21.040.01 螺纹综合 标准查询与下载

JIS B 1004:1975 车螺纹前的孔径

の規格は，次に示すねじのねじ立て又はこれに準ずる加工を行う場合のねじ下穴径(以下，下穴径という。)について規定する。なお，ねじの呼びMI.7， M2.3及びM2.6の下穴は，附属書による。

Hole sizes before threading

BS 61:1969 轻型铜管与配件用螺纹规范

Threads for use with tubes and fittings to BS 66 & 99, BS 1306 and BS 2871:Part 2, for which threads to BS 21 are not suitable or cannot be utilized due to the thickness being insufficient.

Specification for threads for light gauge copper tubes and fittings

UNI 2377-1964 锥形端*螺钉座

Esempio e tabella con designazione. Estremita' conica e' la 9 UNI 947 (2 edizione).

Tapered screw seats.

BS 3580:1964 螺纹强度设计考虑指南

Gives guidance on the design of load-bearing connections and discusses the various factors which influence the strength of such connections with the aim of giving some indication of the effect of these factors. Only screw threads of triangular (V) form are considered and the data presented have been collected from tests conducted mainly on steel components.

Guide to design considerations on the strength of screw threads

BS 1104:1957 通用梯形螺纹规范

Defines Acme thread; tables of basic sizes, limits and tolerances for standard series of single start threads $9D in to 5 in diameter. Agrees with ASA B1.5:1952 except for pitches associated with diameters $9F in, $9G in, 1 in, 1$9D in and 1$9H in. 2G, 3G and 4G fits in the American standard included, together with finer class , 5G. Tables of effective diameter tolerances for extended range of diameter/pitch combinations are provided. From these and related tables limiting dimensions for any special diameter/pitch combination for single or multi-start Acme thread can be calculated.

Specification for general purpose Acme screw threads

BS 1657:1950 锯齿螺纹规范

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.

Specification for buttress threads

ASME B1.3-1941 螺纹测量系统的可接受性：英制和公制螺纹（UN、UNR、UNJ、M、MJ）

Screw Thread Gaging Systems for Acceptability:Inch and Metric Screw Threads (UN,UNR,UNJ,M,MJ)

AS B199:1962 螺纹根部和收尾规范

Provides data of dimensions and profiles of machined undercuts for external and internal threads of Unified, Whitworth, BA and Cycle thread forms. Dimensions and tolerances are given for standard cutting tools for this purpose and recommendations are mad

Undercuts and runouts for screw threads