Description

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CNC-turned metal threaded components engineered for leak-free static and dynamic sealing in industrial fluid and gas circuits. Produced from bar stock via multi-axis CNC turning centers, eliminating micro-void porosity common in castings.

Core Offering: Straight connectors, adapters, plugs, reducers, and custom geometry per print.

Size Range: Diameter 4 mm to diameter 65 mm bar stock feed.

Standard Compliance: ASME B1.20.1 (NPT), ISO 7-1 (BSPT), SAE J514/J1926 (UN/UNF).

CAD Support: Native STEP/IGES downloadable per standard SKU or generated per DFM review.

Technical Specifications

Parameter	Specification Standard / Range
Material Grades	Stainless Steel: ASTM A182 F316 / F316L, 303 Carbon Steel: 12L14, 1045, 4140 (quenched & tempered) Brass: C36000 Free-Cutting
Thread Standards	NPT, BSPT, BSPP (G-thread), UNF/UN, Metric (ISO)
Pressure Rating	Up to 6,000 PSI (414 bar) static (geometry-dependent)
Dimensional Tolerance	ISO 2768-mK / critical thread pitch diameter +/- 0.015 mm
Surface Finish	As-machined Ra <= 1.6 um ; Zinc-Nickel (Zn-Ni) 8-12 um (ASTM B841); Passivated per ASTM A967 (316L)
Heat Treatment	Case hardening or stress relief available upon request

Key Features

Full-Form CNC Threading: Single-point or multi-point insert threading with real-time tool wear compensation; zero torn flanks.

Single-Point Pitch Control: Single-point thread turning/milling on multi-axis CNC prevents pitch cumulative error on long-reach or complex adapter bodies.

Zero Porosity Bar Stock: Machined from forged or extruded round bars-no micro-voids, rated for high-cycle pulsation.

Chamfered Entry Leads: 30deg/45deg lead-in chamfers on male threads to prevent cross-threading during assembly.

Traceable Heat/Lot ID: Laser-etched batch code on hex flats for critical-service components.

Applications

Hydraulic Power Units (HPU): Manifold port adapters and gauge connectors.

Process Instrumentation: Pressure transmitter process connections and impulse line adapters.

Industrial Pneumatics: High-pressure valve block distribution rails.

Compressor Skids: Interstage cooling line threaded transitions.

Customization & Volume Terms

From Print to Part: Accept STEP, IGES, DXF, and PDF with GD&T.

MOQ & Prototyping:
• Prototype MOQ: 5 pcs (machined from bar stock, zero tooling/setup charge).
• Mass Production MOQ: 500 pcs per SKU (lower tiered pricing at 2,000+ / 10,000+ pcs).

Supply Chain Programs: Safety stock / Kanban holding agreements supported for contracted annual volume forecasts (call-off delivery within 48h).

Non-Standard Modifications: Special thread depths, reduced bore, integrated O-ring grooves, specific wrench flat sizes.

Prototyping Lead Time: 5-7 working days for CNC machined samples.

Quality Control

Incoming Material: PMI (Portable XRF) verification of alloy grade prior to sawing.

In-Process: First-article inspection (FAI) report with CMM measurement; operator self-check every 20 pieces.

Final Thread Verification: 100% GO / NO-GO working thread gauge inspection for pitch diameter, lead, and taper.

Documentation Pack: Dimensional inspection report, material test report (MTR EN 10204 3.1) supplied with shipment.

Manufacturing & Certifications

Machine Fleet: 18 CNC turning centers (sliding-head Swiss-type for <= 20 mm, fixed-head twin-turret for up to 65 mm).

Deburring: Thermal deburring or centrifugal micro-abrasive tumbling for internal cross-hole burrs.

System Certifications: ISO 9001:2015 certified quality management system.

Material Origin: Mills with PED 2014/68/EU material compliance (mills certs archived for 10 years).

Packaging, Compliance & Trade Transparency

Maritime Anti-Corrosion: Export-grade VCI (Volatile Corrosion Inhibitor) polyethylene bags + industrial silica gel desiccant packs inside sealed cartons for 30-45 day ocean freight protection.

Protection Caps: Heavy-duty plastic protective dust/thread caps fitted on all male/female ends.

Bulk Packaging: Heavy-duty double-wall corrugated cartons (max 20 kg per carton), heat-treated ISPM-15 wooden pallets.

Trade & Origin Transparency: Origin: China (ISO 9001 certified plant; export documentation pre-audited for anti-dumping/tariff compliance per destination). Incoterms: FOB, CIF, DDP. Export docs (COO, Form E/A, Commercial Invoice) pre-audited.

FAQ

Q: Can you supply MTRs for carbon steel fittings?

A: Yes, EN 10204 3.1 chemical and mechanical test reports are provided for all alloy/stainless and lot-tracked carbon steel orders.

Q: How do you prevent thread galling on stainless steel fittings?

A: Controlled surface roughness (Ra <= 1.6), optional anti-galling dry-film lubrication coating, or strict control of internal/external thread clearance class.

Q: Are components compliant with RoHS, REACH, and Conflict Minerals?

A: Yes, full compliance declarations (RoHS 3, REACH SVHC list, and CMRT conflict minerals reporting template) are issued upon request.

Q: Do you support consignment or buffer stock for recurring OEM orders?

A: Yes, vendor-managed inventory (VMI) or rolling safety stock programs can be established based on a signed 12-month rolling forecast agreement.

Interactive RFQ Checklist & Submission Guide

Interactive RFQ Form Block Specifications:

Drawing / CAD Dropzone: Drag & drop STEP / IGES / PDF with GD&T (Max 50MB) or select standard part number (ASME B1.20.1 1/4" NPT Male).

Material Grade Selector: Dropdown (316L, 12L14 Zn-Ni plated, Brass C36000, 4140 Q&T).

Volume / Schedule Input: Annual forecast / Lot quantity + Target delivery date or Kanban buffer flag.

Inspection Tier Toggle: [ Standard GO/NO-GO ] vs [ Full CMM + MTR 3.1 Package ].

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Precision Threaded Fittings