receive our newsletterdownload free catalogorder online - find a dealer

Star Drive Wood Screw Strength Specifications

Here at Screw Products, Inc. we provide the most useful, reliable, and quality fasteners in the world today. The charts you see below are a summary of a complete battery of tests performed on our fasteners by Trace Laboratories. For more information on these tests, or a copy of the complete report, please call us at 1 (877) 844-8880 today.

Screw Pull Out Force (Thread Depth & LBS)*   Screw Pull Through (LBS)*   Screw Shank Shear – Metal*  
Screw Type Depth SYP WRC   Screw Type SYP WRC   Screw Type LBS  
CCTX516600 2½” 1988 885   CCTX516600 2305 1844   SSTX08200 1000  
CTX 381000 3” 2626 1336.6   CTX 381000 3712 1964   SSTH09300 1100  
YTX 151000 2½” 2150 866.4   YTX 151000 1929 1150   SSTX10400 1325  
YTX 147000 2½” 1616 962.6   YTX 147000 1722 1276   YTX08212 1500  
                YTX09300 2075  
Screw Lap Shear (LBS)   All tests performed by:
Trace Laboratories
1150 W. Euclid Avenue
Palatine, IL 60067-7368
Ph. (847) 934-5300
Fx. (847) 934-4600
www.tracelabs.com
  YTX10400 2255  
Screw Type SYP WRC     CCTX516600 3700  
CCTX516600 1220 767     CTX381000 3825  
CTX381000 1602 1148     YTX14700 2800  
YTX151000 1127 997     YTX15100 2650  
YTX14700 1269 691        
 
Pull Out Testing By Material (Thread Depth & LBS)
  Southern Yellow Pine Douglas Fir Plywood Chip Board Particle Board Redwood
Screw Type LBS Depth LBS Depth LBS Depth LBS Depth LBS Depth LBS Depth
SSTH09300 1110 1½” 995 1½” 650 .75” 415 1” 440 ¾” 292.5 ¾”
THBTX09300 1375 1½” 1025 1½” 685 .75” 390 1” 392.5 ¾” 307.5 ¾”
YTX08212 1135 1½” 825 1½” 657 .75” 370 1” 400 ¾” 312.5 ¾”
SSTX09300 1250 1½” 767.5 1½” 512.6 .75” 500 1” 432.5 ¾” 362.5 ¾”
CCTX516400 1285 1½” 645 1½” 670 .75” - - - - - -
CCTX516500 2275 1½” 735 1½” 590 .75” - - - - - -
YTX15100 2000 1½” 862.5 1½” 630 .75” 630 1” 445 ¾” 200 ¾”
 
Average Shear Strength – Wood**   SYP: Southern Yellow Pine
WRC: Western Red Cedar
To request the full 52 page Report, please contact us by phone or email. Specific Data Sheets per test are also available. Screws that share the same diameter and metal type will have equal values to those tested. For Example: Our SSTX09212 9x2½”  will share the same shear strength as our SSTX09300 9x3”
* 5 Test Average
** 2 Test Average
receive our newsletterdownload free catalogorder online - find a dealer