Page 1 of 1
Date: September 12, 2013
REV-03
TCS.PSL.T25.Z
Fastenal Product Standard
Thread Cutting Screw, Pan Head, Slotted, Type BT “25”, Zinc Plated
The information below lists the required dimensional, chemical and physical characteristics of the products in this purchase order. If
the order received does not meet these requirements, it may result in a supplier corrective action request, which could jeopardize your
status as an approved vendor. Unless otherwise specified, all referenced consensus standards must be adhered to in their entirety.
A
H
R
J
T
Size
Head Diameter
Head Height
Head Radius
Slot Width
Slot Depth
2
4
6
8
10
1/4
Max.
.167
.219
.270
.322
.373
.492
Max.
.053
.068
.082
.096
.110
.144
Min.
.155
.205
.256
.306
.357
.473
Min.
.045
.058
.072
.085
.099
.130
Max.
.035
.042
.046
.052
.061
.087
Max.
.031
.039
.048
.054
.060
.075
Min.
.023
.031
.039
.045
.050
.064
Max.
.031
.040
.050
.058
.068
.087
Min.
.022
.030
.037
.045
.053
.070
D
d
S
Determinant
P
Major
Minor
Point
Taper
for Point
Point Diameter
Length**
Max. Min. Max. Min.
Ref.
Max. Min.
2-32
.088
.082
.064
.060
.058
.062
.047
5/32
4-24
.114
.108
.086
.082
.079
.083
.063
3/16
6-20
.139
.132
.104
.099
.095
.100
.075
1/4
8-18
.166
.159
.122
.116
.112
.111
.083
9/32
10-16
.189
.182
.141
.135
.130
.125
.094
5/16
1/4-14 .246
.237
.192
.185
.179
.143
.107
3/8
** Screws equal to or shorter than this length shall have a short screw taper length;
screws longer than this length shall have along screw taper length
Size
Specification Requirements:
•
Standard:
Drive Style:
Material:
Mechanical
Requirements:
Thread Requirements:
•
Finish:
•
•
•
•
ASME B18.6.3
Slotted
Carbon Steel
ASME B18.6.3
Rolled Thread per ASME B18.6.3
(ASME Designation Type BT)
Fe/Zn 3AT Per ASTM F1941