Zygology
Zygology Ltd
Unit 7, Thame 40 Jane Morbey Road
Thame Oxon OX9 3RR
Phone: 0808 123 1221
Fax: +44 1844 266021
Email: sales@zygology.com
Web Address: www.zygology.com
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Type SL self-locking nuts are designed with a unique and economical TRI-DENT® locking feature, which meets demanding locking performance requirements.
  • 3 cycle locking performance. Achieved using steel socket head cap screws, 180 ksi / property class 12.9 with standard finish of thermal oxide and light oil.
  • Recommended for use in sheets HRB (Rockwell “B” scale) 80 or less and HB (Hardness Brinell) 150 or less.
All metal, locking thread nuts – SL
TRI-DENT® Locknuts - Type SL 2
Unit of Measure
1 

Item #

Thread Size

A (Shank) Max.

Hole Size in Sheet + .003 - .000

E ± .010

T ± .010

Fastener Material

Standard Finish

CAD

SL-440-1ZI N/A .112-40 (#4-40) N/A 0.038 in N/A .166 in N/A .250 in N/A .070 in N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
SL-632-1ZI N/A .138-32 (#6-32) N/A 0.038 in N/A .1875 in N/A .280 in N/A .070 in N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
SL-832-1ZI N/A .164-32 (#8-32) N/A 0.038 in N/A .213 in N/A .310 in N/A .090 in N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
SL-032-1ZI N/A .190-32 (#10-32) N/A 0.038 in N/A .250 in N/A .340 in N/A .090 in N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
SL-0420-1ZI N/A .250-20 (1/4-20) N/A .054 in N/A .344 in N/A .440 in N/A .170 in N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
SL-0518-1ZI N/A .313-18 (5/16-18) N/A .054 in N/A .413 in N/A .500 in N/A .230 in N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
SL-440-2ZI N/A .112-40 (#4-40) N/A .054 in N/A .166 in N/A .250 in N/A .070 in N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
SL-632-2ZI N/A .138-32 (#6-32) N/A .054 in N/A .1875 in N/A .280 in N/A .070 in N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
SL-832-2ZI N/A .164-32 (#8-32) N/A .054 in N/A .213 in N/A .310 in N/A .090 in N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
SL-032-2ZI N/A .190-32 (#10-32) N/A .054 in N/A .250 in N/A .340 in N/A .090 in N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
SL-0420-2ZI N/A .250-20 (1/4-20) N/A .087 in N/A .344 in N/A .440 in N/A .170 in N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
SL-0518-2ZI N/A .313-18 (5/16-18) N/A .087 in N/A .413 in N/A .500 in N/A .230 in N/A Heat-Treated Carbon Steel N/A Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless N/A CAD Icon (for items table)
Unit of Measure
1