MIL-R-21607
Military Specification, Resins, Polyester, Low Pressure Laminating, Fire-Retardant
Published by U.S. Department of Defense (military specifications) (DoD)
The CFR incorporates MIL-R-21607 by reference, which makes the edition it names part of the regulation. The CFR requires the edition it names, which may not be the newest. To enforce any other edition, the agency must publish the change in the Federal Register.
The 3 editions the CFR requires
Different parts name different editions; each applies where its part says so. Newest first.
MIL-R-21607E, May 25, 1990
As the CFR lists it: “MIL-R-21607E(SH), Military Specification, Resins, Polyester, Low Pressure Laminating, Fire-Retardant, (May 25, 1990)”
- Listed in 46 CFR 160.010-1(d)(4); required by46 CFR 160.010-5 ↗
- Listed in 46 CFR 160.135-5(f)(4); required by46 CFR 160.135-11 ↗
- Listed in 46 CFR 160.156-5(f)(3); required by46 CFR 160.156-11 ↗
MIL-R-21607E, 1990
As the CFR lists it: “Military Specification MIL-R-21607E(SH), Resins, Polyester, Low Pressure Laminating, Fire Retardant (“NPFC MIL-R-21607E(SH)”), 1990”
- Listed in 46 CFR 175.600(f)(2); required by46 CFR 177.410 ↗
MIL-R-21607D, August 5, 1976
As the CFR lists it: “Military Specification MIL-R-21607 D (August 5, 1976), entitled “Resins, Polyester, Low Pressure Laminating, Fire-retardant.””
- Listed in 46 CFR 164.018-5(8)
Incorporated into this subpart; the listing names no sections.
How to read it
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A free or purchased copy may not be the edition the CFR names; check it against the edition above. Every incorporated standard can also be inspected at the National Archives (NARA) and at the agency named in the section that lists it.
MIL-R-21607 is copyrighted by its publisher; RegKnot shows its title and the editions the CFR names, not its text. Read from the eCFR's incorporation-by-reference sections, current as of October 26, 2026. The regulation text governs. All standards the CFR requires.