Overview
Slotted round head bolts are a classic fastener design featuring a rounded head with a single straight slot, designed for use with a flat-blade screwdriver. They are widely used in industries where a low-profile, aesthetically pleasing fastener is required, such as electronics, automotive, and furniture manufacturing. These bolts are available in various materials, including carbon steel for general-purpose applications, stainless steel for corrosion resistance, and brass for decorative or conductive purposes. The slotted head allows for easy manual installation, though it requires careful alignment to prevent cam-out (slippage) during tightening.
Structure and Working Principle
The slotted round head bolt consists of three main parts: the round head with a machined slot, the shank (which may be partially or fully threaded), and the threaded end. The slot engages with a flat-head screwdriver, transferring torque to tighten or loosen the bolt. Unlike Phillips or hex-head fasteners, the single-slot design is simpler to manufacture but offers less driving torque capacity. The rounded head distributes clamping force evenly and sits flush against surfaces, making it ideal for applications where protruding fasteners are undesirable.
Key Features
The primary advantage of slotted round head bolts is their clean, low-profile appearance when installed. The smooth, rounded head lacks sharp edges, reducing the risk of snagging or injury in exposed applications. Material options allow for customization based on environmental conditions. Stainless steel variants (e.g., 304 or 316 grade) provide excellent corrosion resistance for outdoor or marine applications, while carbon steel bolts are more economical for indoor use. Brass versions are sometimes used in electrical applications or where non-magnetic properties are required.
Application Areas
These bolts are commonly found in electronics assembly, particularly in older equipment where slotted screws were standard. They're also used in automotive interiors, furniture construction, and machinery where a flush fastener is needed. In B2B contexts, large quantities are often purchased for manufacturing lines. Specific applications include securing control panels, attaching hinges, and assembling wooden furniture where the bolt head needs to countersink neatly into the material.
Maintenance and Precautions
To maintain slotted round head bolts, periodically check for corrosion (especially in carbon steel versions) and ensure the slot remains undamaged. Applying thread-locking compounds can prevent loosening in vibration-prone applications. When working with these fasteners, always use a properly sized flat-head screwdriver that fits the slot snugly. Using an undersized driver can damage the slot, making future removal difficult. For high-torque applications, consider alternative drive types (e.g., Phillips or hex) as slotted heads are more prone to cam-out.
B2B Procurement Guide
When purchasing slotted round head bolts in bulk, specify material grade, thread size (e.g., M3, M4), thread pitch, and overall length. For corrosion-resistant applications, 18-8 stainless steel is a common choice. Lead times vary by material and quantity; standard carbon steel bolts are typically available ex-stock, while specialty materials may require 2-4 weeks for production. Quality indicators include consistent slot machining, proper thread formation, and material certifications (e.g., ISO 898-1 for mechanical properties). For reference, wholesale prices range from approximately $0.05 per unit for basic carbon steel M3 bolts to $0.50 for larger stainless steel versions.
Related Manufacturers
- 主营：联轴器
- 主营：304不锈钢螺丝、2205不锈钢螺丝、310S不锈钢螺丝、304不锈钢螺栓、2205不锈钢螺栓、310S不锈钢螺栓、316不锈钢螺栓、热镀锌螺栓、316不锈钢螺丝、304不锈钢螺母、热镀锌螺丝、达克罗螺丝
- 主营：不锈钢高强度紧固件、高温合金紧固件、低温合金紧固件、4462螺栓、哈氏合金紧固件、钛合金紧固件、双相不锈钢紧固件
- 主营：螺母、螺钉、垫圈、螺栓、铆钉、组合螺丝、自攻螺丝、钻尾螺丝、紧定螺丝、销轴、膨胀螺丝、螺柱、牙条、挡圈、机械零件、索具、螺丝钉、弹簧、车床加工
- 主营：圆柱头、内六角螺丝、三组合螺丝、一字圆头、外六角螺丝、不锈钢螺丝、钻尾钉
- 主营：铝合金铆钉、六角螺母、方螺母、六角螺栓、四方螺栓、圆头螺钉、活节螺栓、圆柱头螺丝、内六角螺丝、十字自攻、沉头螺丝、平垫、弹垫、梅花螺钉、非标螺丝、紧定、自攻螺丝、T型螺丝、圆柱销、铆螺母、钻尾螺丝、挡圈、牙条、牙棒
- 主营：a286螺丝、310s螺丝、c276螺丝、inconel718螺栓、进口螺丝、耐高温螺丝、外六角螺丝、内六角螺丝、astma193b8螺柱、inconel718螺丝、耐热不锈钢螺丝
- 主营：紧固件、外六角、钢支撑、u型螺栓、螺栓六角、螺栓台阶、法兰螺栓、高铁螺栓、带介螺栓、镀锌螺栓、地脚螺栓、螺栓悬挑、悬挑梁、工字钢、预埋件、u型螺丝、悬挑配件、骑马螺丝、螺丝管卡、光伏支架、花篮拉杆、预埋螺丝、合金共渗、共渗高铁、带齿螺丝
- 主营：非标异形螺母、定制碳钢非标紧固件、定制不锈钢紧固件、非标异形螺栓、螺栓桥梁、六角铣槽、骑马螺栓、铣扁螺栓、轨道螺栓、活结螺栓、三角螺栓、定制铝制紧固件、定制铜制紧固件、非标螺丝、螺丝定制、双头螺柱、黄铜螺丝、手柄螺丝、套筒工具、非标销轴、异形螺母、偏心连接、定做支架t、光伏支架t
- 主营：鹅蛋螺栓、异型螺丝、外六角螺母、钻尾自攻丝
- 主营：三组合螺钉、不锈钢螺丝、304 螺丝、六角螺栓、六角螺母、平垫、弹垫、十字沉头、内六角螺丝
- 主营：非标铜、非标铝、m2摄像头、加长螺栓、非标定制、铁制螺丝、五金配件、cnc数控车、空心螺丝、机械五金、数控车床、非标零件、非标铁件、通空心铜、铜柱螺母、铜密封垫、定做铜套、cnc数控铜、数控五金、不锈钢车、非标圆铁棒、六角铜螺母、不锈钢螺母、外六角螺帽、注塑铜螺母
- 主营：钛合金螺丝、钛螺丝、钛螺母、Tc4钛螺丝、自行车钛螺丝、摩托车钛螺丝、钛合金图纸加工、钛定制加工零件、钛紧固件、钛零件
- 主营：自攻螺丝、钻尾自攻螺丝、十字自攻螺丝、内六角螺栓、外六角螺栓、沉头内六角螺栓、圆头内六角螺栓、高强度螺栓、法兰螺栓、碳钢螺丝、304不锈钢、黄铜螺丝、尼龙隔离柱、六角螺柱、法兰螺母、膨胀锚栓、T型螺母
- 主营：组合螺丝、三角牙螺丝、铆钉、螺栓304、六角螺栓、螺栓定制、双头螺栓、开槽螺钉、马车螺栓、槽防脱螺钉、车件、内六角、六角螺母、自攻螺钉、蝶形垫圈、法兰螺母、手拧螺丝、宏炎盖母、六角双通、弹性挡圈、螺钉定做、十字法兰、304不锈钢、紧定、垫圈定做