STEM 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 / NAVSUP WSS Mechanicsburg is seeking proposals for a STEM Assembly for an 8-inch Ball Valve. This critical component is designated as SPECIAL EMPHASIS material for crucial shipboard systems, requiring stringent quality and control procedures. This opportunity is a Total Small Business Set-Aside. Proposals are due April 1, 2026, 8:30 PM EDT.
Scope of Work
The requirement is for a complete Stem Assembly, including the Stem (Piece 23), Stem Retaining Nut (Piece 24), and Bushing (Piece 25), in accordance with Naval Ship Systems Command Drawing 803-4385058 and DRN 4385058-C4, and General Notes Drawing 803-4384678 and DRN 4384678-C6. Specific material requirements include ASTM-B505 for the Stem Retaining Nut and QQ-N-286 for the Stem. Extensive testing certifications are mandated, covering Annealing, Age Hardening, Ultrasonic Inspection, and Dye Penetrant Inspection. Thread inspection must comply with FED-STD-H28 series, and O-ring grooves require specific inspection. All materials must be mercury-free.
Contract & Timeline
- Type: Solicitation
- Set-Aside: Total Small Business
- Response Due: April 1, 2026, 8:30 PM EDT
- Published: March 25, 2026
- Solicitation Date: Will be shortened once drawings are posted on SAM.gov.
- Rating: DX rated order under the Defense Priorities and Allocations System (DPAS).
Quality & Compliance
Given the "SPECIAL EMPHASIS material" designation, this contract demands a robust quality system. Contractors must maintain a quality system in accordance with ISO-9001 (or MIL-I-45208) and calibration systems per ISO-10012 or ANSI-Z540.3. Key requirements include comprehensive traceability from material to certification test reports, detailed material certification (DI-MISC-81020), and adherence to electronic signature protocols. Government Quality Assurance (DCMA QAR) at source is required, and contractors must manage subcontractor quality. Waivers, deviations, and Engineering Change Proposals (ECPs) require Contracting Officer approval.
Evaluation
Offers will be evaluated with consideration for past performance, in accordance with FAR 13.106(a)(2) and DFARS 252.213-7000.
Additional Notes
- Drawing Access: Access to drawings must be requested on the SAM.gov solicitation page, followed by an email to the Primary POC.
- 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. Material cannot be shipped prior to acceptance.
- Contact: SCOTT.R.YOUNGBLOOD2.CIV@US.NAVY.MIL, 717-605-2379.