Standard No.:	GB/T 13916-2002
English Name:	Unnotel tolerance of shape and position for stampings
Chinese Name:	冲压件形状和位置未注公差
Professional Classification:	GB    National Standard
Issued by:	AQSIQ
Issued on:	2002-9-11
Implemented on:	2003-4-1
Status:	superseded
Superseded by:	GB/T 13916-2013 Unnotel tolerance of shape and position for stampings
Superseded on:	2014-3-1
Superseding:	GB/T 13916-1992 冲压件形状和位置未注公差
Language:	English
File Format:	PDF
Word Count:	2500 words
Price(USD):	90.0
Delivery:	via email in 1 business day

Unnoted tolerance of shape and position for stampings 1 Scope This standard specifies the grades and values of unnoted tolerances for straightness, flatness, coaxiality, symmetry, roundness, cylindricity, parallelism, perpendicularity and inclination of metal stampings. This standard is applicable to metal sheet stampings. 2 Grades of tolerances There are five grades of tolerances for straightness and flatness of stampings, and four for coaxiality and symmetry. 3 Values of tolerances 3.1 Unnoted tolerances for straightness and flatness The values of unnoted tolerances for straightness and flatness shall be as specified in Table 1, and values obtained from relatively long edges shall be chosen as the main parameters in terms of unnoted tolerances for flatness. Examples for selection of main parameters L, D and H are shown in Figure 1.

Foreword i 1 Scope 2 Grades of tolerances 3 Values of tolerances