31--BEARING,BALL,ANNULA

Quick Summary

The Department of the Navy / NAVSUP Weapon Systems Support Mechanicsburg is soliciting proposals for the manufacture and supply of Annular Ball Bearings (NSN: 3HD 3110 009873721NT). This requirement is for a commercial item, designated as M17931-G025, and is subject to MIL-DTL-17931F Military Specification for quiet operation. Proposals are due by April 13, 2026, 8:30 PM EDT.

Scope of Work

This contract requires the manufacture and supply of Annular Ball Bearings, specifically M17931-G025, adhering to MIL-DTL-17931F Military Specification for quiet operation and other referenced documents. Key requirements include:

• Source Control: Only Government-approved sources will be considered. New suppliers must undergo extensive qualification and testing, including "QTP-MIL-B-17931" for precision ball bearings, with final approval by NAVSEA.
• Quality Assurance: Contractors are responsible for inspection and maintaining an inspection/quality system acceptable to the Government, in accordance with MIL-I-45208 or ISO 9001/9002. Quality conformance inspection must follow MIL-DTL-17931F Table VI and MIL-STD-105.
• Production Lot Testing (PLT): Required, with Verification Inspection and approval by the Government at Naval Surface Warfare Center, Carderock Division.
• Mercury-Free: All supplied material must be free from metallic mercury and contamination for use on submarines/surface ships.
• Shelf Life: Bearings have a shelf life code X (type 2, extendable, 60 months), with MIL-B-17931E bearings labeled for 10 years (120 months). Extensions require program management approval.

Contract & Timeline

• Type: Solicitation (bilateral award requiring contractor acceptance)
• Set-Aside: Total Small Business
• Product Service Code: 3110 - Bearings, Antifriction, Unmounted
• Response Due: April 13, 2026, 8:30 PM EDT
• Published: March 4, 2026
• Evaluation: NAVSUP WSS Mechanicsburg will consider past performance in accordance with FAR 13.106(a)(2). The contract will be DO certified for national defense under the Defense Priorities and Allocations System (DPAS).

Additional Notes

• Contact: For any questions or concerns regarding the amendment or requirement, contact Abigail Hurlbut via email at abigail.r.hurlbut.civ@us.navy.mil.
• Drawings: If drawings are included, access must be requested on the SAM.gov individual solicitation page, followed by an email to the listed POC.
• Amendments: This solicitation has been amended to change the closing date and to clarify that the Annular Ball Bearing is a commercial item, with corresponding clause additions/removals. All other terms and conditions remain unchanged.