Coupling Nuts — 3/8-16 · Stainless 18-8 (304) · Box of 25
Long hex couplers for joining threaded rod and studs.
● In stock — typically ships within 1–2 business days
| Order qty (packs) | Per pack | Per piece | Save |
|---|---|---|---|
| 1–4 packs | $17.99 | $0.72 | — |
| 5–19 packs | $16.55 | $0.66 | −8% |
| 20+ packs | $15.29 | $0.61 | −15% |
General-purpose stainless (304/A2). Good corrosion + non-magnetic.
Active tier: 1–4 packs
SKU: IH-COUPLI-0375-S8-B25 · MPN: IRX-CN0375S8B25
Pack: 25 pieces · Ship weight: 1.63 lb · Brand: IronHex Fastener Co
Shipping is calculated by order amount and destination at checkout. USA-focused shipping with international options available. See shipping tiers →
Questions? Call +1 702-509-4651 or email sales@ironhexfastener.com
Need bulk pricing beyond tier 3?
Contractor or OEM volumes? Submit a BOM and we'll respond with line-item pricing within 4 business hours.
Request Bulk QuoteProduct description
Coupling Nuts — Long hex couplers for joining threaded rod and studs. Manufactured to Long hex coupler — ASME B18.2.2. Each unit is supplied as a factory-sealed package containing the exact piece count shown; no break-units, no estimated counts.
Finish — Stainless 18-8 (304). General-purpose stainless (304/A2). Good corrosion + non-magnetic. Use the finish that matches your environment: zinc for dry indoor work, hot-dip galvanized for outdoor and treated-lumber exposure, 18-8 stainless for general corrosion resistance, and 316 stainless for marine, coastal, and chemical service.
This variant. Size 3/8-16 · Box of 25 (25 pieces) · 1.63 lb ship weight · SKU IH-COUPLI-0375-S8-B25 · MPN IRX-CN0375S8B25. Price shown is per package and updates automatically as your order quantity crosses each tier break.
Typical applications. Hanger systems, equipment suspension, anchor extensions, and threaded-rod splicing for mechanical, electrical, and plumbing trades.
How to order. Select finish, exact size, and pack on this page. Quantity is in packs — per-piece cost is shown for reference. Public checkout accepts PayPal or Wire Transfer. Need volumes beyond tier 3 or a mixed BOM? Use Request Bulk Quote.