The Bolt Book for Energy
A DIMENSIONAL CATALOG
Sigma Specialty Bolts and Coatings
Screws
Round Head Screws
Various Head Styles Machine Scerws
Tapping Screws (Approx. Hole Sizes)
Thumb and Wing Screws
B7 Studs and Nuts
Stud Bolts for Pressure-Temperature Piping
General Purpose End-to-End Studs
Tap End Stud Bolts
Double End Stud Bolts
Bolts
Hex Cap Screws (Finished Hex Bolts)
Wrench Openings for Square and Hex Bolts and Screws
Heavy Hex Bolts
Heavy Hex Structural Bolts
High-Strength Structural Bolting
Carriage Bolts and Lag Bolts
Square Bolts
Step Bolts and Countersunk Head Elevator Bolts
Nuts
Finished and Heavy Hex Nuts
Hexagon Machine Screw Nuts
Type A Forged Wing Nuts
Hex Slotted Nuts
Hex and Heavy Hex Jam Nuts
Hex Castle Nuts
Large Diameter Hexagon Head Cap Nuts
Round Spanner Nuts
Heavy Hex Nuts with Tommy Bar Holes
Sockets & Pins
Socket Head Cap Screws
Button Head and Flat Head Socket Cap Screws
Socket Set Screws
Hexagon Keys and Bits
Socket Head Shoulder Screws, Dowel Pins, and Slotted Set Screws
Square Head Set Screws and Socket Pipe Plugs
Physical Properties of Sockets
Point Terminology
Flange 12-Point Screws
Taper Pins
Threaded Taper Pins
Dowel Pins
Roll Pins
Cotter Pins
Washers
USS Wrought Washers
Stainless Steel Washers
S.A.E. Washers
Brass Washers
Beveled Washers
Spring Lock Washers
Tooth Lock Washers
Belleville Washers
Anchors
Wedge Anchors
Drop-In Anchors
Single Expansion Anchors
Machine Screw Anchors
Lag Shields
Lead Wood Screw Anchors
Hammer drive Anchors
Hollow Wall Anchors
Toggle Bolts
Toggle Wings and Nylon Nail Anchors
Plastic Anchors and Toggles
Locknuts
ESNA® Light Hex Nuts
FLEXLOC® Self-Locking Nuts
Prevailing-Torque Type Steel Hex and Hex Flange Nuts
ANCO Self-Locking Nuts
Self-Sealing Screws
Plated Carbon Steel
Stainless Steel
Plated Steel Self-Drilling
Self-Locking Fasteners
U-Bolts and Eye Bolts
Anchor Bolts & Bent Bolts
A-Bolts, Standard
U-Bolts, Long Tangent
Eyebolts-Regular Pattern
Eyebolts-Shoulder Pattern
Rod End Eyebolt Blanks
Metric Fasteners
Metric Hex, Head Cap Screws
Weights of Metric Hex Head Cap Screws
Metric Socket Cap Screws & Metric Flat Head Socket Caps
Metric Socket Set Screw & Metric Button Socket Caps
Metric Hex Nuts
Metric Flatwashers
Metric Internal & External Tooth Washers
Metric Lockwashers
Miscellaneous/General – Bolting Guidlines
Thread Length Measurement & Suggested Lengths & Torques for Common Flange Applications
Bolting & Ring Gasket Requirements for ANSI & API Flanges
Gaskets
Type R Type Gasket
Type RX Type Ring Gasket
Threads, Markings, Platings & Coatings, Weights & Materials
Unified Inch Screw Threads
ASTM & SAE Grade Markings for Steel Bolts & Screws
Platings & Coatings for Fasteners
Hex Cap Screws – SAE J429
Steel Bar Weights
Weight Multiplier for Various Materials
Material Selection Chart
Sigma Distributes and Manufacturers Bolting to your specifications
studs, cap screw, hex nuts, heavy hex nuts, lock nuts, jam nuts, coupling nuts, and slotted nuts in all ASTM grades.