JB/T 9151.1-1999 JB/T 9151.1-1999 Fastener test methods Dimensions and geometric accuracy of bolts, screws, studs and nuts JB/T9151.1-1999 Standard download decompression password: www.bzxz.net

ICS21.050.0
Machinery Industry Standard of the People's Republic of China
JB/T 9151.1-9151.7—1999
Method of verification for fastenesSize andgeometry
1999-06-28 Issued
State Machinery Industry Bureau
2000-01-01 Implementation
1 Scope
Machinery Industry Standard of the People's Republic of China
Method of verification for fastenesSize andgeometryBolts, screws+studs and nuts
Method nf verification for fasteltssize and gcametryBolts, screws+studs and aulsJB/T9151.1-1999
代32190
This standard specifies the test methods for the dimensions and geometrical properties of bolts, screws, studs and nuts, and shall be used in conjunction with the corresponding product standards and basic standards.
This standard provides two or more test methods for items, and does not specify the arbitration method. If necessary, the supply and demand parties shall negotiate. This standard applies to the fasteners specified in national standards and industry standards, and non-standard fasteners may also be used accordingly. The size codes used in this standard, except where otherwise specified, are consistent with the product codes and basic standards. 2 Reference standards
The provisions contained in the following standards constitute the provisions of this standard through their use in this standard. The versions shown are valid when this standard is published. All standards are subject to revision. Parties using this standard should explore the possibility of using the listed version. GHT 944.11985
GAT1214.2—1996
GET1214.3—1996
G3T1214.41996
GB/T1216-1985
GBT1219—1985
GB/T 1957—1981
GT3934—1983
08rT5267-1985
GB/I5279-1985
GB/16177--1986
GB/16188-1986
GB/T 6315-1996
JB/T79A01999
JB/T 8788—1998
Cross calipers for butterfly lamps
Vernier calipersVernier calipers
Vernier calipersHigh-end vernier calipers
Vernier calipersDepth vernier calipers
Outside micrometers
Dial indicators
Smooth limit gauges
Ordinary bad-grain gauges
I want to export the original parts
Countersunk screw head shape and appearance
Hexagonal flange nut A Hexagonal flower-shaped fasteners
Vernier ruler
Radius template
3. Test items, methods and tools for effective testing
The test items and tools for effective testing shall be as specified in Table 1. Guohao Machinery Industry Bureau 1999-06-28 batch agent 2000-01-01 implementation
JB/T915L1—1999
Test items and medical test methods
Inner end effect center and large diameter
Hand-hold the end effect change gauge. 1. Sexual internal thread, and should be taken care of by the effective torque part (excluding the hook case dry mother outside] the single diameter of the internal thread
Hand-hold the stop grinding thread plug gauge 1. The threaded part of the two stages of the internal thread, each end shall not exceed two widths [starting from the selected gauge 】; For the internal thread effect of one or less than one marriage distance, the small should be completely screwed through the internal thread of the small light
by hand to make the inferior sleeve later than the internal thread of the part, and it should be able to pass smoothly (excluding the effective force distance of the tightening gauge nut): by hand to make the stop screen variable sense gauge base into the two lags of the lower internal thread (as shown in Figure 1, 2). It should meet the following specifications:
(1) The sum of the lubrication volume of type 1 and type 2 nut
,5E5ma
(2) The sum of the required volume (0.5D5m%0.8D) is z,+z, 56 0.65m
Effective small diameter service points:,:
Incomplete with screw points
(3) The entry of the push end face,
(4) The sum of the entry of the nut at both ends:
7,+2,3P
Incomplete fuel efficiency station
Specified
Through end release
GB/T 3934 specified
Moisture ripple millimeter gauge
8 3934 Attached is the standard for the stop belt relative slip [F according to the provisions of UH5267: The previous difference is H or G, and only 6H or TH can be used to select the standard: 2) If the maximum specification of the pattern is judged to be in line with the provisions of GB/T3934, it will be judged as JB/F. 9151.1-1999
Table (end)
Test items and test methods
Mean diameter and minor diameter of external thread
Used to apply the through-end thread ring gauge to the outside of the workpiece, and pass through the single diameter of the external thread
Used to apply the stop-end thread ring gauge to the outside of the workpiece, but not more than twenty screws (calculated from the screw ring gauge)
The size of the external effect
Method:
Use the through-end smooth lower gauge to measure the external effect of the workpiece, and the seat can pass smoothly: the stop-end gauge appears 7 pieces of external effect, if it fails Method 2:
Use an outside micrometer to measure at any ten points on the straight line to the left of the test part
4 Test items, methods and inspection tools for other sizes Test items, methods and inspection tools for other sizes 2 stipulates. 2
Test items and test methods
Effective length or
(1b size:
Use a 0.mm ruler to measure the distance from the long side of the end of the burner (as shown in National 3) to the end face of the through screw gauge (as shown in Figure 4) (2) Size:
Use a 0.05mm caliper to measure the distance from the long side of the end of the burner to the end of the explosion film (as shown in Yang 5) at the end of the double-headed column (ruler
Use a 0.05mm caliper to measure the distance from the straight surface (or the exchange point between the support surface and the spiral fiber) to the through end explosion ring gauge screen surface (as shown in Figure 4) GR.T39.4 assumes
through screw gauge
GH/T 3934 Period is
stop thread ring
direction 1:
GBT3934 specification
pass, stop light resistance card gauge
method 2:
GB/T1216 specification
about the scale
() GB/5267
provisions: Yao Qian screw mosquito male Www.bzxZ.net
difference band potential energy is g or /
into e; mirror start only 6h
or frequency burst pattern through gauge
(2) If other The thread is judged to be qualified if the state thread gauge sample meets the GB/T3934 standard. (3) The full test part of the fire diameter is at 1/2 of the effective length of the screw; the length gauge is at both ends of the thread. They should not be at the end of the screw and the incomplete screw part. The caliper specified in GB/T1214.2 is specified in GB/ 3 The length of the drum ring gauge specified in 4 shall not be included in the inner diameter of the thread ring gauge (the nominal length of the ring with the inner angle removed may be used or, () Inches: E/T9151.11999 Table 2 (continued) Test item Test method Thread ring gauge Use a (.051mm) upper ruler to measure from the long side of the end of the explosion rod (as shown in Figure 3) (2) 1 Size: Use 0.Measure the true width of the opposite side from the support surface to the end of the rod diameter with a 5mm caliper. Method: Use a 0.02mm caliper in the range of 1000 mm or more. Method 2: Use a special through-caliper or stop gauge in the range of 1000 mm or more. Diagonal measurement: Method 1: Use a 0.02mm upper ruler in the range of 1000 mm or more. Measuring tool: Use the caliper specified in GB/1214.2. Method 1: Use the caliper specified in GBT1214.2. Caliper specification (GB/1957). Caliper specification (GB/1957). Method 11: Use the caliper specified in GiR/T1214.2. 9151.1—1999
Table 2 ()
Test items Wave test method
Use special stop end on double: full net etc. board pull height standard test method 3;
Use special stop period inspection mold to measure (as shown in Figure 6! Two 6
Head height
Force method!:
Send 2:
Card limit should be in accordance with G8/T1957
Termination
Method 3:
Inspection of these types of products in accordance with the provisions of CB Hall 1957
|tt|| Method:
【1】G Date 1214.2 Issue with
【】To various head types with flat bearing surfaces, six free heads, square calipers
Head modification head:
Use a caliper with a ratio of 0.02 to measure
【2】Anti-buy modified half-head:
Use the inspection and measurement of the surface (as shown in the egg figure) (3 The bearing surface is flat, and the various types of straight and curved surfaces are such as shooting heads. Half-four heads:
Use an inspection mold (please use a larger specification to avoid d, etc.) and official points Measure with a measuring head (sheet measuring head) (as shown in Figure 8) Check the mold (2) and (3) GB/T1219 specified dial indicator: Check that the basic size of the diameter of the hole is equal to the basic size of the diameter, the hole drawing surface is good: the joint of the opening is not in the same position. Method 2: JBT9151.1-1999 table? (Continued) Test item test method Benchmark positive Dictionary
(1) Various head types with a flat supporting surface, such as hexagonal head, sheet head, round head, head, sheep-biting head:
Use a special pass, a regular caliper or a subdivider to measure (2) Countersunk head and semi-countersunk head:
Use a special gauge to measure (as shown in Figure 9) Check the damage
Constant mother height m
Method 1:
Use a 0.02mm caliper to check
Method 2:
Use a special wine and a stop gauge to verify the durability
Wheel height,,,
Save method! ：
()t or
First use a 0.02mm caliper to find the starting point A where the minimum diagonal width (e) specified in the new product standard is located; then use a 0.02mm caliper to find the distance from the support surface to this point, which is the variable" [as shown in Figure [0, Figure 11] Inspection method 2: ... .T3279 regulations: GBT1214.2 card regulations Method 2: The card gauge should comply with the provisions of GB8T1957. The card gauge of GBT1214.2 is JBT915L1-1999. Table 2 (thread) Test method 21 variable m First use 0.02mm card to find out the card gauge that meets the product standard. Measure the starting and ending points A and B of the small diagonal width (), and then use a 0.02mm caliper to measure the distance between the two points, which is the value as shown in the figure. Method 2: First use a special ring to determine the starting point A where the minimum diagonal width (.!) that meets the requirements of the product standard is located; then use a 0.02mm caliper to measure the distance from the support diagram to the flow point, which is the value as shown in Figure 12. (2r joint m
First use two special rings to determine the minimum diagonal width () that meets the requirements of the product standard. The points A and B are located; then use a 0. 0.2mm caliper measures the distance between points A and R, which is the distance between points A and R (as shown by the mouse): GB/T12t4.3 caliper: The aperture of the special ring gauge is: The opening should not be rounded or rounded in Method 3: JBT915t.11999 (see Figure 14). The measurement and verification items and tests are for the special ring gauge. It is only used for measuring the surface of the whole part before the special ring gauge is formed. The pre-fixed support surface shall not exceed the gauge plane. 【As shown】
Method 4:
Your quality assurance and hexagon matching method: According to the provisions of product standard Appendix A, such as GR/T6177 large angle flange A), first divide gauge A into hexagonal parts and apply it to flange surface 1, and then use the new gauge on the hexagon and surface 2 to check according to the unique (such as 15)
Part 3:
The hole weight of the special knife ring gauge is
The hole is not created
National; its thickness T is: 0.3%.
minus 0.3ml. The thickness limit deviation is
Method 4:
Gauge A When the minimum inner diameter is equal to
1.155tm, its limit deviation is
: The maximum diameter of the matching lever A is equal to the minimum lever height, and its limit
purchase flow path 4
standard method 1:
J/T9151.t—1999
Table 2 (scale)
company and tide
Western standard B
gauge people
Use D.02mm caliper to measure the maximum
method? :
Use special through, stop gauge and ring gauge to measure the product rod diameter 4
method! ：
Use a special stopper to measure the radius under the head, and produce a special radius measurement company
Method 2
Use a special closed-loop gauge to measure the height of the part or the thickness of the flange [or convex] first place the pad on the table! On the inspection face mold (as shown in the inspection letter 8, only the minimum diagonal width of the inner diameter is reduced by .01mm, and the limit deviation is G01214.2. The caliper gauge is in line with the provisions of GDT195: The semi-countersunk head ring gauge should comply with the provisions of GB/T5279!: GB12142 room-size gauge method 2: The above gauge should comply with the provisions of GB Hall 195T!: tt||Car semi-light sample
Method 2:
Projection control
Send!
RT1214.2 specified caliper
Card job should be lined with GBT957
Present! :
J8TBB specified millimeter:
Dense specified grid waist: wine, heart
To the spiral brown, spiral
Needle is the surface of the surface
times the diameter (
: The end pull is
Nine frequency pattern rise length
12 places
J8/E9151.1-1999
Table 2 (thread)
Test items and test methods
Use the limit or special, stop gauge to measure: 2:
First, put the surface of the mother on the flat (surface), and use the percentage to measure (as shown in Figure 16)
Method 3r
Use the depth caliper to measure
The width of the hexagon opposite side.
2m The caliper is used to control the measurement in the two opposite sides at approximately 12
Force method 2 ：
Use special through and stop gauges for measurement
Method 3:
Use special adjustment, correction or measurement. Among them, the through gauge is a hexagonal gauge, and the stop is a rectangular gauge [as shown in the figure)
Note: When using this method, you may need to measure the width of the inner corner of the seat (!
Method 1:
Use a 0.2mm caliper to measure upward at approximately 2 points on the object
The damage should be in accordance with E1957 Method 2: The dial indicator specified in GB/T121. Method 3: The caliper specified in GB/T1214.4. Method 1: The caliper specified in GB/T1214.2. The plug gauge should comply with the provisions of G/T91. Method 3: The close gauge should comply with the provisions of GB/T1957: The height of the opposite side of the through-end hexagonal plug () should be equal to the minimum opposite side of the inner hexagon (), and its opposite angle (). The diameter is equal to the small opposite angle of the inner hexagon (). How to use the plug gauge at the end The
long side gram should be equal to the
width of the hexagonal plug gauge at both ends (3
: The length of the hexagonal part of the hexagonal plug gauge is actually equal to the
caliper specified in GJ/T1214.2
Method 2:
Multiple gauges should comply with (EV157
Starting 2:
JB/T9151.1—1999
Table 2 (Introduction)
Test page and test compensation
Special closed gauge for reading [as shown in 18! : When using the method, the measured diagonal width (internal machine source world [no format
Use serial number 13 as the method 3 specified by the general Measure the depth of the hexagonal base at the end of the hexagonal base!
Method:
Use a 0.02mm caliper to measure along the diagonal edge of the hexagonal hole. Method 2:
H No. 14 Method 2 Special full and full gauge measurement 3
Use the special through-end gauge specified in No. 13 Method 3 to measure the inner large angle flower shape "centering
Compared to the flower shape--type measuring table measurement, size and 0.02mm caliper measurement
The cross grid depth measurement table is used to measure
The width of the opening #
Method 1:
Use a 0.02mm caliper to measure the continental part
Method 2:
See the old pass, stop gauge to mark the width of the ball: Method 1: Use a caliper of 0.02 in the measuring range (according to the groove: the centerline of the convex crown) to measure. Use a dial indicator [sheet measuring head] to select the measurement standard: the width is 1 year older than the inner corner hole (the smaller diagonal width), the length of the gauge, etc. Method: The caliper specified in GBT1214.4 uses the hexagonal shape specified in GB/T6 and the caliper specified in T1214.2 uses GR/T .1 The specified word
Change the test grid
Method 2:
The plug gauge is made in accordance with the provisions of GB/T1957
and the method! :
The caliper specified in GB/T1214.4
Method 21
The dial indicator specified in GB/T1219
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