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Retaining Ring — Fastening Devices (FSC 5325) · Part No. MS16633-4031
| National Stock Number | 5325-00-878-1908 |
|---|---|
| Item name | Retaining Ring |
| Part number (commercial reference) | MS16633-4031 |
| Alternate references | MS16633-4031-X5133-31H; 5133-31-H; 1000-X31-SS2; X5133-31H |
| Unit of issue | EA |
| NIIN | 008781908 |
| NIIN assigned by | United States (NCB code 00) |
| Federal Supply Class (FSC) | 5325 — Fastening Devices |
| Federal Supply Group (FSG) | 53 — Hardware and Abrasives |
| Unit price (USD) | $0.35 |
| Country of origin | Türkiye (Turkey) |
| Lead time | Within 90 days of order |
| Minimum order | May apply — confirm on quote |
| Documentation | Source documentation provided on all orders |
Characteristics decoded from the federal cataloging record for this retaining ring. Confirm controlling dimensions against your drawing or standard sheet before ordering.
| Material | Steel Comp 632 |
|---|---|
| Inside Diameter | 0.243 Inches Nominal |
| Surface Treatment | Passivate |
Quick-release and specialty fastening hardware including grommets, eyelets, snap fasteners, turnlock (Dzus/Camloc-type) fasteners, and retaining hardware.
Price in context. Across the 159 items we currently stock in FSC 5325 (Fastening Devices), published unit prices run from $0.18 to $1,752.30. At $0.35, this item sits well below the class median of $8.76 — commodity hardware usually bought in volume.
Typical applications. Access panels, quick-release covers, and cover/closure assemblies requiring frequent removal.
Applicable standards. MS and NAS series turnlock and grommet standards.
NSN 5325-00-878-1908 is supplied by Quick Brown Fox Solutions as a stock resale item. For custom-manufactured or prototype parts to your print, see our U.S.-based CNC machining services.
Country of origin: Türkiye (Turkey) — a DFARS qualifying country. Türkiye is a NATO ally with a reciprocal defense procurement agreement with the U.S. Department of Defense, making it a qualifying country under DFARS 225.003. On DoD and DLA solicitations, qualifying-country end products are evaluated without Buy American price penalties — they compete on par with domestic product — and DoD trade-agreements clauses (DFARS 252.225-7021) expressly accept qualifying-country end products.
Dollar thresholds. The Trade Agreements Act only applies to supply contracts at or above $174,000 (the WTO GPA threshold effective March 2026); below that — where the vast majority of hardware buys fall — the TAA does not apply at all. The main exclusion is civilian-agency solicitations at or above that threshold that restrict award to TAA designated-country products (Türkiye is not TAA-designated). Buyers are responsible for confirming the origin requirements of their specific solicitation.
Full country-of-origin and source documentation is provided with every order. Fulfillment within 90 days of order. Minimum order may apply.
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