Is A Sheet Metal Screw The Same As A Self-tapping Screw?
A self-tapping screw can be defined as a tapping screw. It is referred to as a sheet metal screw as they are heavily used in the sheet metal trade. Whatever name it is the device is designated to contain a form of mating threads.
What Is The Difference Between Self-tapping And Self Drilling Screws?
Self-tapping screws are designed having a capability to tap threads into the material. These screws cannot be employed to go through metal without having a pre-punched hole. A self drilling screw has a drill bit-shaped point in front of the metal. These screws are designed to create their own pilot hole to affix the material. Both these screws are used interchangeable, and mixing them up can cause failures in the field.
How Do You Turn A Bolt Into Self-tapping?
Start by simply grinding the taper onto the tip of the bolt. The next step is to add vertical grooves into the threads. You can add 3 or 4 grooves, depending on the size of the bolt. These grooves help in adding a sharp edge to the threads of the bolt when screwing the bolt. The next step is to drill a hole in the equipment and affix it securely.
Are Stainless Steel Self-tapping Screws Rust Proof?
Stainless steel self-tapping screws are designed with a superior chemical composition. This allows them to exhibit excellent corrosion resistance properties, thereby preventing rusting. The screws are, however, prone to rust when exposed to moisture continuously. When these screws are exposed to high temperatures continuously, they are prone to rust.
Table of Content
Stainless Steel Self Tapping Screw Specification
Standards | GB5783, DIN, DIN931, EN, JIS, ANSI, ASTM, ISO4017, AS |
---|---|
Sizes | M2 to M100 |
Length | 6 milmeter To 500 milmeter |
Diameters | M3-M60 |
Head | Flat, Triangular Square, T-head Hex, Round, , Hex-flange,etc |
DIN Standards | DIN912 DIN603 DIN934 DIN933 DIN6923 DIN931 B.S. |
Neck types | Hex, , Oval Knurled Square, Triangular, etc |
Materials | 18-8 SS, ss 316/ SS304 A2/A4, SS303, A2-70; SS316, A4-80 A4-70; SS316L, SS201, SS304, SS904L, |
Description | Price in India | Price in USD | Price in Euro | Price in Saudi Riyal | Price in Ringgit |
4.5MM CORTICAL SCREW SELF TAP LARGE HEX 66MM | ₹ 647/ NOS | $ 8.12 | € 8.00 | SAR 30.51 | RM 36.52 |
3.5MM CORTICAL SCREW SELF TAP SMALL HEX 34MMIM | ₹ 619/ NOS | $ 7.77 | € 7.65 | SAR 29.20 | RM 34.95 |
SELF TAP SCREW 5X5X19 | ₹ 1,128/ KGS | $ 14.16 | € 13.95 | SAR 53.21 | RM 63.69 |
SCREW SELF TAPPING, 100 DEGREE, FH TORX DRIVE #6X1/2 LG TYPE B SCREW- SS304 | ₹ 1,368/ KGS | $ 17.17 | € 16.91 | SAR 64.52 | RM 77.23 |
SS SELF TAPPING SCREW, 4.0X2.2X25 TYP 1 | ₹ 151/ KGS | $ 1.90 | € 1.87 | SAR 7.14 | RM 8.55 |
4.2X10MM LONG SELF TAPPING SCREW | ₹ 4/ PCS | $ 0.050 | € 0.049 | SAR 0.19 | RM 0.22 |
metric
Nominal Size | Pitch | Major Diameter | Minor Diameter | ||
max | min | max | min | ||
2.2 | 0.8 | 2.24 | 2.1 | 1.63 | 1.52 |
2.9 | 1.1 | 2.9 | 2.76 | 2.18 | 2.08 |
3.5 | 1.3 | 3.53 | 3.35 | 2.64 | 2.51 |
3.9 | 1.4 | 3.91 | 3.73 | 2.92 | 2.77 |
4.2 | 1.4 | 4.22 | 4.04 | 3.1 | 2.95 |
4.8 | 1.6 | 4.8 | 4.62 | 3.58 | 3.43 |
5.5 | 1.8 | 5.46 | 5.28 | 4.17 | 3.99 |
6.3 | 1.8 | 6.25 | 6.03 | 4.88 | 4.7 |
imperial
Screw | Threads Per Inch | Major Diameter | Minor Diameter | ||
max | min | max | min | ||
No. 2 | 32 | 0.088 | 0.083 | 0.064 | 0.06 |
No. 4 | 24 | 0.114 | 0.109 | 0.086 | 0.082 |
No. 6 | 20 | 0.139 | 0.132 | 0.104 | 0.099 |
No. 7 | 19 | 0.154 | 0.147 | 0.115 | 0.109 |
No. 8 | 18 | 0.166 | 0.159 | 0.122 | 0.116 |
No. 10 | 16 | 0.189 | 0.182 | 0.141 | 0.135 |
No. 12 | 14 | 0.215 | 0.208 | 0.164 | 0.157 |
No. 14 | 14 | 0.246 | 0.237 | 0.192 | 0.185 |
304 Self Tapping Screw Manufacturing Process
Self Tapping Screw
Self Tapping Metal Screws
Stainless Steel Self Tapping Screw
Self Tapping Bolts
Self Tapping Concrete Screws
Self Tappers Screws
Ss Self Tapping Wood Screws
Self Thread Screw
Flat Head Self Tapping Screws Black
Stainless Steel Pan Head Self Tapping Screws
Self Tapping Sheet Metal Screws
Torx Self Tapping Trailer Deck Screws
Self Tapping Lag Screws
Type AB Self Tapping Screws Sizes
Screw Size | Screw Threads per Inch | Recommended Hole Diameter | Drill Bit Size |
---|---|---|---|
#2 | 32 | 0.0760" | #48 |
#3 | 28 | 0.0810" | #46 |
#4 | 24 | 0.0860" | #44 |
#5 | 20 | 0.1065" | #36 |
#6 | 20 | 0.1160" | #32 |
#7 | 19 | 0.1285" | #30 |
#8 | 18 | 0.1360" | #29 |
#10 | 16 | 0.1590" | #21 |
#12 | 24 | 0.1875" | 3/16" |
1/4" | 14 | 0.2188" | 7/32" |
5/16" | 12 | 0.2720" | I |
3/8" | 12 | 0.3281" | 21/64" |
How much weight can a self-tapping screw hold?
self-tapping screw can maintain around 80 to 100 pounds
Drive Screws Type U Round Head Dimension
Nominal Screw Size |
Number Of Thread Starts |
D | A | H | P | Recommened Hole Size |
|||||
---|---|---|---|---|---|---|---|---|---|---|---|
Outside Diameter |
Head Diameter |
Head Height |
Pilot Diameter |
Drill Size No. |
Hole Diameter |
||||||
Max. | Min. | Max. | Min. | Max. | Min. | Max. | Min. | ||||
00 0 2 4 |
6 6 8 7 |
0.060 0.075 0.100 0.116 |
0.057 0.072 0.097 0.112 |
0.099 0.127 0.162 0.211 |
0.090 0.118 0.146 0.193 |
0.034 0.049 0.069 0.086 |
0.026 0.041 0.059 0.075 |
0.049 0.063 0.083 0.096 |
0.046 0.060 0.080 0.092 |
55 51 44 37 |
0.052 0.067 0.086 0.104 |
6 7 8 10 |
7 8 8 8 |
0.140 0.154 0.167 0.182 |
0.136 0.150 0.162 0.177 |
0.260 0.285 0.309 0.359 |
0.240 0.264 0.287 0.334 |
0.103 0.111 0.120 0.137 |
0.091 0.099 0.107 0.123 |
0.116 0.126 0.136 0.150 |
0.112 0.122 0.132 0.146 |
31 29 27 20 |
0.120 0.136 0.144 0.161 |
12 14 |
8 9 |
0.212 0.242 |
0.206 0.236 |
0.408 0.457 |
0.382 0.429 |
0.153 0.170 |
0.139 0.155 |
0.177 0.202 |
0.173 0.198 |
11 2 |
0.191 0.221 |
Self Tapping Screw Application
Self Tapping Concrete Screws Length
L | Nominal Screw Length |
1/8 | 3/16 | 1/4 | 5/16 | 3/8 | 1/2 | 5/8 | 3/4 | 1 in. and over |
---|---|---|---|---|---|---|---|---|---|---|
S | Pilot Length | 0.047 | 0.047 | 0.047 | 0.047 | 0.062 | 0.062 | 0.078 | 0.078 | 0.125 |
Self Tapping Screw Vs Self Drilling Screw
Self-tapping screws tap their own threads, but cannot bore through metal and require a pilot hole. Self-drilling screws dispose of the require for a pilot hole, but can tap as well. These screws are not conversely, and mixing up the two can cause many headaches or possible failures within the field.
Still have a query in mind about quality? check our supplies in Singapore, Malaysia, Africa, Australia and USA
Anchor Offshore Oil Field Development, United States
Equus Offshore Gasfield Development, Australia
Jubilee Oil Field Development, Ghana
Hilton Steel © 2022 All Rights Reserved