# DIBBS #SPE4A0-26-T-5062

DLA Aviation request for one source-controlled flat washer

**Posted:** September 30, 2026
**Respond By:** October 07, 2026
**Identifier:** SPE4A0-26-T-5062
**NAICS:** 332722

DLA Aviation is seeking one source-controlled flat washer for its Aviation Supply Chain ESOC Buys office.
- **Government buyer:** Defense Logistics Agency (DLA), DLA Aviation, Aviation Supply Chain ESOC Buys; buyer contact: Danita Davis.
- **OEMs and approved sources:** **Ontic Engineering & Manufacturing, Inc.** and **Hamilton Sundstrand Corporation**; both are listed for part number 589139-25.
- **Product requested:** One flat washer, NSN 5310-00-088-6880 (CLIN 0001), part number 589139-25.
- **Notable requirements:** The washer is designated a critical application item, and the technical data is proprietary or insufficient for competitive procurement. Delivery is required within five days after order; FOB origin, with destination inspection and acceptance.

### Description

WASHER, FLAT (QTY: 1, NSN: 5310-00-088-6880, Purchase Request: 7018491668)
  Approved Sources:
  - CAGE: 45934, Part No: 589139-25, Company: ONTIC ENGINEERING & MANUFACTURING,
  - CAGE: 73030, Part No: 589139-25, Company: HAMILTON SUNDSTRAND CORPORATION
 

[View original listing](https://www.dibbs.bsm.dla.mil/rfq/rfqrec.aspx?sn=SPE4A026T5062)