Buy NSN Parts
Pin-Rivet — Rivets (FSC 5320) · Part No. ST3M578D4-9
| National Stock Number | 5320-01-477-5631 |
|---|---|
| Item name | Pin-Rivet |
| Part number (commercial reference) | ST3M578D4-9 |
| Alternate references | HLT631YC-8-9; HLT631YB-8-9; HP4758D4-9; ST3M758D4-9 |
| Unit of issue | EA |
| NIIN | 014775631 |
| NIIN assigned by | United States (NCB code 01) |
| Federal Supply Class (FSC) | 5320 — Rivets |
| Federal Supply Group (FSG) | 53 — Hardware and Abrasives |
| Unit price (USD) | $3.51 |
| 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 pin-rivet. Confirm controlling dimensions against your drawing or standard sheet before ordering.
| Fastener Length | 0.948 Inches Minimum And 0.968 Inches Maximum |
|---|---|
| Head Style | Flush Countersunk |
| Material | Steel Comp Xm-13 Overall |
| Thread Series Designator | Unjf |
| Thread Quantity Per Inch | 28 |
| Thread Class | 3A |
Permanent mechanical fasteners installed by deforming, including solid, blind (pop), and structural rivets in a range of head styles.
Price in context. Across the 672 items we currently stock in FSC 5320 (Rivets), published unit prices run from $0.18 to $900.00. At $3.51, this item sits below the class median of $6.13.
Stock activity. This item has appeared once in our supplier stock feed, most recently listed 2026-08-06, with a lot quantity of 249 units. Listing activity is a practical signal of ongoing availability; confirm current stock and firm pricing on your quote.
Typical applications. Aircraft skin and structural assembly, sheet-metal fabrication, and permanent joints where welding is unsuitable.
Applicable standards. MS20426/MS20470 and NAS series, ISO/DIN blind rivets; aluminum, monel, steel, and stainless.
NSN 5320-01-477-5631 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.
MS20426AD4-16D
NAS9307M-4-01
CR2664-5-02
ST3M758T08-9
HL97-4
EN2134NP6
EN1182ND8
EN1282ND8
HL87-18
NAS1921B04-07
HL11VAZ-5-11
HL75DU-5A
