Alma Bolt Company & Prime Fasteners 1-800-526-2200

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Wood Application Screws

Wood Application Screws...

are designed specifically for use in wood applications. The threads are designed to give the greatest drilling and holding power when screwing into wood. The gimlet point style allows easy hole starting, while the smooth shank at the top allows the screw to seal the pieces of wood together as the screw is tightened.

Wood screws are available in zinc-plated steel, brass, 18-8 stainless steel, and galvanized steel; in sizes from #2 to #18 and lengths from 1/2" to 3".

Hex Lag Screws

Lag Screws (or lag bolts) are an ideal fastener when wood screws are too short or lightweight for the job, offering increased gripping power over wood screws. These screws can also be used in masonry applications with an expansion shield. Available in zinc plated steel and 18-8 stainless steel. Stocked in diameters from 1/4" to 5/8" and lengths from 1" to 8". Length is measured from under the head.

Group codes represented: HLS, SSHLS
Part# examples: 25100HLS

E
F
G
H
S
Basic Product Diameter
Threads Per Inch
Body Or Shoulder Diameter
Width Across Flats
Width Across Corners
Head Height
Shoulder Length
Max
Min
Basic
Max
Min
Max
Min
Basic
Max
Min
Min
1/4
0.2500
10
0.026
0.237
7/16
0.438
0.425
0.505
0.484
11/64
0.188
0.150
0.094
5/16
0.3125
9
0.324
0.298
1/2
0.500
0.484
0.577
0.552
7/32
0.235
0.195
0.125
3/8
0.3750
7
0.388
0.360
9/16
0.562
0.544
0.650
0.620
1/4
0.268
0.226
0.125
7/16
0.4375
7
0.452
0.421
5/8
0.625
0.603
0.722
0.687
19/64
0.316
0.272
0.156
1/2
0.5000
6
0.515
0.482
3/4
0.750
0.725
0.866
0.826
11/32
0.364
0.302
0.156
5/8
0.6250
5
0.642
0.605
15/16
0.938
0.906
1.083
1.033
27/64
0.444
0.378
0.312
3/4
0.7500
4 1/2
0.768
0.729
1 1/8
1.125
1.088
1.299
1.240
1/2
0.524
0.455
0.375
Tolerance on Length Nominal Screw Size Nominal Screw Length
  Thru 6 in. Over 6 in.
1/2 and smaller +/-0.12 +/-0.25
Over 1/2 +/-0.25 +/-0.25

Acoustical Eye Lag Screws

Made from zinc-plated steel, these screws are most widely used to hang suspended ceiling from wood framing. Also available in a galvanized finish for outdoor applications. We supply the drivers to fit a drill for installation. Screw guns are also available.

Available in sizes from 1/4" to 3/8" and lengths from 3" to 5".

Hanger Bolts

Available in diameters from #10 to 3/8 and lengths from 1 1/2" to 10".

Diameter & Thread Pitch
C
A
B
D
STANDARD LENGTH
MACHINE THREAD LENGTH
LAG THREAD LENGTH
CENTER SPACE
10 - 24
1 1/2
5/8
7/8
-
1 3/4
3/4
1
-
2
1
1
-
2 1/2
1
1 1/2
-
3
1 1/2
1 1/2
-
1/4 - 20
2 1/2
5/8
7/8
-
1 3/4
3/4
1
-
2
1
1
-
2 1/4
1
1 1/4
-
2 1/2
1
1 1/2
-
3
1 1/2
1 1/2
-
3 1/2
1 1/2
2
-
4
2
2
-
4 1/2
1 1/8
3
3/8
5
1 3/8
3
5/8
6
1 1/2
3
1 1/2
5/16 - 18
1 1/2
5/8
7/8
-
1 3/4
3/4
1
-
2
1
1
-
2 1/4
1
1 1/4
-
2 1/2
1
1 1/2
-
2 3/4
1 1/4
1 1/2
-
3
1 1/2
1 1/2
-
3 1/2
1 1/2
2
-
4
2
2
-
4 1/2
1 1/8
3
3/8
5
1 3/8
3
5/8
5 1/2
1 1/2
3
1
6
1 1/4
3
1 3/4
3/8 - 16
2
1
1
-
2 1/2
1
1 1/2
-
3
1 1/2
1 1/2
-
3 1/2
1 1/2
2
-
4
2
2
-
4 1/2
1 1/8
3
3/8
5
1 1/8
3
7/8
5 1/2
1 3/8
3
1 1/8
6
1 1/2
3
1 1/2
8
2 1/2
3
2 1/2
10
2 1/2
3
4 1/2

 

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