NANJING DONGMING FASTENER CO., LTD.
Tongming Stainless Steel Fasteners
Source Tongming fasteners from an experienced distributor established in 2005. Share your specifications and quantities for a competitive quotation.
20+ years of experience · Tongming product expertise · Competitive quotations
EXPLORE THE RANGE
Find your fastener family
Start with the component type. Each enquiry is reviewed against the standard, dimensions, material and quantity you provide.
Bolts
Hex, flange and carriage bolt enquiries. Specify diameter, length, thread and property class.
Screws
Socket head, machine and set screw enquiries. Include the head style and drive type.
Nuts
Hex, lock and flange nut enquiries. Confirm the matching thread and locking requirements.
Washers & Retaining Rings
Flat washers, spring washers and retaining rings. Share dimensions or a drawing.
Threaded Rods & Studs
Define thread specification, overall length, material and required quantity.
SEMS & Assembled Screws
Specify the screw head, drive and washer combination for your assembly.
Also explore anchors, rivets, hand fasteners, rigging, pins, inserts and special material enquiries in the full catalogue.
FEATURED PRODUCT SERIES
Explore products and specifications
A selection from our stainless steel range. Open a product to view photographs, listed specifications and enquiry details.
DIN 933 Hex Bolts
Full-thread hex bolts. Browse material, property class, diameter and length combinations.
DIN 912 Socket Screws
Socket head cap screws. Review listed material groups and dimensions for your assembly.
DIN 934 Hex Nuts
Hex nuts in listed stainless steel grades. Confirm thread size and required property class.
DIN 125 A Flat Washers
Flat washers by material and size. Check the listed dimensions against your drawing.
DIN 976 Threaded Studs
Double-chamfer threaded studs. Browse the listed thread sizes, materials and lengths.
Closed-End Rivet Nuts
Flat head knurled rivet nuts. Send thread size, panel thickness and required quantity.
Need another specification? Send the standard, material, size and quantity with your enquiry. Availability and dispatch timing are confirmed when we quote.
START WITH A CLEAR SPECIFICATION
Find by standard or material
Keep the standard, material grade and property class separate when preparing your request. The guides below help you identify information to confirm.
STANDARD GUIDE
DIN 933
Confirm the DIN reference,
thread size and dimensions
needed for your enquiry.
STANDARD GUIDE
ISO 4017
Confirm the ISO reference,
thread size and dimensions
needed for your enquiry.
MATERIAL GUIDE
304 Stainless Steel
Specify 304 stainless steel,
the finish and environment
for your application.
MATERIAL GUIDE
316 Stainless Steel
Specify 316 stainless steel,
the service environment
and required documents.
ABOUT NANJING DONGMING
Two decades of fastener experience
Established in 2005, Nanjing Dongming Fastener Co., Ltd. is a long-standing Tongming distributor based in Nanjing, China, with more than 20 years of fastener supply experience.
Our product knowledge helps you communicate the right specifications. We offer competitive quotations based on the materials, quantities and delivery requirements in your purchasing list.
QUALITY MANAGEMENT
ISO 9001:2015 certification
A documented quality management system covering the sales and servicing of standard fasteners.
Certificate holder
Nanjing Dong Ming Fasteners Co., Ltd.
Scope
Sales and Servicing of Standard Fasteners
Certificate no. 01 100 1732543
Certificate period 28 July 2026 – 27 July 2029
Validity is subject to satisfactory surveillance audits. Product-specific inspection and documentation requirements should be stated in your enquiry.
TELL US ABOUT YOUR APPLICATION
Fasteners for your next project
Use your assembly drawing or bill of materials as the starting point. Product suitability and documentation are confirmed for each request.
Machinery & Heavy Equipment
Assembly fasteners for equipment frames, machine guards and service panels.
Pumps, Valves & Fluid Systems
Bolts, nuts and studs for pump equipment, valve assemblies and pipework supports.
Electrical & Power Equipment
Screws and washer assemblies for cabinets, enclosures and equipment mounting.
FROM YOUR LIST TO OUR REVIEW
Build a clearer request in three steps
01 / IDENTIFY
Choose the fastener
Share the product type, standard or drawing reference. List each item separately.
02 / SPECIFY
Add the details
Include material grade, property class, diameter, length, thread and quantity.
03 / SEND
Request a quotation
Add your delivery country and supporting files. Pricing, availability and lead time are confirmed in the quotation.
PREPARE BEFORE YOU ENQUIRE
Practical resources for purchasing
How to Send a Complete Fastener RFQ
Prepare product references, quantities, delivery details and attachments in one clear enquiry.
How to Read a Fastener Specification
Check how product references, dimensions, material, property class and finish fit together.
Ready to discuss your fastener requirements?
Send a single item, a purchasing list or a drawing. You can submit an enquiry directly without selecting a product first.
Business enquiries: biz@tongmingfasteners.com