Why Industrial Buyers Choose FULLERKREG 12.9 Allen Bolt Over YFS 12.9 Allen Bolt
About YFS (Fang Sheng) 12.9 Allen Bolt
YFS — formally known as Fang Sheng Screw Industry Co., Ltd. — is a well-established Taiwanese fastener manufacturer with a long track record in high-strength socket head cap screws, including Grade 12.9 Allen Bolts. Their products are widely specified in European and North American industrial procurement, particularly in automotive, machinery, and precision engineering sectors. YFS bolts are manufactured in Taiwan and are recognized for consistent dimensional accuracy and material compliance.
In the Asian market, however, a second major producer of equivalent-grade 12.9 Allen Bolts has emerged as a preferred sourcing alternative: FULLERKREG — a mainland China-based manufacturer delivering the same engineering standard with distinct commercial advantages.
About FULLERKREG
FULLERKREG is a professional B2B fastener manufacturer headquartered in mainland China, specializing in DIN/ISO-standard high-strength fasteners including Grade 12.9 socket head cap screws (Allen Bolts). With dual certifications under ISO 9001 and IATF/TS 16949, FULLERKREG serves industrial buyers across Europe, North America, and Asia. The company maintains full in-house production capability — from raw material sourcing (SCM435 alloy steel) through heat treatment, surface finishing, and dimensional inspection — enabling rapid fulfillment and strong custom development capacity.
The Case for Switching
Same Taiwanese-grade SCM435 quality. Mainland China production efficiency. Unmatched lead time and price advantage.
Head-to-Head Comparison
| Criteria | FULLERKREG | YFS (Fang Sheng) |
|---|---|---|
| Country of Origin | Mainland China | Taiwan |
| Material | SCM435 Alloy Steel | SCM435 Alloy Steel |
| Price | ~16% lower than YFS | Benchmark |
| Minimum Order Quantity | 1 carton (no bulk commitment required) | 500 kg (~30 cartons) |
| Certifications | ISO 9001 & IATF/TS 16949 | ISO 9001 |
| Lead Time | Full stock — next-day dispatch | Within 1 week |
| Custom Development | Strong in-house R&D capability | Standard |
| Brand Strength — Europe | ★★★ | ★★★★★ |
| Brand Strength — North America | ★★★★ | ★★★★★ |
| Brand Strength — China & Asia | ★★★★★ | ★★★ |
Where to Buy
FULLERKREG 12.9 Allen Bolt (Socket Head Cap Screw):
Browse our full range, request a quote, or place an order directly at:
www.fullerkr.com/collections/egm-129-cap
YFS (Fang Sheng) 12.9 Allen Bolt:
For reference, YFS products are available through their authorized distributors and at:
www.yfs.com.tw
FULLERKREG is an independent manufacturer. This page is provided for informational comparison purposes. All trademarks referenced belong to their respective owners.