# DIBBS #SPE7M4-26-T-453Z

Three RTX rigid shaft couplings for a critical aircraft-engine application

**Posted:** September 29, 2026
**Respond By:** October 09, 2026
**Identifier:** SPE7M4-26-T-453Z
**NAICS:** 336412, 333613

DLA Land and Maritime is requesting three rigid shaft couplings for a critical aircraft-engine application.
- **Government buyer:** Defense Logistics Agency (DLA), DLA Land and Maritime, Fluid Handling Division; contact listed as Blake Tushar.
- **OEMs and vendors:** **RTX Corporation** is the approved source for part number 500851. **Pratt & Whitney** is identified as the TF-33 engine manufacturer.
- **Product requested:** Three rigid shaft couplings, NSN 3010-00-019-2219; RTX part number 500851. The coupling is identified as a gearbox coupling for a Pratt & Whitney TF-33 engine used on the C-141 aircraft.
- **Notable requirements:** The item is an Air Force-designated Critical Safety Item. Origin inspection and acceptance, military packaging, and marking requirements apply.
- **Delivery:** Required within 256 days after order.

### Description

COUPLING, SHAFT, RIGID (QTY: 3, NSN: 3010-00-019-2219, Purchase Request: 7018563709)
  Approved Sources:
  - CAGE: 52661, Part No: 500851, Company: RTX CORPORATION
  - CAGE: 77445, Part No: 500851, Company: RTX CORPORATION
 

[View original listing](https://www.dibbs.bsm.dla.mil/rfq/rfqrec.aspx?sn=SPE7M426T453Z)