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Hexagon Head Cap Screw — Screws (FSC 5305) · Part No. 0.250-20UNRC-3AX0.500LG NICU
| National Stock Number | 5305-01-526-9147 |
|---|---|
| Item name | Hexagon Head Cap Screw |
| Part number (commercial reference) | 0.250-20UNRC-3AX0.500LG NICU |
| Alternate references | G545-4102-40 |
| Unit of issue | EA |
| NIIN | 015269147 |
| NIIN assigned by | United States (NCB code 01) |
| Federal Supply Class (FSC) | 5305 — Screws |
| Federal Supply Group (FSG) | 53 — Hardware and Abrasives |
| Unit price (USD) | $47.98 |
| 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 hexagon head cap screw. Confirm controlling dimensions against your drawing or standard sheet before ordering.
| Thread Series Designator | Unrc |
|---|---|
| Nominal Thread Diameter | 0.250 Inches |
| Thread Quantity Per Inch | 20 |
| Thread Class | 3A |
| Material | Nickel Alloy 400 Overall |
| Head Style | Button |
Externally threaded fasteners designed to be turned to assemble or adjust parts, including machine screws, cap screws, socket-head cap screws, set screws, self-tapping and thread-forming screws. This is the largest single class in the U.S. supply system and covers a vast range of thread sizes, drive types, head styles, and materials.
Price in context. Across the 2,442 items we currently stock in FSC 5305 (Screws), published unit prices run from $0.03 to $14,752.17. At $47.98, this item sits well above the class median of $10.52 — typical of assemblies and higher-value line items in this class.
Typical applications. Structural and panel assembly, equipment enclosures, brackets, access covers, and virtually every mechanical assembly across ground vehicles, aircraft, ships, and support equipment.
Applicable standards. ASME B18.3 / B18.6.3, MIL-DTL / NASM / MS and AN series, ISO metric threads; common materials include carbon and alloy steel, 300/400-series stainless, and A2/A4 stainless per ISO 3506.
NSN 5305-01-526-9147 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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