# DIBBS #SPE7M2-27-T-0808

DLA requests 1,812 Mil-Spec straight tube-to-boss adapters

**Posted:** November 06, 2026
**Respond By:** November 16, 2026
**Identifier:** SPE7M2-27-T-0808
**NAICS:** 332919

The Defense Logistics Agency is seeking a large-quantity purchase of a Mil-Spec tube-to-boss adapter for its Nuclear Reactor Program.
- **Government buyer:** Defense Logistics Agency (DLA), Weapons Support, Nuclear Reactor Program; contact identified as David Larsen.
- **Requirement:** 1,812 corrosion-resistant-steel straight tube-to-boss adapters, NSN 4730-00-411-5597, part number **MS51843-5SSB**.
- **Configuration:** 0.375-inch outside-diameter first end with 9/16 UNF threads and a 12-degree seat; 3/8-inch threaded male tube/bulkhead-boss second end with 9/16 UNF threads and a ferrule sleeve. Sleeve style B is required.
- **Assembly and standards:** Each assembly must include a fitting body, nut, sleeve, and O-ring, meet marking requirements, and comply with MS51843E and MIL-DTL-18866K.
- **Delivery and inspection:** Delivery is required within 160 days after order. FOB origin; destination inspection and acceptance.
- **OEMs and vendors:** No manufacturer, OEM, or approved source vendor is identified in the provided information.

### Description

ADAPTER, STRAIGHT, TUBE (QTY: 1812, NSN: 4730-00-411-5597 Mil-Spec, Purchase Request: 7018911191)

[View original listing](https://www.dibbs.bsm.dla.mil/rfq/rfqrec.aspx?sn=SPE7M227T0808)