This standard specifies the type and size of special calipers for detecting the minor diameter of wood screw threads. This standard applies to item 6 of table 1 of ZB J13 002.2. JB/T 7384.14-1994 Fasteners Wood Screw Thread Minor Diameter Caliper JB/T7384.14-1994 Standard download decompression password: www.bzxz.net
Some standard content:
Mechanical Industry Standard of the People's Republic of China JB/T7384.1~7384.18-94 Special Inspection Fixtures for Fasteners Published on 1994-07-26 Ministry of Machinery Industry of the People's Republic of China Implementation on 1995-07-01 Mechanical Industry Standard of the People's Republic of China Caliper for Minor Thread Diameter of Wood Screws Subject Content and Scope of Application This standard specifies the type and size of special calipers for detecting minor thread diameter of wood screws. This standard applies to item 6 of Table 1 of ZBJ13002.2. 2 Reference StandardswwW.bzxz.Net GB1214 Vernier Caliper ZBJ13002.2 Fastener Test Method Size and Geometric Accuracy of Wood Screws Type and Size The type and size of special calipers for minor thread diameters are as specified in Figure 1. (The angle of the outer jaw edge of the GB1214-75 vernier caliper is made as shown in Figure A-A). mgngiahgaabd 6=0.4 is applicable to 2.5 and below specifications; 6=0.6 is applicable to 3 and above specifications. JB/T7384.14-94 1—Inner measuring blade, 2—Ring frame, 3—Fixing nails: 4—Vernier: 5—Ring body; 6—Depth gauge; 7—External measuring machine Approved by the Ministry of Machinery Industry on July 26, 1994 Implementation on July 1, 1995 Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.