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TECHNICAL BULLETIN
400 SERIES STAINLESS FASTENERS
Type of Fasteners
A, AB,B Number 14 Diameter.
Type of Material
Fasteners are to be made from a good quality heading wire in the 400 Series. Screws
to be heat treated after cold forming to produce a Rockwell Hardness of C-38 minimum.
Type of Plating
X-Tend finish provides two layers of protection. The top seal is an
effective barrier to the environmental elements present. While the zinc
layer affords a secondary layer for even further protection. These two layers
work together to provide an exceptionally corrosion resistant coating.
Tool Selection
An electric screwgun with a maximum RPM of 600 is the suggested tool.
Recommended Usage
Type B to be used for sheet to structure. Type AB to be used to for sheet to light
gauge purlins or laps. Type A lab only.
PERFORMANCE TESTS
Test Results
Strength of Fastener
| |
1/4" Type B |
#14 Type A & AB |
| Minimum tensile strength |
3,500 lbs. |
3,150 lbs. |
| Minimum shear strength |
2,580 lbs. |
2,400 lbs. |
| Minimum torsion strength |
150 inch lbs. |
140 inch lbs. |
Test Results
Pull Out Tests
To determine the tension required to pull a properly driven screw out of
a steel member.
Average Pull Out Values in Lbs.
Thickness
of Steel |
Hardness of
Steel Rockwell B |
Drilled
Hole Size |
1/4" Type B |
#14 Type AB |
#14 Type A |
| 20 gauge |
50 |
3/16" |
|
|
505 |
| 18 gauge |
60 |
3/16" |
855 |
650 |
682 |
| 16 gauge |
64 |
#8 |
1090 |
1150 |
990 |
| 14 gauge |
64 |
#8 |
1325 |
1460 |
1505 |
| 12 gauge |
64 |
#7 |
2480 |
1777 |
|
| 1/4" gauge |
60 |
#1 |
4490 |
|
|
| 1/3" gauge |
62 |
#1 |
4915 |
|
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Test Results
Pull Over Tests
To determine the tension required to pull steel over fastener head.
Thickness
of Steel |
Hardness of
Steel Rockwell B |
Drilled
Hole Size |
Washer
Diameter |
Average Pull Over
in Lbs. |
| 20 gauge |
56 |
3/16" |
5/8 Stainless |
1605 |
| 22 gauge |
52 |
3/16" |
5/8 Stainless |
1400 |
| 24 gauge |
50 |
3/16" |
5/8 Stainless |
1090 |
| 26 gauge |
49 |
1/8" |
5/8 Stainless |
755 |
The test results shown are believed to be reliable.
However, variances in testing and actual field
conditions may alter the results. There is no
expressed or implied warranty on the test Data.
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