STEM DISC ASSEMBLY
Overview
Buyer
Place of Performance
NAICS
PSC
Set Aside
Original Source
Timeline
Qualification Details
Fit reasons
- NAICS alignment with historical contract wins in similar service areas.
- Scope strongly matches core technical capabilities and delivery model.
Risks
- Past performance thresholds may require one additional teaming partner.
- Potential clarification needed on staffing minimums before bid/no-bid.
Next steps
Validate eligibility requirements, assign capture owner, and schedule partner outreach to confirm teaming strategy before submission planning.
Quick Summary
The Department of the Navy, specifically NAVSUP Weapon Systems Support Mechanicsburg, has issued a Solicitation for a STEM DISC ASSEMBLY. This opportunity is designated as a Total Small Business Set-Aside. The assembly is classified as SPECIAL EMPHASIS material (Level I, Scope of Certification, or Quality Assured) for crucial shipboard systems, requiring stringent quality control and traceability. Proposals are due by July 27, 2026.
Scope of Work
This solicitation is for a "Complete stem and disk assembly .50 stop check, item no. 92," to be manufactured in accordance with NAVSEA drawing 803-6397434 (part number 803-6397434-X23XX1-092) and Naval Sea Systems Command General Notes drawing 803-5959311. The assembly includes specific material requirements for the stem and disk (MIL-DTL-24252 compositions). Key requirements include:
- No weld repair on MIL-DTL-24252 material.
- Cleaning per MIL-STD-1622.
- Ultrasonic Inspection for stem and disk per MIL-STD-2132 and MIL-DTL-24252.
- Internal threads must be cut, not cold formed, with inspection per FED-STD-H28 series.
- Compliance with NAVSEA SS800-AG-MAN-010/P-9290 for non-metallic materials.
Quality Assurance & Traceability
Offerors must have an acceptable Quality Control Manual. The contract requires a quality system in accordance with ISO-9001 (with ISO-10012 or ANSI-Z540.3 with ISO-17025) or an acceptable alternate of MIL-I-45208 (with MIL-STD-45662).
- Government Quality Assurance (GQA) at source is required.
- Traceability and Certification: Strict traceability from material to certification test reports (Objective Quality Evidence - OQE) is mandatory for Level I/SUBSAFE systems. Material must be marked with a unique traceability number.
- Certifications: A Certificate of Compliance for Special Emphasis Material is required, detailing contractor information, contract number, NSN, and a statement of full compliance. Quantitative chemical and mechanical analysis is required for certified parts.
- WAWF Submission: Certification data must be submitted via Wide Area Work Flow (WAWF) to Portsmouth Naval Shipyard (Ship to N50286, Inspect by N39040, Accept by N39040) with email notification to PORT_PTNH_WAWF_NOTIFICATION@NAVY.MIL. No material is to be shipped prior to acceptance.
Contract Details & Timeline
- Opportunity Type: Solicitation
- Set-Aside: Total Small Business
- Product Service Code: 4820 (Valves, Nonpowered)
- Published Date: June 12, 2026
- Response Due Date: July 27, 2026, 8:30 PM EDT
- Delivery Schedule: Certification Data CDRLs 20 days prior to scheduled delivery. Final material delivery 365 days after the effective date of the resulting contract. Early and incremental delivery is acceptable.
- Contract Type: This will be a DO rated order certified for national defense use under the Defense Priorities and Allocations System (DPAS).
Submission & Evaluation
NAVSUP WSS Mechanicsburg will consider past performance in the evaluation of offers. Offerors must provide a copy of their current documented quality system procedures to the PCO prior to award, unless already on file. Access to drawings, if included, requires a request on SAM.gov and an email to the Primary POC.
Additional Notes
Portsmouth Naval Shipyard's DODAAC has changed to N50286. Waivers and deviations require PCO approval and submission to the NAVSUP WSS Contracting Specialist via email.