SS304 Stainless Steel Self Tapping Drilling Screws For Mine Shed Roof
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Product Name:SS304 Stainless Steel Self Tapping Drilling Screws For Mine Shed Roof
Material: 410 Stainless Steel, 304 Stainless Steel, 410 Stainless Steel, 316 Stainless Steel, Alloy Steel
Screw Size: M3, M4, M5, M6, M8, M10, M12, M14... Certificate: ISO, GB , DIN
Application: Industrial machinery, Furniture, House ,precision instrument etc.
Products Description
The SS304 Stainless Steel Self tapping drilling screws is a new invention in recent years. Screws are a common term for fasteners, a daily spoken word.The tail of the self-drilling screw has a tail-drilling or pointed tail shape, and no auxiliary processing is required. It can be directly drilled, tapped and tightened on the set material and basic material, which greatly saves construction time. Compared with ordinary screws, its toughness and holding power are high, and it will not loosen after a long time after combination. It is easy to complete the operation by using safety punching and tapping at one time.
Uses: It is a kind of screw, mainly used for fixing the color steel tile of steel structure, and can also be used for fixing thin plate of simple construction. It cannot be used for metal-to-metal bonding and fixing.
Self-drilling screw, Material and model,There are two kinds of materials: iron and stainless steel. Stainless steel is divided into a variety of materials. Models are: Φ4.2/ Φ4.8/ Φ5.5/ Φ6.3mm, the specific length can be negotiated according to requirements.
According to the different drill tails, it can be divided into:
Round head rice / cross / plum blossom, countersunk head (flat head) / rice / cross / plum blossom, hexagon washer, round head washer (large flat head), horn head, etc.
1. Self-tapping screws: mechanical performance requirements
1. Heart hardness: standard value HRC28-38. The test is carried out on a section 1-2 times the nominal diameter from the tail. If the nominal length is too short, it can be embedded first, and then the hardness is measured.
2. Surface hardness: standard MIN HV450.
3. Carburized layer: standard 4#-6#:0.05-0.18mm, 8#-12#:0.10-0.23 mm, 14#:0.13-0.28 mm. The main purpose of carburization is to increase the surface hardness and ensure the strength of the teeth. If the decarburization is too deep and the carburization is insufficient, the strength of the teeth will not meet the requirements, that is, the teeth will be damaged during the screwing test.
SS304 Stainless Steel Self Tapping Drilling Screws For Mine Shed Roof Parameters and Drawing
| Size | Code | Flange Dia. | Head Wd. | Head Ht. | Lg. |
| M4.2 x 13 | BZX.S080502-M4.2-13 | 8.25 | 6.25 | 3.1 | 13 |
| M4.2 x 16 | BZX.S080502-M4.2-16 | 8.25 | 6.25 | 3.1 | 16 |
| M4.2 x 19 | BZX.S080502-M4.2-19 | 8.25 | 6.25 | 3.1 | 19 |
| M4.2 x 25 | BZX.S080502-M4.2-25 | 8.25 | 6.25 | 3.1 | 25 |
| M4.2 x 32 | BZX.S080502-M4.2-32 | 8.25 | 6.25 | 3.1 | 32 |
| M4.2 x 38 | BZX.S080502-M4.2-38 | 8.25 | 6.25 | 3.1 | 38 |
| M4.2 x 45 | BZX.S080502-M4.2-45 | 8.25 | 6.25 | 3.1 | 45 |
| M4.2 x 50 | BZX.S080502-M4.2-50 | 8.25 | 6.25 | 3.1 | 50 |
| M4.8 x 13 | BZX.S080502-M4.8-13 | 9.8 | 7.8 | 4 | 13 |
| M4.8 x 16 | BZX.S080502-M4.8-16 | 9.8 | 7.8 | 4 | 16 |
| M4.8 x 19 | BZX.S080502-M4.8-19 | 9.8 | 7.8 | 4 | 19 |
| M4.8 x 25 | BZX.S080502-M4.8-25 | 9.8 | 7.8 | 4 | 25 |
| M4.8 x 32 | BZX.S080502-M4.8-32 | 9.8 | 7.8 | 4 | 32 |
Why Choose US?
1. We have automatically generate machines produce the screws, Bolts, Nuts, Washers and so on .
2. Our high productivity can make sure your quickly delivery time.
3. We have professional quality Checking department, make sure good quality.
4. 24Hrs online service.
5. Active and perfect after-sales service system
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SS304 Self Tapping Drilling Screws 150mm Length Carburized Layer Images
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