ST Reamer Screw

Family of screws designed to attach plywood & dimensional lumber to steel
thickness up to .250”

Small wings help bore a clearance hole to help prevent premature thread
engagement in the wood. The wings break off after drilling is completed.

Wafer head design is used for plywood applications. Flat head design is used for
lumber applications.

Applications include flooring in steel frame homes & truck body beds.

SIZE HEAD STYLE CARTON QTY. WEIGHT/M
10-16 x 1-5/8″ #2 Square/Phillips Combo 3500 9.2/M
12-24 x 2″ #3 PFH 2000 17.5/M
12-24 x 2-1/2″ #3 PFH 2000 19.5/M
1/4-20 x 2-3/4″ #3 PFH 1500 28.6/M
1/4-20 x 3-1/4″ 6 LOBE 1000 35.0/M
DRILL POINT MAJOR DIAMETER MINOR DIAMETER HEAD DIAMETER POINT DIAMETER ULT. TENSILE STRENGTH MIN. TORSIONAL STRENGTH NOM. SHEAR STRENGTH
10-16 Winged SD .189/.183 .141/.135 .440 NOM. .156/.151 1920 LBS. 61 IN-LBS. 1633 LBS.
12-24 Winged SD .216/.209 .165 REF. .389 NOM. .191/.197 2800 LBS. 100 IN-LBS. 2000 LBS.
1/4-20 Winged SD .250/.242 .187 REF. .507/.452 .226/.220 4270 LBS. 168 IN-LBS. 3000 LBS.
MATERIAL
HRS PRIMED ONLY A36 HRS** G-90 GALVANIZED
NOM. GAUGE 16 14 12 3/16″ 1/4″ 18
THICKNESS .065 .070 .106 .187 .250 .047
10-16 847 916 1085 1920* 587
12-24 832 947 1480 2582 2800*
1/4-20 970 1165 1838 3145 4270*
MATERIAL DESIGNATION CDX PLYWOOD 2 x YELLOW PINE
WASHER/HEAD DIAMETER THICKNESS 15/32″ (NOM 1/2″) (1.5 ACTUAL)
10-16 (See Notes 3) 596 (See Notes 1) 680
12-24 1302
1/4-20 1383

NOTES:

  1. 1-1 /2” LENGTH FULLY PENETRATES OSB AND PLYWOOD SHEETING
  2. 26 AND 29 GA. VALUES SHOWN WERE OBTAINED USING 80 KSI STEEL SHEETING. 24, 22, AND 20 GA. VALUES WERE OBTAINED USING 50 KSI MINIMUM STEEL SHEETING.
  3. BMT DENOTES BASE METAL THICKNESS AFTER REMOVAL OF PAINT FINISH AND METALLIC PROTECTIVE COATING.
  4. ALL STRENGTH VALUES SHOWN ARE ULTIMATE VALUES, EXPRESSED IN LBS. APPLY AN APPROPRIATE SAFETY FACTOR TO OBTAIN DESIGN LIMITS.

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