JJ Fastener
PRODUCTHex Coupling Nut DIN 6334 Carbon Steel and Stainless Steel Fastener for Threaded Rod Connection and Support Systems
Standard:DIN 6334
Material Options:Carbon Steel / Stainless Steel
Thread Sizes:M6 - M36
DIRECT MILL FASTENER CATALOGUE
Hex, Flange, Lock & Heavy Hex Nuts 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 8 VERIFIED FASTENER SERIES|Direct Mill Stock
< 15 PPM Optical Sorting GuaranteePRODUCTJJ Fastener
PRODUCTHeavy Hex Nut ASTM A563 Carbon Steel Fastener for Structural Steel and Construction
Standard:ASTM A563
Material:Carbon Steel
JJ Fastener
PRODUCTHeavy Hex Nut ASTM A194 Grade 2H Alloy Steel Fastener for High Pressure Pipeline and Flange Connection
Grade Standard:ASTM A194 Grade 2H
Material:Alloy Steel
JJ Fastener
PRODUCTNylon Insert Lock Nut DIN 985 Carbon Steel with Nylon Insert Fastener for Vibration Resistant Machinery Fastening
Standard:DIN 985 / ISO 10511
Material:Carbon Steel with Nylon Insert
JJ Fastener
PRODUCTHigh Type Nylon Insert Lock Nut DIN 982 Carbon Steel with Nylon Insert Fastener for Automotive and Machinery Assembly
Standard:DIN 982 / ISO 7040
Strength Grade Options:5 / 8 / 10
Material:Carbon Steel with Nylon Insert
JJ Fastener
PRODUCTHex Flange Nut DIN 6923 Carbon Steel Fastener for Automotive and Agricultural Machinery
Standard:DIN 6923
Strength Grade Options:8 / 10 / 12
Material:Carbon Steel
JJ Fastener
PRODUCTThin Hex Nut DIN 439 Carbon Steel Fastener for Machinery and Space Limited Fastening
Standard:DIN 439-1
Product Grade:Grade B
Material:Carbon Steel
JJ Fastener
PRODUCTHex Nut DIN 934 / IS 1363 Carbon Steel and Stainless Steel Fastener for Construction and Machinery Fastening
Standard Options:DIN 934 / IS 1363
Material Options:Carbon Steel / Stainless Steel
What Are Hex Nuts?
Hex nuts are internally threaded fasteners with a six-sided body that screw onto a matching bolt or stud to clamp parts together. They are produced to DIN 934, ISO 4032 and ASTM A194 in carbon and stainless steel, in nylon-insert, flange and heavy-hex variants, and bought in bulk to match bolts in steelwork, machinery and pipeline flanges.
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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