# DIBBS #SPE7M3-27-T-0540

DLA solicitation for three MS51888-04 tube-fitting locknuts

**Posted:** October 21, 2026
**Respond By:** November 02, 2026
**Identifier:** SPE7M3-27-T-0540
**NAICS:** 423710, 423840

The Defense Logistics Agency is seeking three Mil-Spec tube-fitting locknuts for its Weapons Support Fluid Handling Division.
- **Government buyer:** Defense Logistics Agency (DLA), DLA Weapons Support, Fluid Handling Division; buyer contact: William Cain.
- **OEMs and vendors:** No manufacturer, OEM, or supplying vendor is identified in the provided materials.
- **Product requested:** 3 each of a tube-fitting locknut, NSN 4730-01-691-7947 (also shown as 4730016917947), part piece number MS51888-04.
- **Technical requirements:** Manufactured in accordance with MS51888B, with MIL-DTL-18866K(1) cited as a reference specification.
- **Delivery and acceptance:** One-time supply delivery, required 20 days after order; destination inspection and acceptance are required.
- **Packaging:** DLA packaging requirements and ASTM D3951 apply.

### Description

LOCKNUT, TUBE FITTING (QTY: 3, NSN: 4730-01-691-7947 Mil-Spec, Purchase Request: 7018659874)

[View original listing](https://www.dibbs.bsm.dla.mil/rfq/rfqrec.aspx?sn=SPE7M327T0540)