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Hexagon Head Cap Screw — Screws (FSC 5305) · Part No. B1821BH100C225N
| National Stock Number | 5305-00-929-6339 |
|---|---|
| Item name | Hexagon Head Cap Screw |
| Part number (commercial reference) | B1821BH100C225N |
| Alternate references | MS90728-231; MS90725-231; FF-S-85; 1741AS383-170; 01070-0223REVB PIECE 161; E103972 NO 61 |
| Unit of issue | EA |
| NIIN | 009296339 |
| NIIN assigned by | United States (NCB code 00) |
| Federal Supply Class (FSC) | 5305 — Screws |
| Federal Supply Group (FSG) | 53 — Hardware and Abrasives |
| Unit price (USD) | $11.83 |
| 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.
| Fastener Length | 2.062 Inches Minimum And 2.250 Inches Maximum |
|---|---|
| Head Style | Hexagon |
| Material | Steel Overall |
| Nominal Thread Diameter | 1.000 Inches |
| Surface Treatment | Zinc Overall And Chromate Overall |
| Thread Class | 2A |
| Thread Quantity Per Inch | 8 |
| Thread Series Designator | Unc |
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 $11.83, this item sits above the class median of $10.52.
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 5305-00-929-6339 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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