# DIBBS #SPE7M2-27-T-0558

DLA Request for 1,256 Stainless-Steel Tube-to-Boss Adapters

**Posted:** October 30, 2026
**Respond By:** November 09, 2026
**Identifier:** SPE7M2-27-T-0558
**NAICS:** 332919

The Defense Logistics Agency is seeking stainless-steel adapters for its Nuclear Reactor Program.
- **Government buyer:** Defense Logistics Agency (DLA), DLA Weapons Support, Nuclear Reactor Program; buyer contact: David Larsen.
- **Request:** 1,256 straight tube-to-boss adapters, NSN 4730-00-683-8586.
- **Assembly requirements:** Fitting body MS51525B6S, nut MS51531B6S, sleeve MS51533B6S, and O-ring MS28778-6. The adapter has a 3/8-inch OD first end and a 9/16-18 UNF second end, and must meet the applicable MS51525 configuration.
- **Marking and delivery:** Marking must comply with the latest revision of MIL-F-18866, paragraph 3.7. Delivery is due 206 days after award, FOB origin, with inspection and acceptance at origin.
- **OEMs and vendors:** No product manufacturer, OEM, or supplier is identified in the provided materials.

### Description

ADAPTER, STRAIGHT, TUBE (QTY: 1256, NSN: 4730-00-683-8586 Mil-Spec, Purchase Request: 7018930641)

[View original listing](https://www.dibbs.bsm.dla.mil/rfq/rfqrec.aspx?sn=SPE7M227T0558)