National Stock Number
Close Tolerance Screw — Screws (FSC 5305) · Part No. HT4020-4-8
| National Stock Number | 5305-01-029-6376 |
|---|---|
| Item name | Close Tolerance Screw |
| Part number (commercial reference) | HT4020-4-8 |
| Alternate references | ST3M652C4-8D; 11925C4-8D; CHT4020-4-8 |
| Unit of issue | EA |
| NIIN | 010296376 |
| 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) | $10.52 |
| 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 close tolerance screw. Confirm controlling dimensions against your drawing or standard sheet before ordering.
| Fastener Length | 0.952 Inches Minimum And 0.999 Inches Maximum |
|---|---|
| Head Style | Flat Countersunk Undercut |
| Material | Steel Comp Xm-13 Overall |
| Nominal Thread Diameter | 0.250 Inches |
| Surface Treatment | Passivate Overall |
| Thread Class | 3A |
| Thread Quantity Per Inch | 28 |
| Thread Series Designator | Unjf |
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 2,357 items we currently stock in FSC 5305 (Screws), published unit prices run from $0.03 to $14,752.17. At $10.52, this item sits below 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 5305-01-029-6376 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). Turkey is a NATO ally and a normal-trade-relations partner of the United States, and Turkish-origin end items are eligible for a wide range of U.S. federal and DLA procurements.
TAA note: Turkey is not a Trade Agreements Act (TAA) designated country, so these items are generally not eligible for TAA-covered solicitations. They are offerable under the Buy American Act and many non-TAA DLA buys. 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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