# DIBBS #SPE7M2-27-T-0507

DLA solicitation for 620 MS51839-5SS tube-to-boss elbows

**Posted:** October 29, 2026
**Respond By:** November 09, 2026
**Identifier:** SPE7M2-27-T-0507
**NAICS:** 332919

DLA Weapons Support is soliciting 620 critical-application tube-to-boss elbows for its Nuclear Reactor Program.
- **Buyer:** Defense Logistics Agency (DLA), DLA Weapons Support, Nuclear Reactor Program; contact named in the attachment: David Larsen.
- **Solicitation:** SPE7M2-27-T-0507, issued through DLA's DIBBS procurement portal.
- **Product:** 620 ELBOW, TUBE TO BOSS fittings, NSN 4730-01-092-8203; specified part piece number **MS51839-5SS**.
  - Must conform to MS51839E and MIL-DTL-18866K specifications and is identified as a critical application item.
- **Delivery and acceptance:** Delivery is required within 105 days after award, FOB Origin; inspection and acceptance are at destination.
- **OEMs and vendors:** No product OEM, manufacturer, or reseller is identified in the provided materials.

### Description

ELBOW, TUBE TO BOSS (QTY: 620, NSN: 4730-01-092-8203 Mil-Spec, Purchase Request: 7018907630)

[View original listing](https://www.dibbs.bsm.dla.mil/rfq/rfqrec.aspx?sn=SPE7M227T0507)