JB/T 7384.18-1994 Fastener Washer Hole Gauge

This standard specifies the type and size of the go and stop gauges used to detect the bore diameter of washers. This standard applies to item 12 of table 1 of ZB J13 002.4. JB/T 7384.18-1994 Fastener Washer Bore Diameter Gauge JB/T7384.18-1994 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T7384.1~7384.18-94
Special Inspection Fixtures for Fasteners
Published on 1994-07-26www.bzxz.net
Ministry of Machinery Industry of the People's Republic of China
Implemented on 1995-07-01
Mechanical Industry Standard of the People's Republic of China
Fasteners
Gasher Bore Gauges
Subject Content and Scope of Application
This standard specifies the type and size of the go and no-go gauges used to detect the bore diameter of washers. This standard applies to item 12 of Table 1 of ZBJ13002.4. 2 Reference standards
GB1957
GB 3103.3
Smooth limit gauge
Purple fixture tolerance Flat washers
ZBJ13002.4 Purple fixture test method Washer size and geometric accuracy Type and size
JB/T7384.18-94
3.1, the gauge type is divided into type 1 and type 1, as shown in Figure 1. Type 1 is used for washers with specifications > 6mm, and type 1 is used for washers with specifications ≤ 6mm. The rest
Approved by the Ministry of Machinery Industry on July 26, 1994
Implemented on July 1, 1995
JB/T7384.18-94
The stop gauge size of Class A flat washers shall be as specified in Table 1. Table 1
Pad specification
Basic size
Limit deviation
Basic size
Limit deviation
H(reference)
H2(reference)
Clear specification
Original size
Limit deviation
Basic size
Limit deviation
3.3The go and stop gauge dimensions of Class C flat pads shall be as specified in Table 2. Overall specification
Basic size
Limit deviation
Basic size
Limit deviation
Ht(reference)
(Dream test)
The go and stop gauge dimensions of the spring potential ring shall be as specified in Table 3. 3
Basic size
Limit deviation
Basic size
Limit deviation
(reference)
(reference)
Basic size
Limit deviation
JB/T 7384. 18- 94
Basic size18.72|20.7223.0225.02|28.02Limit deviation
(reference)
(reference)
The go and stop gauge dimensions of elastic washers and locking screws shall be as specified in Table 4. Table 4
Basic size
Limit deviation
Basic size
Limit deviation
(reference)
13.4312.931
Basic size
Limit deviation
Basic size
Limit deviation
(reference)
Hz(reference)
JB/T7384.1894
Continued Table 4
17.4316.93
Note: 1) is the gauge size of 12, 14, 16mm locking washers. The rest of the elastic pads and locking washers are common. Additional notes:
This standard is proposed and managed by the National Technical Committee for Standardization of Fasteners. 22
This standard was drafted by the Machinery Standardization Research Institute of the Ministry of Machinery Industry, with participation from the Shanghai Fastener and Welding Materials Technology Research Institute and the Shenyang Standard Parts Research Institute.
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