自攻钉又称快牙螺丝，是一种钢制的快装紧固件，多用于薄型金属板间连接。 DIN 7976 C为六角头自攻螺钉 ,对应国标GB/T 5285 (等效采用国际标准ISO 1479)。 自攻钉根据头部形状的不同，主要有盘头、沉头、半沉头、外六角等自攻螺钉；根据头部槽型的不同，主要有十字槽、一字槽以及内六角花型等自攻螺钉。 自攻钉的工艺流程一般为线材退火-线材盘圆-断料-冷镦-搓丝-热处理（渗碳）-表面处理。 具体情况以制造商为准。 表中数据摘自DIN7976-1990,仅供参考，具体以实 …

材质：不锈钢SUS410、SUS304、SUS316、1022碳钢等；公称直径：ST2.9-ST6.3；公称长度：9.5—300mm；表面处理：镀锌、镀镍、达克罗等可按客户需求；支持非标定制。

Metric DIN 7976 hexagon head self-tapping sheet metal screws are fully threaded with a coarse thread and a gimlet point (Type C). Recommended to be used in thin gauge sheet metal. resinous plywood. and composite materials. The hex head is an indented top surface with six flat sides in a hexagonal shape with a flat bearing surface below.

DIN 7976 – Hex Head Self-tapping Screws Type C , Hexagonal head self-tapping screws Dimension of DIN 7976 as below: d 2.9 3.5 3.9 4.2 4.8 5.5 6.3 s 5 5.5 7 7 8 8 10 e min. 5.45

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DIN 7976 - Hexagon head self tapping screws Current norm: DIN ISO 1479 Equivalent norms: ISO 1479; CSN 021231; PN 83101; UNI 6949;

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DIN7976C Hex head tapping screw Steel zinc plated Characteristics Series: DIN 7976C Head form: Hexagon head Screwing system: Hexagon Surface protection: Galvanic/electrolytic zinc plated With point: Yes Self drilling: No DIN standard: 7976 Type: Hexagon screw Material Thread diameter mm Length mm Article Carbon steel 4.2 13 23693275 Carbon ...

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Weight: 0.0000: Material: Stainless-Steel-A2: Standard Number: DIN7976C: Second Standard: ISO1479: Drive: Hexagon: Head: HEXAGON: American Generic Brand Term-Diameter