF thread fitting in accordance with ANSI/ASME B1.1
TABLE I. Vent and test hose assembly adapter identification of part number.
"A"
"B"
"C"
"D"
Part or
Fitting
Identifying
thread
Specification ID
mm
mm
mm
mm
Fitting thread comments
Number
size
(PIN)
(in)
(in)
(in)
(in)
0.438-20
Machine per SAE J1926-1:
M24695/3-1
ANSI/ASME B1.1
18.5
29
12
19
UNF
7/16-20 to accept
(0.73)
(1.14)
(0.47)
(0.75)
SAE J514 fitting
1/4-18
1/4-18 NPT minimum
M24695/3-2
ASME B1.20.2M
18.5
34
12
19
NPT
thread depth
(0.73)
(1.34)
(0.47)
(0.75)
:9.6 (0.38)
ISO 228-1 minimum
M24695/3-3
G 1/4
ISO 228-1
18.5
29
12
19
thread depth
(0.73)
(1.14)
(0.47)
(0.75)
:10.0 (0.39)
1/2-14
1/2-14 NPT minimum
M24695/3-4
ASME B1.20.2M
26.5
42
12
27
NPT
thread depth
(1.04)
(1.65)
(0.47)
(1.06)
:11.2 (0.44)
2
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