# DIBBS #SPE4A6-27-T-0171

DLA solicitation for 80 critical-safety annular ball bearings

**Posted:** October 02, 2026
**Respond By:** October 09, 2026
**Identifier:** SPE4A6-27-T-0171
**NAICS:** 332991

DLA Weapons Support is seeking source-controlled annular ball bearings for an Air Force critical safety application.
- **Government buyer:** Defense Logistics Agency (DLA), DLA Weapons Support, ASC Commodities Division; contact listed as Rashall Ward.
- **Requirement:** 80 annular ball bearings, NSN 3110-00-689-7639, drawing/part number 446563, under solicitation SPE4A6-27-T-0171.
- **OEMs and approved sources:** **Pratt & Whitney**, **United Technologies Corp**, **MPB Corp**, **Timken**, and **RTX Corporation** are identified in the source and part information. MPB and RTX part identifiers include P/N 328373; RTX is also associated with P/N 446563.
- **Notable requirements:** The bearing is source-controlled and designated a critical safety item. Three units are required for government first-article testing within 180 days of award; the relationship of these test units to the 80-unit quantity is not specified. Bearings must meet stated U.S., outlying-area, or Canadian origin and component-cost restrictions.
- **Delivery:** FOB origin, with a stated delivery requirement of 485 days. No service period is specified.

### Description

GOVERNMENT FIRST ARTIC (QTY: Qty - See Solicitation, NSN: 0001S00000052, Purchase Request: 7017917115)
BEARING, BALL, ANNULAR (QTY: 80, NSN: 3110-00-689-7639, Purchase Request: 7017917115)
  Approved Sources:
  - CAGE: 40920, Part No: 328373, Company: MPB CORP
  - CAGE: 52661, Part No: 446563, Company: RTX CORPORATION
  - CAGE: 77445, Part No: 328373, Company: RTX CORPORATION
 

[View original listing](https://www.dibbs.bsm.dla.mil/rfq/rfqrec.aspx?sn=SPE4A627T0171)