JJ Fastener
PRODUCTFull Thread Hex Bolt DIN 933 / ISO 4017 Carbon Steel & Alloy Steel Fastener for Construction and General Industry
Standard:DIN 933 / ISO 4017
Strength Grade:Available upon request
Diameter Range:M2–M42
DIRECT MILL FASTENER CATALOGUE
Hex, Flange & Structural 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 11 VERIFIED FASTENER SERIES|Direct Mill Stock
< 15 PPM Optical Sorting GuaranteePRODUCTJJ Fastener
PRODUCTFull Thread Hex Bolt DIN 933 / ISO 4017 Carbon Steel & Alloy Steel Fastener for Construction and General Industry
Grade:Grade 8.8
Material:Carbon Steel
Standard:DIN 933/DIN 931
What Are Hex Bolts?
Hex bolts are threaded fasteners with a six-sided head, tightened with a wrench or socket to clamp two or more parts together. They are made to standards such as DIN 931, DIN 933, ISO 4014, ISO 4017 and ASTM A325 in carbon, alloy or stainless steel, and supplied in bulk for steel construction, machinery and automotive assembly.
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)
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Core Normative Standards
Full compliance with world industrial standards across dimensional tolerances and thread geometries.
DINISOASTMANSIBS / ENGB
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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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