MIL-DTL-0048684B
AMERICAN SOCIETY FOR TESTING AND MATERIALS
INTERNATIONAL (ASTM)
ASTM E1255 - Standard Practice for Radioscopy
(Copies of this document are available online at www.astm.org or from the ASTM
International, 100 Barr Harbor Drive, Conshohocken, PA 19428-2959)
2.4 Order of precedence. In the event of a conflict between the text of this
document and the references cited herein, the text of this document takes precedence.
Nothing in this document, however, supersedes applicable laws and regulations unless a
specific exemption has been obtained.
3. REQUIREMENTS
3.1 First article. When specified in the solicitation or contract order (see 6.2), a
sample shall be subjected to first article inspection in accordance with 4.3.
3.2 Materials. Materials, parts, and assemblies shall comply with requirements
specified on the applicable drawings and referenced specifications.
3.3 X-ray examination of projectile assembly prior to assembly to cartridge case
assembly. The projectile assembly shall be X-rayed for improper assembly, missing or
damaged parts, foreign material and an armed or partially armed fuze.
3.4 X-ray examination of ballistic sample. Prior to ballistic testing, the cartridge
shall be subjected to x-ray examination.
3.5 Functioning. The cartridge assembly shall function, and not cause any
weapon stoppages due to the operation of loading, uncoupling, firing and ejecting, and
comply with the following:
3.5.1 Velocity. When fired single shot from the MK19, MOD III, Grenade
Machine Gun, the mean velocity of the sample cartridge shall be 790 ± 10 feet per second
(fps) and a standard deviation not exceeding 12.0 fps.
3.5.2 Security of crimp of base plug and action time. When fired from the M129
Grenade Launcher, the action time of the cartridge shall not exceed 4 milliseconds and
there shall be no base plug movement more than .005 above flush with the rear of
cartridge case after firing.
3.5.3 Impact functioning. When fired from a MK19, MOD III, Grenade Machine
Gun the projectile assembly shall function satisfactorily upon impact as evidenced by
smoke, flash and sound. There shall be no evidence of an early burst (see 6.8.1).
3.5.4 Safety. When fired from the MK19, MOD III, Grenade Machine Gun or
M129 Grenade Launcher the projectile shall not lodge in the bore of the weapon and
there shall be no evidence of a premature burst (see 6.8.2).
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