31--BEARING,BALL,ANNULA- AND SIMILAR REPLACEMENT PARTS
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, is soliciting proposals for BEARING,BALL,ANNULA- AND SIMILAR REPLACEMENT PARTS. This is a Total Small Business Set-Aside opportunity for precision ball bearings for low noise operation, adhering to MIL-DTL-17931F Military Specification. Proposals are due by June 29, 2026.
Scope of Work
This solicitation seeks qualified sources for the manufacture and supply of BEARING,BALL,ANNULA (Standard Part Number M17931-C017) and similar replacement parts. The bearings must meet the requirements of MIL-DTL-17931F for quiet operation, along with other referenced documents. The scope includes adherence to specific manufacturing, design, and marking standards (e.g., MIL-STD-129).
Key Requirements
- Source Control Item: Only Government-approved sources will be considered. New suppliers must undergo extensive qualification and testing by the engineering activity prior to submitting an offer. Proof of prior approval or qualification data is required for evaluation.
- Qualification: Items must contain components manufactured by a Government Qualified Products List (QPL) supplier. Vendors must be qualified to supply precision ball bearings using QTP-MIL-B-17931.
- Mercury-Free: All materials supplied must be free from metallic mercury and contamination, as they are intended for use on submarines/surface ships. Written approval from the PCO is required if mercury is a functional part.
- Testing: Requires both First Article Testing (FAT) and Production Lot Testing (PLT). Contractors are responsible for Quality Conformance Inspection, and Government Verification Inspection will be conducted at Naval Surface Warfare Center, Carderock Division.
- Packaging: Preservation, packaging, packing, and marking must comply with MIL-STD 2073. Matched bearing pairs require specific packaging per MIL-DTL-197 method 40B, marked "MATCHED SET, DO NOT SEPARATE."
- Shelf Life: MIL-DTL-17931F bearings should be labeled for a 10-year (120 month) shelf life, with a shelf life code X (type 2, extendable, 60 months).
Contract & Timeline
- Type: Solicitation, resulting in a bilateral award requiring contractor acceptance.
- Set-Aside: Total Small Business
- Product Service Code: 3110 (Bearings, Antifriction, Unmounted)
- Response Due: June 29, 2026, at 8:30 PM ET
- Published: May 28, 2026
- DPAS Rating: DO certified for national defense.
Evaluation Factors
NAVSUP WSS Mechanicsburg will consider past performance in the evaluation of offers, in accordance with FAR 13.106(a)(2). Evaluation of First Article Testing is also a factor.
Important Notes
Access to drawings must be requested on the SAM.gov Contract Opportunities page, followed by an email to the Point of Contact.