JJ Fastener
PRODUCTDouble End Stud Bolt ASTM A193 B7 Alloy Steel for Oil Gas Pipeline and Flange Connections
Standard:ASTM A193
Grade:B7
Material:Alloy Steel
DIRECT MILL FASTENER CATALOGUE
Threaded Rods & Stud Bolts Manufacturer
JJ Fastener manufactures and supplies complete industrial precision fastening systems — high-tensile structural bolts, hex nuts, machine screws, double-end studs, threaded rods, and foundation anchor bolts. Trusted across civil steel construction, automotive assembly, rail transit, offshore wind farms, and heavy industrial equipment.
MOQ and lead time vary by product and specification. Contact us for your exact requirement.
120,000 MTAnnual Capacity
350+Standards
15 DaysGlobal Dispatch
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5 CategoriesSHOWING 2 VERIFIED FASTENER SERIES|Direct Mill Stock
< 15 PPM Optical Sorting GuaranteePRODUCTJJ Fastener
PRODUCTFull Threaded Rod DIN 975 Alloy Steel A193 B7 and Stainless Steel 304 316 Fastener for Construction and Pipeline Support
Standard:DIN 975
Material Options:A193 B7 / Stainless Steel
Grade :A193 B7
What Are Threaded Rods & Stud Bolts?
Threaded rods are long bars threaded along their full length and cut to size on site, while stud bolts are short rods threaded at both ends to pull two flanges together. They are made to DIN 975 and ASTM A193 B7 with ASTM A194 2H nuts, in carbon, alloy and stainless steel, and bought in bulk for piping, valves and structural connections.
OEM / ODM DRAWING-TO-PART ENGINEERING
24H DFM FEASIBILITY · LIVE WORKSTATION
Can't find the exact fastener you need?
Send your drawing or sample for custom manufacturing.
We support precision non-standard cold heading, secondary 5-axis CNC machining, customized head stampings, specialized dual threads, and bespoke anti-corrosion platings. Our senior metallurgical engineers conduct Design for Manufacturability (DFM) reviews and return formal quotations within 24 hours.
Fast Tooling3–5 DaysRapid Prototyping
DFM FeedbackWithin 24hFeasibility Study
CAD SupportSTEP / DWG2D/3D Formats
Quality LevelPPAP Level 3CMM & MTR 3.1
lockStrict Mutual NDA Protected
verified PPAP Level 3 Ready
Non-Standard Fasteners100% Optical CMM
Direct metallurgical analysis and stress simulation for extreme duty applications.
MANUFACTURING SPECIFICATIONS
Bulk Fastener Standards & Manufacturing Capabilities
Rigorous quality control systems backed by in-house spark spectrometry, proof-load tensile testers, and 100% optical camera sorting.
verified100% In-Line Optical Inspection (< 15 PPM)
gavel
Core Normative Standards
Full compliance with world industrial standards across dimensional tolerances and thread geometries.
DINISOASTMANSIBS / ENGB
diamond
Prime Raw Materials
Sourced directly from Baosteel & Xingtai Steel with certified spark spectrometer batch heat numbers.
Carbon Steel:Q235, 35K, 45#
Alloy Steel:40Cr, 35CrMo, SCM435
Stainless Steel:AISI 304, 316 (A2/A4)
shield
Anti-Corrosion Finishes
Engineered to withstand heavy cyclic marine humidity and harsh industrial chemical exposures.
Zinc Plating:Cr3+ Clear / Yellow
HDG Galvanized:ASTM A153 1000h+
Dacromet / Geomet:1500h Salt Spray
local_shipping
Supply & Delivery
Dual supply model offering immediate container stock dispatch alongside turnkey OEM tooling fabrication.
Standard Stock:50,000+ SKUs (15d Lead)
Custom Tooling:Samples in 3–5 Days
Export Logistics:FOB, CIF, CFR, DDP
DIRECT MILL EXPORT INQUIRY
Buying in Bulk? Get an Instant Fastener Quote
Submit your required specifications or drawings. Our technical sales engineers respond with competitive tiered pricing within 2 hours.
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