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  • Lifetime 40 Year Warranty Long Life Fastener.
  • Designed as an alternative to the zinc-aluminum alloy head. It is also used to attach steel roofing used in post-frame & residential construction. The smaller cupped HWH provides an attractive low-profile appearance versus larger HWH fasteners.
  • 304 Stainless Steel cap provides lifetime warranty against red rust on the head & washer. You may obtain a free copy of the written warranty upon request.
  • ST-XL™ is an excellent choice for GALVALUME or other long-life metal roofs.
  • The combination of a sharp point & Type 17 drills 29 & 26 gauge consistently & eliminates the metal shavings that can embed themselves in the EPDM rubber washer.

FOR PROPER INSTALLATION, THE USE OF IMPACT DRIVERS ARE NOT RECOMMENDED FOR POWDER COATED OR ANY WET PAINTED FASTENER
PULLOUT & PULLOVER VALUES ARE DETERMINED IN THE ST FASTENING SYSTEMS ENGINEERING LABORATORY & BASED UPON WOOD DENSITIES FOUND IN PRESENT DAY WOOD PRODUCTS.
CHECK WITH ALUMINUM SUPPLIER FOR COMPATIBILITY WHEN USED IN COASTAL OR MARINE APPLICATIONS.


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Check out other Stainless Steel Fastening System Fasteners


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40 year warranty lifetime


SIZE CARTON QTY. WEIGHT/M
9 x 1” 3000 9.0
9 x 1 1/2” 2500 11.9
9 x 2” 2000 14.0
9 x 2 1/2” 1500 16.0
9 x 3” 1000 18.4
12 x 3/4" Stitch 2500 16.0

ROLLING CHANGE
The new Micro-Bit will completely replace the Type 17 sharp point as current inventories are depleted. Sizes listed in GREEN will continue to be sharp points, as inventory levels of those turn over at a slower rate.

  ST-XL ST-XL STITCH
HEAD STYLE 1/4” CHWH* 1/4” CHWH*
DRILL POINT MICRO-BIT™ TYPE 17
MAJOR DIAMETER .181/.178 .215/.209
MINOR DIAMETER .133/.127 .164/.157
WASHER/HEAD DIAMETER .500 .500
HEAD ACROSS FLATS NOM .250" NOM .250"
ULT. TENSILE STRENGTH 2100 LBS. 2900 LBS.
MIN. TORSIONAL STRENGTH 48 IN-LBS. 88 IN-LBS.
NOM. SHEAR STRENGTH 1800 LBS. 1962 LBS.

*CHWH-Cupped Hex Washer Head

SUBSTRATE PENETRATION ST-XL VALUE ST-XL STITCH VALUE
3/4” PLY FULL 668 N/A
3/4” PLY 1/2" N/A 260
5/8" PLY FULL 384 N/A
5/8" PLY 1/2" N/A 233
1/2” PLY FULL 242 N/A
1/2” PLY 1/2" N/A 202
7/16” OSB FULL 224 N/A
7/16” OSB 1/2" N/A 164
2 X Y.PINE 1” 852 N/A
2 X Y.PINE 1 1/2" 1030 N/A
2 X Y.PINE 1/2" N/A 331
2 XY SPF 1" 604 N/A
2 XY SPF 1 1/2" 855 N/A
2 XY SPF 1/2" N/A 237
SUBSTRATE GAUGE THICKNESS ST-XL VALUE ST-XL STITCH VALUE
AZ55 Galvalume 26 .018 726 629
AZ55 Galvalume 29 .014 573 378
AZ55 Galvalume 24 .024 869 721
Aluminum 21 .028 380 N/A
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ST-XL has a 304 SS Cap on the head and washer. It will never red rust. Cupped head design provides low profile appearance.

ST-XL has a 304 SS Cap on the head and washer. It will never red rust. Cupped head design provides low profile appearance.

Micro-Bit™ point is fully threaded to the end and is designed for the quickest penetration through light gauge steel panels.

Micro-Bit™ point is fully threaded to the end and is designed for the quickest penetration through light gauge steel panels.


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