square head bolts for sale, brand-new and used.

The Hillman Group 812509 Hot Dipped Galvanized Carriage Bolt, 1/4-Inch x 1-1/2-Inch, 100-Pack

The box will contain 25- 1/2-13 x 4" long galvanized bolts. These bolts have a special head for use in uni-strut channel but can be used just like a regular hex or square headed bolt. Some may have slight rust but doesn't affect the use.

These bolts are great for hinges and knockers to doors. Mounting what ever you can think of around the house where you don't want an ugly screw. You can have them plated, forge the heads or just use them as is.

These bolts are great for decorating doors. You can have them plated, forge the heads or just use them as is.  Only being 1" long they are perfect  for 1-1/2" thick doors.

This is a lot of EIGHT antique lag bolts likely manufatured in the 1930s or 1940s. I am unsure of the maker. They are new old stock pieces - but without their original packaging.

Custom Made 1" Sq Head Clavos style structural lags. These are not ground down square head lags but fully welded / built up forged centers. Hand ground to pyramid shape shown.

STARRETT 4 Piece Combination Square Set - Model: 435-12-16R Blade Length: 12" Protractor Head Type: Reversible Graduation: 16R-Quick Reading 32nds, 64ths, Aircraft Quick Reading 50ths & 100ths. Type of Reading: Inch With Square Head, Center Head, Blade & Protractor Head Applications Used by toolmakers, mechanics and carpenters as a level, depth gage, height gage scribing gage, center gage, rule and plumb.

This is a Starrett No.435-12-4R, 12" 4 piece Combination Square, Complete Set with Cast Black Wrinkle Finish Square Head, Center Head, 180 Degree direct reading reversible Protractor Head and Hardened Steel, Blade in 8ths, 16ths, Quick reading 32nds, and 64ths. Reversible Lock Bolts, Spirit Level in both square head and protractor head, Marking scribe in square head. Listed as used but in like new condition.

This is a Starrett No.11H-12-4R, 12" 4 piece Combination Square, Complete Set with Cast Black Wrinkle Finish Square Head, Center Head C11-1224 EDP No.50074, and 180 Degree direct reading reversible Protractor Head 491-12-4R EDP No.52521 and Hardened and tempered Steel, Blade in 8ths, 16ths, Quick reading 32nds, and 64ths. Reversible Lock Bolts, Spirit Level in both square head and protractor head, Marking scribe in square head. New old stock.

STARRETT 4 Piece Combination Square Set - Model: C434-12-16R Blade Length: 12" Protractor Head Type: Reversible Graduation: Aircraft Quick Reading 50ths & 100ths. Type of Reading: Inch 51549 12" 4 PIECE COMBO SQR ST - STARRETT

Used it in EXC condition...as seen in pics STARRETT 4 Piece Combination Square Set - Model: 434-12-4R Blade Length: 12" Protractor Head Type: Reversible Graduation: 4R-8ths, 16ths,Quick Reading Type of Reading: Inch 51542 12" 4 PIECE COMBO S

Quality products at affordable prices. Check out our

25 PIECES 1/2 X 6 Square Head Lag Bolts Screws Plain Steel The head of the bolt is 3/4" square FREE SHIPPING IN THE USA

Starrett C434-12-16R 12-Inch Combination Set with Forged and Hardened Steel Square and Center Head.

This is a Mitutoyo No.180-906 12" 4 piece Combination Square, Complete Set with Satin Chrome 180-502 hardened and tempered SS Blade, 64ths, 32nds, 50ths, and 100ths readings. Hardened Square Head 180-102, Hardened Center Head 180-202, 180 Degree direct reading reversible Protractor Head 180-301 and Reversible Lock Bolts, Spirit Level in both square head and protractor head, Marking scribe in square head Used in excellent condition. No owners markings, Box shows wear.

51548 12" 4 PIECE COMBO SQR ST - STARRETT With Square Head, Center Head, Blade & Protractor Head Applications Used by toolmakers, mechanics and carpenters as a level, depth gage, height gage scribing gage, center gage, rule and plumb. Features With reversible lock bolts, spirit level in both square head and protractor head. Direct reading double 180° protractor scale.

USA Daily Deals Starrett 11HC-12-4R 12-Inch Combination Square with Cast Iron Head and Black Wrinkle Finish

Great for that old rustic look on beams and other projects! Black steel 5/8" x 2-1/2" square head lag bolts/screws. New old stock.

51558 18" 4 PIECE COMBO SQR ST - STARRETT With Square Head, Center Head, Blade & Protractor Head Applications Used by toolmakers, mechanics and carpenters as a level, depth gage, height gage scribing gage, center gage, rule and plumb. Features With reversible lock bolts, spirit level in both square head and protractor head. Direct reading double 180° protractor scale.