M5 M4 M3 Plain Polished Cross Recessed Button Head Sems Metal Screw Din7985 Din125 Din127 A2 A4 70 80
Price:
$0.01~2.56,Piece/Pieces
MOQ:
10pcs
Delivery Time:
about 12-18days
Brand:
JIASHAN
Product Description
M5 M4 M3 Plain Polished Cross Recessed Button Head Sems Metal Screw Din7985 Din125 Din127 A2 A4 70 80
Product Description
These precision SEMS screws feature a cross recessed pan head with a polished, mirror‑like finish that enhances appearance. The washer combination includes a DIN125 flat washer and a DIN127 spring washer, both pre‑assembled and captive. Manufactured from A2 (304) or A4 (316) stainless steel with strength classes 70 or 80, they are ideal for compact electronic and instrument assemblies. The pan head provides a larger bearing surface, while the polished surface offers a bright, uncoated look. Conforming to DIN7985 (screw), DIN125 (flat washer) and DIN127 (spring washer), these screws ensure dimensional consistency and interchangeability.
Applications
| Industry | Usage |
|---|---|
| Automotive | High-strength applications in engines, heavy-duty machinery, and bridge construction |
| Mechanical | Connecting mechanical parts, circuit boards, engines, transmissions in various industries |
| Energy | Connecting power generation equipment and transmission lines |
| Architectural | Building structures, shipbuilding, and petrochemical equipment |
- Consumer electronics: laptop housings, smart speakers, gaming controllers.
- Precision instruments: optical devices, laboratory meters.
- Medical equipment housings (non‑implantable): monitoring devices, ultrasound probe holders.
- Communication modules: vibration‑resistant joints with spring washer.
- DIY kits and modelling: polished head adds aesthetic value.
Key Features
- Diameters: M3, M4, M5
- Head: Cross recessed pan head (DIN7985)
- Washers: DIN125 flat + DIN127 spring (captive)
- Materials: A2‑70, A2‑80, A4‑70, A4‑80
- Finish: Plain polished
- Thread: Full thread
Company Information
Frequently Asked Questions
Q: Are you trading company or manufacturer?
A: We are factory and OEM are available.
Q: How long is your delivery time?
A: Generally 7-10 days if in stock, or 15-20 days if not in stock (depending on quantity).
Q: Do you provide samples? Is it free or extra?
A: Yes, we offer free samples but customers pay the freight cost.
Q: What are your payment terms?
A: 30% T/T in advance, balance before shipment or L/C.
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Hunan Jia Shan Hardware Tech Co., Ltd.
Location
1st Floor,Building 8 Phase II Factory Building,No.8 Lutian Road,Lugu Base,Lugu Street,Xiangjiang New Area,Hunan Province.Postal Code:410205
Contact Person
Tan