Technical Data Sheets
Product Specifications & Engineering Data
Comprehensive technical specifications for SAK Fasteners' metal screws and plastic fixing systems. Material grades, heat treatment processes, plating standards, and application guidelines for engineers and specifiers.
Metal Screw Products
Wood Screws
In StockBase Material
SAE 1008 (Low-Carbon Steel)
Threading Process
Rolled Threads
Heat Treatment
Case Hardening ~0.30mm
Hardness (Rockwell C)
Surface HRC 50 | Core HRC 30
Surface Finish
Zinc (8μm min) | 100+ hrs salt spray
Available Sizes
#6, #8, #10, #12 (3/4" to 3" lengths)
Typical Applications:
Wooden furniture, carpentry, MDF assembly
Drywall Screws
In StockBase Material
SAE 1018 (Medium-Carbon Steel)
Threading Process
Rolled Threads (Fine Pitch)
Heat Treatment
Case Hardening ~0.30mm
Hardness (Rockwell C)
Surface HRC 52 | Core HRC 32
Surface Finish
Black Zinc / Yellow Zinc (8μm min)
Available Sizes
#6 x 1", #6 x 1.25", #6 x 1.625", #8 x 1.25"
Typical Applications:
Gypsum board, plasterboard, ceiling systems
Chipboard Screws
In StockBase Material
SAE 1018 (Medium-Carbon Steel)
Threading Process
Rolled Threads (Coarse Pitch)
Heat Treatment
Case Hardening ~0.30mm
Hardness (Rockwell C)
Surface HRC 52 | Core HRC 32
Surface Finish
Yellow Zinc (8μm min) | 100+ hrs salt spray
Available Sizes
3.5mm, 4.0mm, 4.5mm, 5.0mm (various lengths)
Typical Applications:
Particle board, MDF, chipboard, melamine panels
Self-Tapping Screws
In StockBase Material
MS / SS 202 / SS 304 / SS 316
Threading Process
Rolled Threads (Thread-Forming)
Heat Treatment
Case Hardening (MS Only)
Hardness (Rockwell C)
MS: HRC 50-52 | SS: As-rolled
Surface Finish
MS: Zinc 8μm | SS: Passivated
Available Sizes
ST2.9, ST3.5, ST4.2, ST4.8 (10-50mm)
Typical Applications:
Sheet metal, plastic enclosures, HVAC ducts
Plastic Fixing Systems
Standard Wall Plugs (Fischer Pattern)
Tier-2 GradeMaterial
PPCP / HDPE (100% Virgin Grade)
Color
Light Grey (Standard), Color-coded options
Sizes Available
S6×30, S8×40, S10×50, S12×60, S14×70
Load Capacity
5-20kg depending on wall type
Design Features
4-way expansion, anti-rotation ribs, collar flange
Typical Applications:
Interior fit-out, electrical/plumbing, furniture mounting
Nylon Frame Anchors (General-Purpose)
Tier-2 GradeMaterial
HDPE / Nylon 6 (General-Purpose Grade)
Sizes Available
6×40, 6×60, 8×60, 8×80, 8×100, 8×120, 10×80, 10×100, 10×120, 10×140, 10×160
Load Capacity
25-40kg per anchor in concrete
Design Features
Expansion sleeve design, pre-assembled screw, corrosion-free
Typical Applications:
uPVC frames, curtain walls, MEP equipment, HVAC mounting
Manufacturing Process Flow
Step 1
Cold Heading
→
Step 2
Thread Rolling
→
Step 3
Heat Treatment
→
Step 4
Electro-Plating
→
Step 5
QC & Packaging
✓ Rolled Threads
Higher strength vs. cut threads due to grain flow retention. Applied to all screw SKUs.
🔥 Case Hardening
~0.30mm case depth. Hard shell + ductile core prevents head shearing, improves thread bite.
🛡️ Zinc Plating
Min 8μm thickness. 100+ hours salt spray tested. Suitable for indoor construction environments.
✓ Suitable Applications
✓Drywall & gypsum board systems
✓Light steel keel framing
✓MDF, chipboard, plywood assembly
✓Interior fit-out & renovation
✓MEP/HVAC equipment mounting
✓Electrical conduit fixing
✓Furniture & carpentry
✓uPVC window/door installation
✓False ceiling grid assembly
❌ Not Suitable For
❌Seismic anchoring / ETA-certified structural applications
❌Exterior structural steel in high-corrosion zones
❌Marine, chemical, or high-temperature environments
❌Dynamic seismic loading or vibration-critical connections
❌Through-bolting for heavy machinery (>500kg loads)
❌Permanent outdoor exposure without protective coatings
Note: SAK Fasteners specializes in Tier-2 volume construction fasteners. We are not Hilti, Würth, Fischer, or ETA/CE seismic anchor OEMs. Our products are cost-effective solutions for high-volume commercial construction markets.