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All Categories > PEM® Brand Fasteners for Metal Sheets and Panels > Nuts for Sheet Metal > All Metal, Locking Thread Nuts – Types FE, FEO, HNL, LA4, LAC, LAS, LK, LKA, LKS, SL, UL, RT > All Metal, Locking Thread Nuts – Type SL > TRI-DENT® Locknuts - Type SL - Unified > Part # SL-0420-1ZI  

Part # SL-0420-1ZI, TRI-DENT® Locknuts - Type SL - Unified

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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




 Specifications   

Thread Size
.250-20 (1/4-20)

Thread Code
0420

Shank Code
1

A (Shank) Max.

 View
.054 in

Min. Sheet Thickness
.056 in

Hole Size in Sheet + .003 - .000
.344 in

C Max.
.343 in

E ± .010
.440 in

T ± .010
.170 in

Min. Dist. Hole C/L to Edge
.34 in

For Use in Sheet Hardness
HRB 80 / HB 150 or less

Thread Specification
Internal, ASME B1.1, 2B

Fastener Material
Heat-Treated Carbon Steel

Standard Finish
Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless

CAD Supplier
PennEngineering® (PEM®)


 MORE IMAGES 

·  CL Installation

·  SL_Installed



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PEM Bulletin LN

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