Galvanized drop forged timber bolts sometimes called mushroom head bolts or dome head bolts can be used in both marine and treated wood applications due to the heavy galvanization applied to the bolts. The underside of the oversized rounded bolt head has four nubs or fins which prevent the bolt from turning in the timber (some manufacturers only have two fins). Timber bolts can be used for many of the same applications as machine bolts and the oversized head eliminates the need for a washer on the bolt head end.
Timber Bolt Sizes
We carry timber bolts in both 5/8" and 3/4" diameters with lengths starting at 8" all the way up to 36" in length. No matter your application we have the timber bolt size for you. We also carry a full collection of square washers, square curved washers, round washers and coil lock washers.
| BT8808 | Bolt, timber, 5/8" x 8" w/ hex nut - HDG | $3.00 |
| BT8810 | Bolt, timber, 5/8" x 10" w/ hex nut - HDG | $3.25 |
| BT8812 | Bolt, timber, 5/8" x 12" w/ hex nut - HDG | $4.00 |
| BT8814 | Bolt, timber, 5/8" x 14" w/ hex nut - HDG | $4.30 |
| BT8816 | Bolt, timber, 5/8" x 16" w/ hex nut - HDG | $4.70 |
| BT8818 | Bolt, timber, 5/8" x 18" w/ 6" thread, w/ hex nut - HDG | $5.00 |
| BT8820 | Bolt, timber, 5/8" x 20" w/ 6" thread, w/ hex nut - HDG | $5.10 |
| BT8822 | Bolt, timber, 5/8" x 22" w/ 6" thread, w/ hex nut - HDG | $5.20 |
| BT8824 | Bolt, timber, 5/8" x 24" w/ 6" thread, w/ hex nut - HDG | $5.40 |
| BT8826 | Bolt, timber, 5/8" x 26" w/ 6" thread, w/ hex nut - HDG | $5.60 |
| BT8828 | Bolt, timber, 5/8" x 28" w/ 6" thread, w/ hex nut - HDG | $5.75 |
| BT8830 | Bolt, timber, 5/8" x 30" w/ 6" thread, w/ hex nut - HDG | $6.10 |
| BT8836 | Bolt, timber, 5/8" x 36" w/ 6" thread, w/ hex nut - HDG | $6.50 |
| BT8908 | Bolt, timber, 3/4" x 8" w/ hex nut - HDG | $3.50 |
| BT8910 | Bolt, timber, 3/4" x 10" w/ hex nut - HDG | $3.75 |
| BT8912 | Bolt, timber, 3/4" x 12" w/ hex nut - HDG | $4.00 |
| BT8914 | Bolt, timber, 3/4" x 14" w/ hex nut - HDG | $4.50 |
| BT8916 | Bolt, timber, 3/4" x 16" w/ hex nut - HDG | $4.75 |
| BT8918 | Bolt, timber, 3/4" x 18" w/ hex nut - HDG | $5.25 |
| BT8920 | Bolt, timber, 3/4" x 20'' w/ 6" thread, w/ hex nut - HDG | $5.50 |
| BT8922 | Bolt, timber, 3/4" x 22'' w/ 6" thread, w/ hex nut - HDG | $5.90 |
| BT8924 | Bolt, timber, 3/4" x 24'' w/ 6" thread, w/ hex nut - HDG | $6.10 |
| BT8926 | Bolt, timber, 3/4" x 26'' w/ 6" thread, w/ hex nut - HDG | $6.50 |
| BT8928 | Bolt, timber, 3/4" x 28'' w/ 6" thread, w/ hex nut - HDG | $6.75 |
| BT8930 | Bolt, timber, 3/4" x 30" w/ 6" thread, w/ hex nut - HDG | $6.85 |
| BT8932 | Bolt, timber, 3/4" x 32" w/ 6" thread, w/ hex nut - HDG | $7.00 |
| BT8934 | Bolt, timber, 3/4" x 34" w/ 6" thread, w/ hex nut - HDG | $7.50 |
| BT8936 | Bolt, timber, 3/4" x 36" w/ 6" thread, w/ hex nut - HDG | $7.75 |
Washers
 H.D. Galvanized Square and Curved Square Washers |
 H.D. Galvanized Lock Washers |
 H.D. Galvanized Dock Washers |
 H.D. Galvanized Ogee Washers |
| SC6821 | Washer, curved square, 2-1/4" x 3/16", for 5/8" bolt - HDG | $0.35 |
| SC6829 | Washer, curved square, 4" x 4" x 1/4", for 7/8" bolt - HDG | $1.00 |
| SC1074 | Washer, flat square, 2" x 1/8" for 5/8" bolt - HDG | $0.25 |
| WSFG8902 | Washer, flat square, 2" x 3/16" for 3/4" bolt - HDG | $0.30 |
| SC1076 | Washer, flat square, 2-1/4" x 3/16" for 3/4" bolt - HDG | $0.40 |
| SC1075 | Washer, flat square, 2-1/4" x 3/16" for 5/8" bolt - HDG | $0.40 |
| SC1079 | Washer, flat square, 3" x 1/4" for 3/4" bolt - HDG | $0.75 |
| SC1078 | Washer, flat square, 3" x 3/16" for 3/4" bolt - HDG | $0.80 |
| SC1080 | Washer, flat square, 4" x 3/16" for 3/4" bolt - HDG | $0.90 |
| SC139 | Washer, lock, 5/8" - HDG | $0.19 |
| WDG88 | Washer, NY dock, 3'' x 1/4" for 5/8" bolt - HDG | $0.70 |
| WDG89 | Washer, NY dock, 3'' x 1/4" for 3/4" bolt - HDG | $0.75 |
| WDG91 | Washer, NY dock, 3-1/4" x 1/4" for 1" bolt - HDG | $0.85 |
| WDG91 | Washer, NY dock, 3-1/4" x 1/4" for 1" bolt - HDG | $0.85 |
| WDG93 | Washer, NY dock, 3-1/4" x 1/4" for 1-1/4" bolt - HDG | $0.85 |
| WOGG88 | Washer, ogee for 5/8" bolt - HDG | $0.70 |
| WOGG89 | Washer, ogee for 3/4" bolt - HDG | $0.90 |
| WOGG91 | Washer, ogee for 1" bolt - HDG | $1.60 |
| WRGT8802.5 | Washer, round, 2-1/2'' x 1/4'' for 5/8'' bolt - HDG | $0.50 |
| WRG8902.5 | Washer, round, 2-1/2" x 1/8" for 3/4" bolt - HDG | $0.40 |
| WRG8802.5 | Washer, round, 2-1/2" x 1/8" for 5/8" bolt - HDG | $0.45 |
| WRG9103 | Washer, round, 3" x 3/16" for 1" bolt - HDG | $0.50 |
