Fasteners / Standard Parts
Bolts, nuts, pins, washers
- Material SS 304, SS 316, 45#/Q235 carbon, 20Cr alloy, titanium
- Process Cold heading, turning, tapping, heat treatment, finishing
- Tolerance ISO 4759
- Lead Time 7-15 days
Product Details
Hex bolts, flange nuts, self-tapping screws, pins, and washers per ISO, DIN, ANSI/ASME, GB, JIS, or per drawing. Carbon, stainless, alloy, and titanium. Strength 4.8-12.9 / A2-70 / A4-80 with zinc, nickel, Dacromet, blackening, or passivation coatings.
Applications
- Steel-structure bolts
- Equipment locating pins
- Pipe-flange nuts
- Electronic instrument screws
- Automotive aftermarket fasteners
Typical Size Range
- Min
- M2
- Max
- M64
- Other
- Length ≤1000mm
Common Materials
| Material Grade | International Standard | Typical Application |
|---|---|---|
| SS 304 | A2-70 / AISI 304 | General rust-proof fasteners |
| SS 316 | A4-80 / AISI 316 | Marine, chemical fasteners |
| 45# Carbon | Grade 8.8 | High-strength structural bolts |
| Titanium TC4 | Ti-6Al-4V | Aerospace, lightweight |
Process Capabilities
- Cold heading (M2-M20 mass production)
- CNC turning (non-standard M22-M64)
- Thread rolling / tapping / turning (6g/6H)
- Heat treatment (Q&T, quench, case hardening)
- Surface treatment (zinc, nickel, Dacromet, blackening, passivation)
Fasteners / Standard Parts Part Gallery
Finished parts and typical process features (3 photos)
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03 Frequently Asked Questions
Which international standards are supported?
ISO, DIN, ANSI/ASME, GB and JIS — customer-specified standard drawings can be produced directly.
Can you guarantee strength grade?
Yes — strength grades (4.8/8.8/10.9/12.9/A2-70/A4-80) are guaranteed through material + heat treatment + coating, with optional tensile testing.
Maximum non-standard fastener size?
Non-standard up to M100 diameter and ≤1500mm length. Cold heading covers M2-M20; beyond that we turn the parts.
What is the MOQ?
Stocked sizes from 1 piece; custom non-standard from 500 pieces. Coated parts (zinc / Dacromet) typically MOQ 1000.
Detailed Content
Fasteners / Standard Parts
Fasteners and standard parts are the most-used base components in mechanical assembly, including bolts, nuts, pins and washers, in custom or international standard sizes.
Core Process Capabilities
- Cold heading + thread rolling: M2-M20 standard bolts use multi-station cold heading to form head/shaft, with thread rolling at 6g accuracy and single-piece cycle ≤1 second — ideal for high-volume delivery.
- CNC turning for non-standard: M22-M64 large-diameter, ultra-long (≤1500mm) non-standard bolts are turned on CNC lathes, with custom heads, stepped shafts and special threads (UNF/UNC) supported.
- Stable strength grade: Material (35#/45#/40Cr/alloy) + Q&T quench + surface treatment combined to guarantee 4.8 / 8.8 / 10.9 / 12.9 grades, with optional tensile test reports.
- Serrated flange nuts for anti-loosening: DIN 6923 serrated flange nuts formed by single cold heading; the serrations provide anti-loosening torque and remove the need for spring washers, ideal for vibrating conditions.
- Multi-finish corrosion protection: Zinc, nickel, Dacromet, blackening and passivation available, with neutral salt spray 48-500h grades matched to outdoor, chemical and marine environments.