Specialized Screws, We Welcome the Impossible.
The products that appear in this catalog are a mere fraction of the various services offered at e-nedzi.com®.
For special screw types, no matter how difficult, please turn to NBK.
Modification
Screw Length Adjustment
Ventilation Hole

Thread Undercut

Modify Screw End

Downsize Screw Head Diameter

Lateral Perforation Process

Surface Treatment

Trivalent Chromate
Treatment

Electroless Nickel
Plating

Raydent Treatment

Gold Plating

Silver Plating

Chrome Plating

Nickel Plating

Antibacterial
Treatment

Tuff ride Treatment
(Salt Bath Nitro car-
burizing Treatment)

Chemical Polish

Electro-polish

Gold Coating

Molybdenum
Disulfide Coating

Teflon Coating

Tin Coating

Ferrosoferric Oxide
Coating (Black)

Anodized Aluminum
Coating (White)

Painted-Baked
Head Finish
Material
Special Materials Screws

Titanium

Phosphor Bronze

Ceramic

Molybdenum

Aluminum
Other materials are also available.
Steels:
S45C(≈1045 : AISI), SCM435 (≈4135:AISI), SUJ2 (≈52100:ASTM), SUM22L (≈12L13 : ASTM), SS400, etc.
Stainless Steels:
SUS303 (≈S30300 : ASTM), SUS304 (≈S30400 : ASTM), SUS310S (≈S31008 : ASTM), SUS316 (≈S31600 : ASTM), SUS316L (≈S31603 : ASTM), SUS329J1 (≈S32900 : ASTM), SUS329J3L (≈S31803 : ASTM), SUS403 (≈S40300 : ASTM), SUS420J2, SUS43 (≈S43000 : ASTM), SUS440C (≈S44004 : ASTM), SUS630H1150, SUS630H900, etc.
Aluminum:
A2011 (≈2011 : ASTM), A2017 (≈2017 : ASTM), A2024 (≈2024 : ASTM), A5052 (≈5052 : ASTM), A6061 (≈6061 : ASTM), A6063 (≈6063 : ASTM), A7075 (≈7075 : ASTM), etc.
Nickel Alloy:
Hastelloy (C22/B2/C276), Inconel (600/601/625), Invar, Super Invar, Nickel,etc.
Others:
Pure Molybdenum, Pure Titanium, 6-4Titanium, Oxygen-Free Copper (C1020B≈C10200 : ASTM), Tough Pitch Copper (C1100B≈C11000 : ASTM), Brass(C3604B≈C36000 : ASTM), Phosphor Bronze (C5191), Beryllium Copper Alloy 25, Beryllium Copper Alloy 50, Tantalum, etc.
Plastic Screws

PEEK

PC

RENY

AURUM

PVDF
Other plastics are available such as PPS, PVC, PA6, PTFE, POM, UHMW-PE, VESPEL SP-1/SCP-5000, etc.
Looseness Elimination

Thread
Thread Pitch:
Metric Coarse Thread, Metric Fine Thread (JIS B 0207), Unified Coarse Thread(JIS B 0206), Unified Fine Thread(JIS B 0208), Parallel Pipe Thread(JIS B 0202), Taper Pipe Thread(JIS B 0203),etc.
Head Style
