A4-80不锈钢内六角螺丝工厂
XZ Fastener manufactures A4-80 stainless steel socket screws for buyers who need higher-strength stainless fasteners with clean internal hex drive control. These screws are commonly specified as DIN 912 / ISO 4762 socket head cap screws, Allen head screws, or drawing-based socket fasteners according to order requirement. A4-80 is often selected for marine equipment, chemical machinery, outdoor assemblies, and stainless structures where A4 corrosion resistance and higher strength are both important. Buyers can source 不锈钢内六角螺钉 with finish, packing, and inspection details confirmed before production.
标准型
DIN 912 / ISO 4762; custom drawings available
实力
A4-80； A4-70 和 A2-70 可根据要求提供
材质
A4 / 316-系列奥氏体不锈钢
完成
普通、钝化、酸洗钝化、润滑
应用
船舶机械、化工设备、精密组件
买家在采购 A4-80 不锈钢内六角螺钉之前应了解什么
A4-80 socket screws combine stainless corrosion resistance with a higher property class than A4-70. Before sourcing, buyers should confirm whether the order requires DIN 912 / ISO 4762 socket head cap screws, low head socket screws, button head socket screws, countersunk socket screws, or a drawing-based design.
Confirm head style and drive
Socket screws are not the same as external hex bolts. Internal hex drive depth, socket size, head diameter, head height, and thread length should match the assembly tool and clearance space. Related 公制内六角螺栓 can be reviewed when the buyer needs standard DIN 912 items.
Check A4-80 availability by size
A4-80 can be more demanding than A4-70, especially in larger diameters or special lengths. Size, thread pitch, mechanical requirement, and inspection documents should be confirmed before the factory commits production.
Plan against thread galling
High-strength stainless socket screws can gall during fast assembly or dry tightening. Lubrication, anti-seize compound, mating nut material, and tightening method should be reviewed for repeated assembly or high clamp load applications.
常见采购说明
Clear purchasing descriptions help avoid wrong head type, wrong property class, or mixed stainless grades. Common buyer wording includes:
- A4-80 stainless steel socket screws DIN 912, M8 x 30, full thread, passivated finish.
- ISO 4762 A4-80 不锈钢内六角螺钉，公制粗牙螺纹，光面。
- 316 不锈钢内六角螺钉，A4-80，可根据要求提供材料测试证书。
- A4-80 内六角螺钉，配有配套的不锈钢平垫圈和弹簧锁紧垫圈。
- Special socket screws according to drawing, A4 stainless steel, higher-strength property class, controlled head dimensions.
- Separate carbon steel items such as Grade 8.8 carbon steel hex bolts, DIN 933 full thread hex bolts, zinc plated DIN 933 bolts, black oxide DIN 933 bolts, and hot dip galvanized DIN 933 bolts when the order includes both socket screws and external hex fasteners.
If the inquiry includes socket screws and metric hex head bolts together, list each product family separately with its own standard, material, grade, finish, and packing requirement.
详细规格表
| 项目 | 规格 | 买家须知 |
|---|---|---|
| 产品名称 | A4-80 不锈钢内六角螺钉 | Also described as A4-80 socket head cap screws or Allen head screws. |
| 通用标准 | DIN 912、ISO 4762、基于图纸的内六角螺钉 | State the exact standard because head dimensions may differ. |
| 直径范围 | 常见公制尺寸如M3-M24；其他尺寸按订单审核 | A4-80 availability should be checked by diameter and length. |
| 长度 | 标准长度或根据图纸定制长度 | 指定全螺纹、部分螺纹或精确螺纹长度。 |
| 线程 | 公制粗牙螺纹；可根据要求提供细间距 | Fine pitch must be clearly marked on drawings and packing lists. |
| 材质 | A4 / 316-系列奥氏体不锈钢 | 最终化学成分遵循所选标准和采购订单。 |
| 属性等级 | ISO 3506参考下的A4-80 | A4-70 may be more economical where A4-80 is not required. |
| 完成 | 普通、钝化、酸洗钝化、润滑 | 表面处理应与腐蚀暴露和组装方法相匹配。 |
| 检查 | Dimensions, socket gauge, thread gauge, visual appearance, material documents, mechanical reports upon request | Socket depth and drive quality are important control points. |
| 包装 | Bulk cartons, small boxes, bags, pallet packing, labels, barcodes, private packing | Can be supplied according to order requirement. |
材质及牌号说明
A4 stainless steel is a molybdenum-bearing austenitic stainless group often selected for chloride exposure, marine air, chemical environments, and outdoor equipment. A4-80 identifies a higher-strength stainless property class than A4-70, commonly associated with a minimum tensile strength level of 800 MPa under ISO 3506 reference conditions.
For buyers choosing between A2, A4-70, and A4-80, the decision should consider corrosion exposure, required clamp load, thread galling risk, mating parts, and assembly method. XZ Fastener provides additional background in its guide to 不锈钢螺栓等级 A2-70、A4-70 和 A4-80.
A4-80 stainless socket screws should not be treated as a universal replacement for alloy steel socket head cap screws. Alloy steel may offer higher strength, while A4-80 provides stainless corrosion resistance for suitable environments.
Inspection can include head dimensions, socket drive quality, thread fit, surface condition, material documents, and packing checks.
表面处理选择指南
A4-80 stainless steel socket screws are commonly supplied in plain stainless or passivated finish. Passivation helps remove free iron contamination and supports the natural stainless protective layer. For demanding appearance or corrosion environments, pickling and passivation may be discussed. Lubrication can be important for socket screws because stainless threads may gall under high tightening pressure.
| 完成 | 典型用途 | 买家须知 |
|---|---|---|
| 普通不锈钢 | General machinery, indoor assemblies, standard stainless socket screw stock | 未指定额外表面处理时的常见表面处理。 |
| 钝化 | 船用空气、户外设备、化工机械、洁净不锈钢组件 | Often requested where corrosion resistance and clean surface are important. |
| 酸洗和钝化 | More demanding surface cleaning requirements | Confirm appearance expectation and acceptance criteria in advance. |
| 润滑 | 更高的夹紧负载、重复装配、磨损敏感应用 | 使用润滑时扭矩行为会发生变化。 |
| 碳钢涂料 | 镀锌DIN 933 螺栓，黑色氧化DIN 933 螺栓，热镀锌DIN 933 螺栓 | 这些描述通常适用于碳钢六角螺栓，而不是标准 A4 不锈钢内六角螺钉。 |
For broader coating and finish comparisons, review the XZ Fastener 紧固件精加工指南.
制造和质量控制
Factory production begins with review of the standard, diameter, length, thread pitch, material grade, property class, finish, drive dimensions, packing method, and inspection requirement. Depending on size and order details, A4-80 stainless socket screws can be produced by cold heading, thread rolling, machining, or combined processes.
生产前
XZ Fastener checks the purchase description, drawing, material requirement, head type, socket drive, thread length, finish, and inspection documents. Buyers can browse broader 紧固件产品 when the order also includes nuts, washers, threaded rods, anchors, or hex bolts.
生产过程中
Common control points include head diameter, head height, socket depth, socket gauge fit, thread gauge fit, surface appearance, burr control, and material separation between A2 and A4 stainless grades.
Custom socket screws
For modified heads, special lengths, non-standard thread, shoulder designs, or special packing, XZ Fastener can review 定制紧固件 from drawings, samples, or application photos.
应用领域
A4-80 stainless steel socket screws are used where corrosion resistance, compact head design, internal drive assembly, and higher stainless strength are required.
- 船舶设备和沿海机械
- 化学加工设备
- Stainless steel machine frames
- 泵、阀门和仪表组件
- 食品饮料设备支架
- 户外自动化和电气外壳
- 精密机械组件
- 腐蚀环境下的维护更换零件
For high-vibration or safety-critical joints, the mating thread, tightening method, lubrication, and proof documentation should be reviewed before bulk production.
如何获得更快的报价
A clear inquiry helps XZ Fastener quote A4-80 stainless steel socket screws accurately. Please provide:
- 尺寸列表，例如M5 x 16、M6 x 20、M8 x 30、M10 x 40。
- 标准或图纸，如DIN 912、ISO 4762、低头、圆头、沉头或定制设计。
- 材质和牌号，例如 A4-80、A4-70、A2-70 或 316 不锈钢。
- 螺纹要求，包括粗牙螺纹、细牙螺纹、全螺纹或精确螺纹长度。
- 表面处理要求，例如普通、钝化、酸洗钝化或润滑。
- 每种尺寸的数量和预计的交货时间表。
- 包装要求，包括散装纸箱、小盒子、袋子、托盘、标签、条形码或私人包装。
- 检验要求，例如材料证书、尺寸报告、套筒规检查或第三方检验。
对于结构化查询，请使用 请求报价 页或 联系方式 XZ Fastener 包含绘图、照片或电子表格。
常问问题
What is an A4-80 stainless steel socket screw?
It is a stainless steel socket screw made from the A4 stainless group with an 80 property class under ISO 3506 reference. Buyers usually specify it when they need A4 corrosion resistance and higher stainless strength than A4-70.
Is DIN 912 the same as ISO 4762?
DIN 912 and ISO 4762 both refer to socket head cap screw standards, but buyers should state the exact standard required because dimensional details and acceptance expectations may differ.
A4-80内六角螺钉可以代替合金钢内六角螺钉吗？
Not automatically. Alloy steel socket screws may provide higher strength, while A4-80 stainless socket screws provide corrosion resistance. The load, environment, and assembly method should be checked before substitution.
Can XZ Fastener supply matching washers or nuts?
是的。可根据螺丝标准、螺纹、材料和订单要求提供不锈钢平垫圈、弹簧垫圈、六角螺母和组合填料。
How can buyers reduce galling risk with A4-80 stainless socket screws?
Buyers can consider lubrication, anti-seize compound, controlled tightening speed, clean mating threads, and correct mating material. The assembly method should be reviewed when high clamp load is required.
What documents can be requested with the shipment?
材料测试证书、尺寸检验报告、承插规检查、螺纹检验记录、装箱单等文件可根据订单要求讨论。
Can custom A4-80 socket screws be produced from drawings?
定制头部高度、肩部尺寸、特殊螺距、特殊长度、标记和包装可以从图纸、样品、照片、数量和应用详细信息中查看。
发送您的 A4-80 不锈钢内六角螺钉询盘
Send your size list, finish, quantity, packaging method, and inspection requirements. Include the standard or drawing number, head type, thread pitch, thread length, destination, and whether washers or nuts are needed. XZ Fastener will review the details and prepare a quotation according to your order requirement.
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