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SJ 2839 - 1987

Cross Recessed Round Head Tapping Screws with Lock Washers External Teeth Assembly

SJ 2839 - 1987 十字槽圆头自攻钉和外齿锁紧垫圈组合

See all versions and complete specifications: Cross Recessed Round Head Tapping Screws with Lock Washers External Teeth Assembly — Full Specification Page

Dimensional Specifications — SJ 2839 - 1987 (mm)

Size	P	e	r	k_max	k_min	s_max	s_min	ds_max	ds_min	k_nominal	ds_nominal
ST3	1.41	1.35	1.93	2.55	1.41	8.5	8	2	4	2.85	3.7
ST4.0	1.59	2.14	2.73	3.25	1.59	10.6	10	2	4.8	3.55	4.3

Related Standards

GB /T 9074.18 (S2) - 2017— Cross Recessed Pan Head Tapping Screws and Plain Washer Assemblies GB /T 9074.18 (S2) - 2002— Cross Recessed Pan Head Tapping Screws and Plain Washer Assemblies GB /T 9074.18 - 1988— Cross Recessed Pan Head Tapping Screws and Plain Washer Assemblies GB 9074.19 - 1988— Cross Recessed Pan Head Tapping Screw and Large Plain Washer Assemblies GB /T 9074.18 (S3) - 2017— Slotted Pan Head Tapping Screws and Plain Washer Assemblies GB /T 9074.18 (S3) - 2002— Slotted Pan Head Tapping Screws and Plain Washer Assemblies DIN 6901 - 1990— Tapping Screw and Washer Assemblies ISO 10510 (S2) - 2011

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