DIRECT MILL FASTENER CATALOGUE

Bolts, Nuts & Screws — Bulk Fastener 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
Categories & Filters

QUICK SEARCH

CATEGORY TREE

5 Categories
SHOWING 3 VERIFIED FASTENER SERIES|Direct Mill Stock
< 15 PPM Optical Sorting Guarantee
JJ Fastener
Button Head Socket Screw ISO 7380-1 Alloy Steel and Stainless Steel Fastener for Machinery Furniture and Equipment Panel AssemblyPRODUCT

Button Head Socket Screw ISO 7380-1 Alloy Steel and Stainless Steel Fastener for Machinery Furniture and Equipment Panel Assembly

Dimensional Standard:ISO 7380-1:2022
Material Options:Alloy Steel, Stainless Steel
View Details
JJ Fastener
Hex Socket Countersunk Head Cap Screw DIN 7991 Alloy Steel and Stainless Steel Fastener for Flush Surface Machinery AssemblyPRODUCT

Hex Socket Countersunk Head Cap Screw DIN 7991 Alloy Steel and Stainless Steel Fastener for Flush Surface Machinery Assembly

Standard:DIN 7991
Material Options:Alloy Steel / Stainless Steel
Strength Grade:Available upon request
View Details
JJ Fastener
Hex Socket Head Cap Screw DIN 912 Alloy Steel 8.8 and 12.9 or Stainless Steel 304 and 316 Fastener for Machinery and Mold AssemblyPRODUCT

Hex Socket Head Cap Screw DIN 912 Alloy Steel 8.8 and 12.9 or Stainless Steel 304 and 316 Fastener for Machinery and Mold Assembly

Strength Grade:8.8/12.9
Standard:DIN 912
Material:Alloy Steel Grade / Stainless Steel
View Details

What Are Industrial Fasteners?

Industrial fasteners are the threaded components — bolts, nuts, screws, studs, threaded rods and anchors — that clamp, join and secure parts in machinery, vehicles, steel structures and buildings. They are specified by standard (DIN, ISO, ASTM, ANSI), material and grade, thread size, length and surface finish, and bought in bulk by distributors, OEM plants and contractors.

How to Order Fasteners in Bulk

  1. 01

    Send your specification

    Standard (DIN, ISO, ASTM or ANSI), size, grade, material, finish and quantity — or a drawing or sample for custom parts.

  2. 02

    Get a quotation

    We reply within 2 business hours with tiered FOB or CIF pricing, MOQ and lead time.

  3. 03

    Approve the sample

    Pre-production samples with an inspection report ship by express in 3–5 working days.

  4. 04

    Place the bulk order

    30% deposit, balance against B/L copy, with optical sorting and EN 10204 3.1 reports per lot.

  5. 05

    Receive your container

    FCL or LCL from Tianjin or Qingdao in 12–15 days with complete export documentation.

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
Live Engineering Lab & Blueprint Metrology
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
350+ Certified Tooling Sets
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)
EN 10204 3.1 MTR Traceable
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
ASTM B117 Lab Stamped
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
PPAP L3 Automotive Ready
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.

Loading form...