Coronet $35M Mk 152 Hardware Award: NSWC Indian Head Energetics Line Sustainment

Technical Summary

Naval Surface Warfare Center (NSWC), Indian Head Division, Indian Head, Maryland, awarded Coronet Machinery Corp., Bethel, Connecticut, a firm-fixed-price contract modification valued at USD 35,259,100 on 30 April 2026 for the manufacturing of Mark 152 bases and cases hardware. Place of performance is Bethel, Connecticut. The contract reference is N0017424D0003 and the award is set against a small-business prime contractor, sustaining a niche US machining base for Navy energetics componentry.

NSWC Indian Head is the United States Navy's principal Energetics Center. Its mission portfolio covers propellants, explosives, pyrotechnics and reactive material systems for the entire fleet, and includes design authority and Production Engineering Centre responsibility for a wide span of Mk-numbered ordnance items, propulsion sub-assemblies and demolition stores. A multi-year, multi-tens-of-millions hardware machining award is consistent with steady-state stockpile sustainment of an operationally relevant Navy munition.

Analysis of Effects

"Bases and cases" terminology in NSWC Indian Head awards typically refers to the metallic body components of a munition family — the structural housing into which energetics fill, fuze well, booster cup or initiator are subsequently assembled. Indian Head retains design authority for the energetics configuration of the round; small-business primes such as Coronet Machinery handle precision-machined steel componentry to the centre's drawings and acceptance criteria. The financial profile (USD 35M modification on a 2024-vintage indefinite-delivery contract) is consistent with steady-rate replenishment, not a surge programme.

For UK readers: NSWC Indian Head is the closest US analogue to the former DERA / DSTL Energetics work strands now distributed across Defence Equipment & Support (DE&S) Weapons Operating Centre and DSTL Salisbury energetics teams. Industrial-base sustainment awards of this character — small-business, niche machining, NSWC-specified — are precisely the kind of contract UK MOD has struggled to keep flowing through the SME tier in WOME-relevant categories since the closure of ROF Glascoed-equivalent machining lines.

Personnel and Safety Considerations

Empty Mark 152 bases and cases (pre-fill, pre-assembly) are not Hazard Division (HD) classified energetic items at the machining stage; they are inert metal componentry until energetics are loaded by NSWC Indian Head or a downstream Load, Assemble, Pack (LAP) facility. Once filled, hazard classification, NEQ, Compatibility Group (CG), Inhabited Building Distance (IBD), Inter-magazine Distance (IMD) and Public Traffic Route Distance (PTRD) are governed by the assigned Joint Hazard Classification System (JHCS) record and, for UK-domain stockpiling, DSA 03.OME with relevant Munitions Safety Case provisions. EOD and Ammunition Technical (AT) personnel encountering filled rounds in any context should treat the Mk 152 designator as ambiguous without a corroborating drawing, lot number and stencil identification — the Mark/Mod system has been used across multiple Navy ordnance families.

Data Gaps

DATA GAP: Mk 152 specific weapon system / parent munition family is not disclosed in the contract notice; multiple Navy ordnance families have used the Mk 152 designator in different Mod numbers across the past four decades. DATA GAP: Quantity of bases and cases is not disclosed. DATA GAP: Final assembly facility and intended end-item are not disclosed. DATA GAP: HD/CG of completed round (not within scope of this machining contract) cannot be derived from open sources. Personnel should not infer terminal-effect or storage parameters from this announcement; refer to Naval Ammunition Logistics Code (NALC) records and JHCS entries for the assigned end-item only.

AI-assisted technical assessment based on open-source material. Not a formal intelligence product. Source rating: A2 (US DoW daily contracts notice, confirmed). Mark 152 designator interpretation: F6 (cannot be judged without drawing reference).