ICC ESR-4185 for S-BT Screw-In Fasteners

ManualsBrandsHilti ManualsFastenersS-BT GR Screw-in stud

Table Of Contents

ICC-ES Evaluation Reports are not to be construed as representing aesthetics or any other attributes not specifically addressed, nor are they to be construed

as an endorsement of the subject of the report or a recommendation for its use. There is no warranty by ICC Evaluation Service, LLC, express or implied, as

to any finding or other matter in this report, or as to any product covered by the report.

ICC-ES Evaluation Report

ESR-4185

Reissued June 2021

This report is subject to renewal June 2023.

www.icc-es.org | (800) 423-6587 | (562) 699-0543 A Subsidiary of the International Code Council

DIVISION: 05 00 00—METALS

Section: 05 05 23—Metal Fastenings

REPORT HOLDER:

HILTI, INC.

EVALUATION SUBJECT:

HILTI S-BT SCREW-IN FASTENERS

1.0 EVALUATION SCOPE

Compliance with the following codes:

 2018, 2015 and 2012 International Building Code

(IBC)

 2018, 2015 and 2012 International Residential Code

(IRC)

For evaluation for compliance with codes adopted by the

Los Angeles Department of Building and Safety (LADBS),

see ESR-4185 LABC and LARC Supplement.

Property evaluated:

Structural

2.0 USES

The Hilti S-BT Screw-in Fasteners are used to attach

nonstructural components including architectural,

mechanical, electrical and similar components, which are

not part of the primary load-bearing or lateral-force-resisting

systems, to a supporting steel substrate. The fasteners may

be used for structures regulated under the IRC, when an

engineered design is submitted in accordance with IRC

Section R301.1.3.

3.0 DESCRIPTION

3.1 S-BT Screw-in Fasteners:

Hilti S-BT Screw-in Fasteners are self-tapping fasteners

with a short, blunt threaded portion on one end for

embedment into the supporting steel, and a standard thread

along the majority of the shank for attachment of supported

materials. A sealing washer with a chloroprene rubber (CR)

sealing ring is premounted on the tapping end of the

fastener. A serrated flange nut is supplied with S-BT Screw-

in Fasteners for multipurpose fastenings (S-BT-M_). The S-

BT Screw-in Fasteners for grating fastenings

(S-BT-G_) are not supplied with serrated flange nuts and

are intended for use in fastening grating.

The S-BT fasteners must be installed in a predrilled hole.

See Table 1 for available fastener materials, thread

designations and lengths. See Figure 1 for illustrations of

the S-BT fasteners.

3.1.1 S-BT-MR and S-BT-GR Screw-in Fasteners:

These fasteners are formed from stainless steel complying

with the manufacturer’s specification, with chemical

composition of 1.4462 X2CrNiMoN22-5-3, and are zinc

plated to facilitate installation. The premounted sealing

washer has a diameter of 0.472 inch (12 mm) and is

manufactured from SAE 316 stainless steel, bonded to the

CR material (denoted by ‘SN’ in the product designation).

Serrated flange nuts for the S-BT-MR fasteners are also

manufactured from stainless steel.

3.1.2 S-BT-MF and S-BT-GF Screw-in Fasteners: These

fasteners are formed from Grade 1038 carbon steel and

have a duplex coating. The coating consists of an

electroplated zinc alloy layer and a top coat, with a total

coating thickness of 35 μm. The premounted sealing washer

has a diameter of 0.394 inch (10 mm) and is manufactured

from an aluminum magnesium alloy, bonded to the CR

material (denoted by ‘AN’ in the product designation).

Serrated flange nuts for the S-BT-MF fasteners are

manufactured from carbon steel with a

hot-dipped galvanized coating.

3.2 Steel Substrates:

The supporting steel substrate must be structural steel

complying with the minimum strength requirements of

ASTM A36; ASTM A572 Grade 50 or ASTM A992, and must

have the minimum thickness, yield strength and tensile

strength shown in Tables 2 and 3, as applicable.

4.0 DESIGN AND INSTALLATION

4.1 Design:

4.1.1 Allowable Static Loads: The most critical applied

loads, excluding seismic load effects, resulting from the load

combinations in IBC Section 1605.3.1 or 1605.3.2 must not

exceed the allowable loads shown in Tables 2 and 3, as

applicable. For fasteners that are subjected to seismic

loads, see Section 4.1.3 for additional information. The

stress increases and load reductions described in IBC

Section 1605.3 are not allowed.

Allowable shear loads and tension (pullout) loads in this

report apply to the connection of the fastener to the

supporting steel substrate only. Limit states such as

pull-over and lateral bearing, which are governed by the

properties of attached materials, are outside the scope of

this report. Design of the connection of the attached material

to the steel substrate, must take into account the properties

of the attached material, accounting for interaction between

the attached material, the screw-in fastener and the steel

substrate, and must comply with the applicable

requirements of the IBC.

Summary of content (6 pages)

PAGE 1
ICC-ES Evaluation Report ESR-4185 Reissued June 2021 This report is subject to renewal June 2023. www.icc-es.org | (800) 423-6587 | (562) 699-0543 DIVISION: 05 00 00—METALS Section: 05 05 23—Metal Fastenings REPORT HOLDER: HILTI, INC. EVALUATION SUBJECT: HILTI S-BT SCREW-IN FASTENERS 1.
PAGE 2
ESR-4185 | Most Widely Accepted and Trusted 4.1.2 Combined Loading: For fasteners subjected to both tension and shear loads, compliance with the following interaction equation must be verified: (p/Pa) + (v/Va) ≤ 1 where: p = Actual applied tension load on fastener, lbf (N). Pa = Allowable tension load on fastener, lbf (N). v = Actual applied shear load on fastener, lbf (N). Va = Allowable shear load on fastener, lbf (N). 4.1.
PAGE 3
ESR-4185 | Most Widely Accepted and Trusted Page 3 of 6 TABLE 1—S-BT SCREW-IN FASTENER DESCRIPTIONS DESIGNATION FASTENING THREAD DESIGNATION NOMINAL FASTENING THREAD LENGTH [inch (mm)] S-BT-GR M8/7 SN 6 Metric 8 mm 0.67 (17.05) S-BT-MR W10/15 SN 6 UNC 3/8-inch 1.09 (27.75) S-BT-GF M8/7 AN 6 Metric 8 mm 0.67 (17.05) S-BT-MF W10/15 AN 6 UNC 3/8-inch 1.09 (27.75) TAPPING THREAD DIAMETER [inch (mm)] NOMINAL TAPPING THREAD LENGTH [inch (mm)] MATERIAL 0.23 (5.8) 0.24 (6.
PAGE 4
ESR-4185 | Most Widely Accepted and Trusted FIGURE 1—HILTI S-BT SCREW-IN FASTENER WITH SEALING WASHER Page 4 of 6 FIGURE 2—DEPICTION OF STAND-OFF DIMENSION, hNVS, AND HOLE DRILLED INTO STEEL BASE MATERIAL FIGURE 3—DEPICTION OF HOLE DRILLED THROUGH STEEL BASE MATERIAL FIGURE 4—DEPICTION OF IDENTIFYING MARKING “HI” FOR HILTI S-BT SCREW-IN STAINLESS STEEL FASTENERS, “H” FOR HILTI S-BT SCREW-IN CARBON STEEL FASTENERS  Mark location for each fastening  Pre-drill with TS-BT stepped drill bit  Screw S-B
PAGE 5
ICC-ES Evaluation Report ESR-4185 LABC and LARC Supplement Reissued June 2021 This report is subject to renewal June 2023. www.icc-es.org | (800) 423-6587 | (562) 699-0543 A Subsidiary of the International Code Council ® DIVISION: 05 00 00—METALS Section: 05 05 23—Metal Fastenings REPORT HOLDER: HILTI, INC. EVALUATION SUBJECT: HILTI S-BT SCREW-IN FASTENERS 1.
PAGE 6
ICC-ES Evaluation Report ESR-4185 FBC Supplement Reissued June 2021 This report is subject to renewal June 2023. www.icc-es.org | (800) 423-6587 | (562) 699-0543 A Subsidiary of the International Code Council ® DIVISION: 05 00 00—METALS Section: 05 05 23—Metal Fastenings REPORT HOLDER: HILTI, INC. EVALUATION SUBJECT: HILTI S-BT SCREW-IN FASTENERS 1.