Listing ID #4865955
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Phillips flat head Wood Screws Manufacturers Suppliers in India
Flat heads are countersunk (cone shaped under the head) with a flat top. Phillips drives are X shaped for a phillips screw driver.
Stainless steel 18-8Zinc plated steelBrassShow Details
Frearson flat headFlat heads are countersunk (cone shaped under the head) with a flat top. Frearson drives are X shaped similar to phillips drive.
Silicon bronzeShow Details
Slotted flat headFlat heads are countersunk (cone shaped under the head) with a flat top. Slotted drives are simple slots for a flat bladed screw driver.
Stainless steel 18-8Zinc plated steelBrassSilicon bronzeShow Details
Slotted oval headOval heads are countersunk (cone shaped under the head) with a rounded top. Slotted drives are simple slots for a flat bladed screw driver.
Stainless steel 18-8BrassSilicon bronzeShow Details
Phillips round headRound heads are domed and look like half of a sphere. Phillips drives are X shaped for a phillips screw driver.
Zinc plated steelBrassShow Details
Slotted round headRound heads are domed and look like half of a sphere. Slotted drives are simple slots for a flat bladed screw driver.
Stainless steel 18-8Zinc plated steelBrassSilicon bronze
Approximate hole sizes for wood screws - hard wood and soft wood - are indicated below:
Standard Wood Screw Sizes and Predrilling Recommendations
Screw Size (Gauge)
#2
#3
#4
#5
#6
#7
#8
#9
#10
#12
#14
#16
#18
Head Bore Size
Actual Head Size
11/64
13/64
15/64
1/4
9/32
5/16
11/32
23/64
25/64
7/16
1/2
35/64
39/64
Min. Counterbore Dia.
3/8
9/16
5/8
Recommended Size
Screw Shank - Hole Size
3/32
7/64
1/8
9/64
5/32
3/16
7/32
Straight Pilot Drill Size
Hardwood
1/16
5/64
Softwood
Tapered Pilot Drill Size
17/64
19/64
Recommended Countersink Number
C3
C4
C5
C6
C7
C8
C9
C102
C12
C14
C169
C18
Drill Length Recommendations for Countersink/Taper Point Drill Combos
Tapered Drill Size
Short Length Drill
Min. Screw Length
11/16
3/4
7/8
13/16
Max. Screw Length *
15/16
1
1-1/8
1-1/4
1-7/16
1-9/16
Regular Length Drill
1-3/8
Max. Screw Length **
1-1/2
1-3/4
1-7/8
2-1/8
2-1/4
2-3/8
2-5/8
2-5/16
2-11/16
Long Length Drill
1-1/16
1-5/16
Max. Screw Length***
2
2-3/4
3
3-1/8
3-1/16
3-3/16
8” Long Drills
N/A
1-3/16
1-5/8
4-3/4
4-11/16
* = 1/2” to 3/4” of shank for chucking ** = 3/4” to 1” of shank for chucking *** = Set screws positioned at end of twist
Diameter
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