Selection Guide

4
STEEL CITY® HANGERS, CLAMPS & FASTENERS
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Steel City® hangers, clamps
& fasteners
Overview
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Materials
The following materials are used for Steel City®
spring steel fasteners:
• High-carbon spring steel
Spring steel products are manufactured using
high-carbon cold-rolled steel, AISI C1075 or
equivalent. The final part is heat treated to give
the formed product great resilience and strength.
• Low-carbon steel
Mild steel products are manufactured using low-
carbon cold-rolled steel, AISI C1008 or equivalent.
Such parts receive a zinc or painted finish
to protect the finished product.
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Finishes
• Zinc phosphate
The zinc phosphate finish is per MIL-SPEC-16232,
type Z. This finish includes a zinc phosphate base
with a supplementary sealant applied. The
finished product will withstand 24 to 72 hours of
saltspray testing in accordance with ASTM B117.
• Pre-galvanized
Products receiving a pre-galvanized finish are
low-carbon steel products with a coating of zinc
applied to the steel prior to part fabrication. This
finish is in conformance with ASTM A525.
• Electro-galvanized
The electro-galvanized finish is a zinc finish which
includes an electro-plated layer of zinc and a clear
conversion coat. This finish is applied after
fabrication and is in conformance with ASTM B633.
• Painted
Some products in the Steel City® line receive a
painted finish. Parts are painted for applications
which require alternate colors to the standard
black zinc phosphate (such as with acoustical
ceilings).
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Load ratings
The Steel City® spring steel fastener products
shown in this catalog have a load limit based on the
following:
• Static load limit
Such products show the load limit which is based
on a safety factor of 3.
• Ultimate static load limit
Such products show the load limit which is the
highest load allowed, with no safety factor.
These load limits apply only to catalog numbers
which list such a limit. For both instances, the static
load limits apply only in the orientation described
in the catalog or instruction sheet. These loads
apply only to the fastener, the structure to which it
will be attached must be evaluated separately.