Fastener Guide / Wall Charts

Structural Bolting Systems

Printable shop wall chart: Structural Bolting Systems. Free letter-size PDF to print and post at the counter; 25 x 36 inch poster version available.

Last reviewed 2026-09-10 · reference FG-CF8D8E · Report an error on this sheet

Structural bolting: pretensioned and slip-critical joints are installed to the RCSC Specification and the project documents, not to a generic torque chart. The engineer of record governs.
GradeHeadTensileGalvanizing
A325Heavy hex120 ksi minAllowed (HDG or mechanical)
A490Heavy hex150 - 173 ksiNot allowed; zinc-flake (F3393) only
F1852Round TC120 ksi minAllowed
F2280Round TC150 - 173 ksiNot allowed; zinc-flake (F3393) only

Component Specification

F2280

ComponentSpecification
NutASTM A563 heavy hex (DH for galvanized and A490)
WasherASTM F436 (required with A490)
Tension indicatorASTM F959 DTI, 325 or 490 type
Installation methodsSnug-tight, turn-of-nut, calibrated wrench, twist-off TC, DTI (per RCSC)

Structural bolts are assemblies from compatible lots. A machinery torque chart does not apply.

These tables carry the same figures as the printed sheet below.

The printed sheet

Structural Bolting Systems

25 x 36 inch poster version

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Text version of this sheet

A325

A490

A325

F3125 A325

F3125 A490

F1852 TC BOLT

DH

F436

A563 DH NUT

F436 WASHER

ASTM F3125 structural bolts and their matched components · installed per the RCSC Specification

F3125 grades

Grade

Head

Tensile

Galvanizing

A325

Heavy hex

120 ksi min

Allowed (HDG or mechanical)

A490

Heavy hex

150 - 173 ksi

Not allowed; zinc-flake (F3393) only

F1852

Round TC

120 ksi min

Allowed

F2280

Round TC

150 - 173 ksi

Not allowed; zinc-flake (F3393) only

Component

Specification

Nut

ASTM A563 heavy hex (DH for galvanized and A490)

Washer

ASTM F436 (required with A490)

Tension indicator

ASTM F959 DTI, 325 or 490 type

Installation methods

Snug-tight, turn-of-nut, calibrated wrench, twist-off TC, DTI (per RCSC)

Structural bolts are assemblies from compatible lots. A machinery torque chart does not apply.

The Fastener App | TheFastenerApp.com

Fastener Guide reference FG-CF8D8E · thefastenerapp.com/fastener-guide/wall-charts/structural-bolting-systems · © The Fastener App. Reference only — verify the current governing standard, drawing and manufacturer data before specifying or installing.

Related sheets

← Bolt - Nut - Washer MatchingInch Bolt Mechanical Strength →

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