M3 M4 M5 Wing Bolts A2 304 Stainless Steel Wingbolt Nuts Butterfly Bolt DIN316

• Customization: Available
• Material: Stainless Steel
• Type: Round Head
• Model NO.: DIN 316
• Connection: Common Bolt
• Head Style: Round
• Standard: DIN, ANSI, GB, JIS, BSW, GOST, ISO
• Grade: A2, A4
• Application: Machinery, Chemical Industry, Environmental, Building
• Finish: Polishing
• Quality: 100% Tested
• Price: Factory Price
• Delivery: 15-30 Days
• Surface: Plain, Zinc Plated (Blue, White, Black, Yellow)
• Package: Standard Package or Customer's Packing
• Box: Customer's Brand Box/Plain Box
• MOQ: Can Be Negotiated
• Shipment: by Sea / Truck / Plane / Express
• Exterior Finish: Passivation
• Sample: Available
• Customized: Available
• Service: One-Stop Service
• Online Sales: 24 Hours Online
• OEM/ODM: Available
• Head: Round
• Transport Package: Bulk Packaging, Small Box(Glue Box, Color Box)
• Specification: M5-M20
• Trademark: Mianxuan, Customized
• Origin: Ningbo Zhejiang
• HS Code: 73181510
• Production Capacity: 1000tons Per Month
• Package Size: 10.00cm * 5.00cm * 5.00cm
• Package Gross Weight: 0.500kg

Product Description

M3 M4 M5 Wing Bolts A2 304 Stainless Steel Wingbolt Nuts Butterfly Bolt DIN316

Stainless Steel Wing Bolt
Material:	Carbon Steel, Stainless Steel, Brass etc.
Standards:	GB, DIN, ISO, ANSI/ASTM, BS, BSW, JIS, ETC
Size:	M5-M20 or non-standard as request & design
Finish:	Plain, Black, Zinc, Yellow Zinc, HDG, Dacromet, etc.

 

: DIN933, DIN931, DIN912, DIN603, DIN7985, DIN7991, DIN6921, ASME/ANSI B 18.2.1, ASME/ANSI B18.2.3.1 M, GB, BSW, ISO Hex bolt, carriage bolt, heavy hex bolt, flange head bolt, anchor bolt, etc

: DIN934, DIN6923, DIN985, ISO4032 hex heavy hex nut, 2H nut, A563 / A563M cap nut, nylon nut, etc

: threaded rod DIN975,DIN976, threaded bar DIN975 stud bolt, B7 stud bolt ect

: hex screw, DIN912; self-drilling screw, DIN7504; self-tapping screw, DIN7981/7982; drywall screw, pan head screw, button head screw, machine screw, chipboard screw, furniture screw, wood screw, etc

: flat washer DIN125, spring washer DIN127, lock washer, square washer, spring lock washer, plain washer, etc

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FAQ

Q1: What thread standards do you follow?

A1: Our screws comply with DIN, ISO, ANSI, and JIS standards, and can also be customized according to customer drawings.

Q2: What stainless steel grades do you supply for bolts?

A2: We supply multiple grades including A2-70, A2-80, A4-70, A4-80, 304, 316, and 410SS, suitable for different mechanical strength and corrosion-resistance requirements.

Q3: Do you provide samples before mass production?

A3: Yes, we offer free or low-cost samples for quality and dimension confirmation prior to order.

Q4: How do you control product quality?

A4: Every batch is tested for torque, hardness, thread precision, and salt spray corrosion resistance, following ISO 9001 quality system standards.

Q5: Do you offer OEM or customized production?

A5: Yes. We can produce screws according to samples, technical drawings, or specific drive/head combinations, and offer custom packaging and labeling.

Q6: What is the difference between A2 and A4 stainless steel bolts?

A6: A2 (304) is ideal for standard outdoor and industrial use, while A4 (316) contains molybdenum, offering higher corrosion resistance for marine, chemical, and salt-spray environments.

Q7: Will stainless steel bolts rust over time?

A7: Under severe chemical or chloride exposure, A2 may develop slight surface corrosion. A4/316 performs better in harsh environments. We also offer passivation treatment for enhanced protection.