CTX
Construction Lag Screw
- Construction lag screw for structural wood fastening.
- 3X Bronze coating for exterior or interior use.
- Round washer head star drive.
- Type-17 point, V-Cut notches, and aggressive knurl.
- DRJ certified under TER 1907-01 and IBC/IRC compliant.
| Material | Steel |
|---|---|
| Primary Applications | Log construction, timber frames, laminated beams, girders, ledger boards, stair rails, deck posts, fencing, SIP panels, pole barns, structural wood connections |
| Product Color | Bronze |
| Prop 65 Warning | WARNING: This product contains a chemical known to the State of California to cause cancer, or birth defects or other reproductive harm |
| Ter Number | 1907-01, 2104-04, 1907-04, 1907-03, 1911-05 |
Benefits & Features
- Built for Structural Wood Connections: Made for log construction, timber frames, beams, girders, ledgers, posts, fencing, SIP panels, and pole barns.
- 3X Bronze Coating: Triple layer ACQ compatible bronze coating is built for exterior or interior use.
- Washer Head Strength: Built-in washer head increases pull-through strength.
- Lower-Torque Drive: Peak Performance™ Lubrication, V-Cut notches, and aggressive knurl help the screw drive smoother and draw lumber together.
- Type-17 Point: Starts fast and helps drive without pre-drilling in most wood applications.
- DRJ Certified: Third-party certified by DRJ under TER 1907-01.
- IBC and IRC Compliant: Listed as International Building Code (IBC) and International Residential Code (IRC) compliant.
Videos
CTX Product Drill Down
CTX Video demo
SKU Specifications
| SKU | Description | Gauge | Screw Length | Drive Size | Quantity Per Selling Unit | Bit Included |
|---|---|---|---|---|---|---|
| CTX153 | 15 x 3" CTX Bronze T-30 Round Washer Head Construction Lag Screw, Bulk Carton | 15 | 3 | T-30 | 500 | No |
| CTX15212-100 | 15 x 2-1/2" CTX Bronze T-30 Round Washer Head Construction Lag Screw, 100 Count Bucket | 15 | 2-1/5 | T-30 | 100 | Yes |
| CTX15212 | 15 x 2-1/2" CTX Bronze T-30 Round Washer Head Construction Lag Screw, Bulk Carton | 15 | 2-1/2 | T-30 | 600 | No |
| CTX152-100 | 15 x 2" CTX Bronze T-30 Round Washer Head Construction Lag Screw, 100 Count Bucket | 15 | 2 | T-30 | 100 | Yes |
| CTX152 | 15 x 2" CTX Bronze T-30 Round Washer Head Construction Lag Screw, Bulk Carton | 15 | 2 | T-30 | 700 | No |
| CTX178-25 | 17 x 8" CTX Bronze T-40 Round Washer Head Construction Lag Screw, 25 Count Bucket | 17 | 8 | T-40 | 25 | Yes |
| CTX178-100 | 17 x 8" CTX Bronze T-40 Round Washer Head Construction Lag Screw, 100 Count Bucket | 17 | 8 | T-40 | 100 | Yes |
| CTX178 | 17 x 8" CTX Bronze T-40 Round Washer Head Construction Lag Screw, Bulk Carton | 17 | 8 | T-40 | 250 | No |
| CTX146-100 | 14 x 6" CTX Bronze T-25 Round Washer Head Construction Lag Screw, 100 Count Bucket | 14 | 6 | T-25 | 100 | Yes |
| CTX146 | 14 x 6" CTX Bronze T-25 Round Washer Head Construction Lag Screw, Bulk Carton | 14 | 6 | T-25 | 400 | No |
| CTX145-100 | 14 x 5" CTX Bronze T-25 Round Washer Head Construction Lag Screw, 100 Count Bucket | 14 | 5 | T-25 | 100 | Yes |
| CTX145 | 14 x 5" CTX Bronze T-25 Round Washer Head Construction Lag Screw, Bulk Carton | 14 | 5 | T-25 | 500 | No |
| CTX1716 | 17 x 16" CTX Bronze T-40 Round Washer Head Construction Lag Screw, Bulk Carton | 17 | 16 | T-40 | 250 | No |
| CTX1714-50 | 17 x 14" CTX Bronze T-40 Round Washer Head Construction Lag Screw, 50 Count Bucket | 17 | 14 | T-40 | 50 | Yes |
| CTX1714 | 17 x 14" CTX Bronze T-40 Round Washer Head Construction Lag Screw, Bulk Carton | 17 | 14 | T-40 | 250 | No |
| CTX1712-50 | 17 x 12" CTX Bronze T-40 Round Washer Head Construction Lag Screw, 50 Count Bucket | 17 | 12 | T-40 | 50 | Yes |
| CTX1712 | 17 x 12" CTX Bronze T-40 Round Washer Head Construction Lag Screw, Bulk Carton | 17 | 12 | T-40 | 250 | No |
| CTX177-25 | 17 x 7" CTX Bronze T-40 Round Washer Head Construction Lag Screw, 25 Count Bucket | 17 | 7 | T-40 | 25 | Yes |
| CTX177-100 | 17 x 7" CTX Bronze T-40 Round Washer Head Construction Lag Screw, 100 Count Bucket | 17 | 7 | T-40 | 100 | Yes |
| CTX177 | 17 x 7" CTX Bronze T-40 Round Washer Head Construction Lag Screw, Bulk Carton | 17 | 7 | T-40 | 250 | No |
| CTX176-25 | 17 x 6" CTX Bronze T-40 Round Washer Head Construction Lag Screw, 25 Count Bucket | 17 | 6 | T-40 | 25 | Yes |
| CTX144-100 | 14 x 4" CTX Bronze T-25 Round Washer Head Construction Lag Screw, 100 Count Bucket | 14 | 4 | T-25 | 100 | Yes |
| CTX144 | 14 x 4" CTX Bronze T-25 Round Washer Head Construction Lag Screw, Bulk Carton | 14 | 4 | T-25 | 500 | No |
| CTX143-100 | 14 x 3" CTX Bronze T-25 Round Washer Head Construction Lag Screw, 100 Count Bucket | 14 | 3 | T-25 | 100 | Yes |
| CTX143 | 14 x 3" CTX Bronze T-25 Round Washer Head Construction Lag Screw, Bulk Carton | 14 | 3 | T-25 | 600 | No |
| CTX14212-100 | 14 x 2-1/2" CTX Bronze T-25 Round Washer Head Construction Lag Screw, 100 Count Bucket | 14 | 2-1/2 | T-25 | 100 | Yes |
| CTX1710-50 | 17 x 10" CTX Bronze T-40 Round Washer Head Construction Lag Screw, 50 Count Bucket | 17 | 10 | T-40 | 50 | Yes |
| CTX1710 | 17 x 10" CTX Bronze T-40 Round Washer Head Construction Lag Screw, Bulk Carton | 17 | 10 | T-40 | 250 | No |
| CTX156-BB | 15 x 6" CTX Bronze T-30 Round Washer Head Construction Lag Screw, Bulk Bucket | 15 | 6 | T-30 | 300 | No |
| CTX156-25 | 15 x 6" CTX Bronze T-30 Round Washer Head Construction Lag Screw, 25 Count Bucket | 15 | 6 | T-30 | 25 | Yes |
| CTX156-100 | 15 x 6" CTX Bronze T-30 Round Washer Head Construction Lag Screw, 100 Count Bucket | 15 | 6 | T-30 | 100 | Yes |
| CTX176-100 | 17 x 6" CTX Bronze T-40 Round Washer Head Construction Lag Screw, 100 Count Bucket | 17 | 6 | T-40 | 100 | Yes |
| CTX176 | 17 x 6" CTX Bronze T-40 Round Washer Head Construction Lag Screw, Bulk Carton | 17 | 6 | T-40 | 250 | No |
| CTX175-25 | 17 x 5" CTX Bronze T-40 Round Washer Head Construction Lag Screw, 25 Count Bucket | 17 | 5 | T-40 | 25 | Yes |
| CTX175-100 | 17 x 5" CTX Bronze T-40 Round Washer Head Construction Lag Screw, 100 Count Bucket | 17 | 5 | T-40 | 100 | Yes |
| CTX14212 | 14 x 2-1/2" CTX Bronze T-25 Round Washer Head Construction Lag Screw, Bulk Carton | 14 | 2-1/2 | T-25 | 750 | No |
| CTX142-100 | 14 x 2" CTX Bronze T-25 Round Washer Head Construction Lag Screw, 100 Count Bucket | 14 | 2 | T-25 | 100 | Yes |
| CTX142 | 14 x 2" CTX Bronze T-25 Round Washer Head Construction Lag Screw, Bulk Carton | 14 | 2 | T-25 | 1000 | No |
| CTX14112-100 | 14 x 1-1/2" CTX Bronze T-25 Round Washer Head Construction Lag Screw, 100 Count Bucket | 14 | 1-1/2 | T-25 | 100 | Yes |
| CTX14112 | 14 x 1-1/2" CTX Bronze T-25 Round Washer Head Construction Lag Screw, Bulk Carton | 14 | 1-1/2 | T-25 | 1500 | No |
| CTX156 | 15 x 6" CTX Bronze T-30 Round Washer Head Construction Lag Screw, Bulk Carton | 15 | 6 | T-30 | 300 | No |
| CTX155-BB | 15 x 5" CTX Bronze T-30 Round Washer Head Construction Lag Screw, Bulk Bucket | 15 | 5 | T-30 | 350 | No |
| CTX155-25 | 15 x 5" CTX Bronze T-30 Round Washer Head Construction Lag Screw, 25 Count Bucket | 15 | 5 | T-30 | 25 | Yes |
| CTX155-100 | 15 x 5" CTX Bronze T-30 Round Washer Head Construction Lag Screw, 100 Count Bucket | 15 | 5 | T-30 | 100 | Yes |
| CTX155 | 15 x 5" CTX Bronze T-30 Round Washer Head Construction Lag Screw, Bulk Carton | 15 | 5 | T-30 | 350 | No |
| CTX154-BB | 15 x 4" CTX Bronze T-30 Round Washer Head Construction Lag Screw, Bulk Bucket | 15 | 4 | T-30 | 400 | No |
| CTX175 | 17 x 5" CTX Bronze T-40 Round Washer Head Construction Lag Screw, Bulk Carton | 17 | 5 | T-40 | 300 | No |
| CTX174-25 | 17 x 4" CTX Bronze T-40 Round Washer Head Construction Lag Screw, 25 Count Bucket | 17 | 4 | T-40 | 25 | Yes |
| CTX174-100 | 17 x 4" CTX Bronze T-40 Round Washer Head Construction Lag Screw, 100 Count Bucket | 17 | 4 | T-40 | 100 | Yes |
| CTX174 | 17 x 4" CTX Bronze T-40 Round Washer Head Construction Lag Screw, Bulk Carton | 17 | 4 | T-40 | 350 | No |
| CTX1716-50 | 17 x 16" CTX Bronze T-40 Round Washer Head Construction Lag Screw, 50 Count Bucket | 17 | 16 | T-40 | 50 | Yes |
| CTX141-100 | 14 x 1" CTX Bronze T-25 Round Washer Head Construction Lag Screw, 100 Count Bucket | 14 | 1 | T-25 | 100 | Yes |
| CTX141 | 14 x 1" CTX Bronze T-25 Round Washer Head Construction Lag Screw, Bulk Carton | 14 | 1 | T-25 | 2000 | No |
| CTX154-25 | 15 x 4" CTX Bronze T-30 Round Washer Head Construction Lag Screw, 25 Count Bucket | 15 | 4 | T-30 | 25 | Yes |
| CTX154-100 | 15 x 4" CTX Bronze T-30 Round Washer Head Construction Lag Screw, 100 Count Bucket | 15 | 4 | T-30 | 100 | Yes |
| CTX154 | 15 x 4" CTX Bronze T-30 Round Washer Head Construction Lag Screw, Bulk Carton | 15 | 4 | T-30 | 400 | No |
| CTX153-BB | 15 x 3" CTX Bronze T-30 Round Washer Head Construction Lag Screw, Bulk Bucket | 15 | 3 | T-30 | 500 | No |
| CTX153-25 | 15 x 3" CTX Bronze T-30 Round Washer Head Construction Lag Screw, 25 Count Bucket | 15 | 3 | T-30 | 25 | Yes |
| CTX15312-25 | 15 x 3-1/2" CTX Bronze T-30 Round Washer Head Construction Lag Screw, 25 Count Bucket | 15 | 3-1/2 | T-30 | 25 | Yes |
| CTX15312-100 | 15 x 3-1/2" CTX Bronze T-30 Round Washer Head Construction Lag Screw, 100 Count Bucket | 15 | 3-1/2 | T-30 | 100 | Yes |
| CTX15312 | 15 x 3-1/2" CTX Bronze T-30 Round Washer Head Construction Lag Screw, Bulk Carton | 15 | 3-1/2 | T-30 | 500 | No |
| CTX153-100 | 15 x 3" CTX Bronze T-30 Round Washer Head Construction Lag Screw, 100 Count Bucket | 15 | 3 | T-30 | 100 | Yes |
Ready to Stock Big Timber on Your Shelf?
Have a question, need a quote, or just want to move product faster? We’re ready when you are.