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GB 839 - 1988

Knurled Thumb Screws with Waisted Shank

GB 839 - 1988 滚花头不脱出螺钉

See all versions and complete specifications: Knurled Thumb Screws with Waisted Shank — Full Specification Page

Dimensional Specifications — GB 839 - 1988 (mm)

Size	P	e	r	k_max	k_min	s_max	s_min	ds_max	ds_min	k_nominal	ds_nominal
M3	0.7	1.0	1.26	7.78	6.5	2.8	2.66	1.2	1.51	8	6.32
M4	1	1.4	1.66	10.73	10	4.5	4.32	1.6	1.91	11	9.64
M5	1.5	2.4	2.56	16.73	13.5	7	6.78	2.5	2.81	17	13.07

Related Standards

GB 834 - 1988— Knurled Thumb Screws GB 835 - 1988— Knurled Screws GB /T 2163 - 1991— The Parts and Units of Jigs and Fixtures Movable Handle Holddown Screw GB /T 836 - 1988— Knurled Screws with Small Head GB /T 840 - 1988— Plastic Diamond Knurlhead Screws DIN 464 - 2007— Knurled Thumb Screws, High Type DIN 653 - 2006— Knurled Thumb Screws, Low Type DIN 7964 (F) - 1990— Reduced Shanke Bolts and Screws with Coarse Thread - Knurled Thumb Screws, High Type

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