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  4. Standard "BS 1657:1950"
Standard BS 1657:1950 17.8.1950 preview

BS 1657:1950

Specification for buttress threads.



STANDARD published on 17.8.1950


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Price282.10 USD excl. VAT
282.10 USD

The information about the standard:

Designation standards: BS 1657:1950
Publication date standards: 17.8.1950
SKU: NS-60009
The number of pages: 26
Approximate weight : 78 g (0.17 lbs)
Country: British technical standard
Category: Technical standards BS

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The category - similar standards:

Screw threads in general

Annotation of standard text BS 1657:1950 :

Included angle between pressure and trailing flanks of 52°; standard form of thread has a pressure flank angle of 7°; special form has pressure flank normal to axis of screw. No rigid pitch/diameter relationship. Includes preferred series for diameters and pitches. Tables of tolerances and allowance for three classes of fit. System of gauging with notes on appropriate types and sizes of gauge. Method of measurement of effective diameter of buttress threads, tables of dimensions for the sizes of thread measuring cylinders. Status: Confirmed

Latest update: 2025-05-12 (Number of items: 2 199 201)
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