This part specifies the cross recessed small pan head screw and flat washer assembly with thread specifications of M2 to M8, flat bearing surface, mechanical property grade of 4.8, washer hardness grade of 200HV, and product grade of A. The washers in this assembly should be able to rotate freely without falling off. GB/T 9074.5-2004 Cross recessed small pan head screw and flat washer assembly GB/T9074.5-2004 Standard download decompression password: www.bzxz.net

ICS 21.60. 10
National Standard of the People's Republic of China
GB/T9074.5—2004
/T 90*4. 6—.858
Crss recessed srhall pa head acrew andl washer assemhlieswithplainwashers
2004-02-10 Issued
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China National Standardization Administration
2004-08-01 Implementation
Part of the international standard "tight parts-assembly cattle\product series standard" is one of the following. The list includes: GB/T $074.1--2002
Snail selection snail line level wine assembly
G5/T9074.21988
GH/T 9J74. 3-J!X4
GR/T 9074.4-938
GB/T 9572.:—2004
C3/T 604,?
G/T74.—1388
GR/T 9074.9*988
GHT 9074.10
Cross head nails and external tooth parts need to be combined: cross head nails and spring ring parts: ten-point dry nails, single ring and flat ring parts, small pan head screws and flat round parts: one-point small natural head screws and spring washers: cross cotton small pan head screws, spring washers and flat washers: two-point countersunk head and flat locking rod combination, solid screws and chain-shaped dynamic single parts; ten-point concave hexagonal head and flat washers: GH/T SU.2-UX
G3/T!071,15-1988
B9074.1509
Word oil concave hexagonal head and spring washer assembly: GI/T 9074.5—2004
Supreme corner inserts, countersunk pads and half-pad assemblies, hexagonal screws and spring-loaded joints: G/T 2074.16
61988 Hexagonal screws and external saw-shaped assembly: GH/T 9174.1%—158
GB/T 071.I—C?
q)Gk/T 9074.202331
Input negative head combustion selection, elastic pad test and peace diagram assembly parts: medical
Ning description called six hexagonal head education modification screw order and peace circle group will be some of the parts are GB part:
This part replaces 6/=0074.—%% word disk head ticket and vertical parts (4/S074.61938-word change small head combustion nail and person pad diagram combination standard 3
car part GBT07450 and/74.6158 to seat planning: the two-person mountain standard introduction is combined into one standard; training 7V2, M3.5MK frequency specifications (see Table 1): increase! Plastic drawing (5 type series gives a total of 5 types of optional drawings as prohibited types (1): adjust the thickness of the pad mesh (pool table [
select Guangkuai Medical Communication, 2:
Pei Jia combined use of operation and block code (see table) a new assembly standard allows the force method to see the 5th space. This part was proposed by the Ten-nation Machinery Industry Federation. A Imperial Mountain National Firmware Standardization Technical Committee (5A (T:) unified, this part was initiated by the Mechanical Science Research Institute. The previous versions of the original proposal are: G13/T1074.1985:
G147 T $74. 6 .053.
1 Scope
Cross recessed small pan head screw and flat washer assembly GB/T9074.5—2004
This specification specifies the cross recessed small pan head screw and flat washer assembly with a cross recessed small pan head screw and flat washer ... tt||The following documents are the series of this part through the use of this part: All documents with a date of month, and any subsequent revisions or revisions are not applicable to this part, however, it is encouraged to use these documents in a new form, record the date of the document, and its quality is updated in this standard:
C0,1 Fastener inspection +/0.1--23,1 3769.20GB/=90.Purple parts standard packaging
15/flat sitting figure needle and base national components (GH/T97.420C2, 9JS01C673:1398GB 82 cross gear small pan head pliers
15 fasteners standard method (/1372.0)8931:1986G01 parts performance ordering G33082000889R-99K/326.1 parts electroplating (G/T267.12002.1504C42:933.IDT)3
3.1 The size of the probe nail (compared to the correction 1) in the assembly, the part of the whole assembly should be pressed according to the requirements, and the rest of the parts should be combined (/T23 of the current:
need to be ordered from the diameter of d. (See Figure 2) of the year, the dynamic light should meet the G BU7.4, with free rotation: 8 middle diameter
support and the distance between the first buckle and the carbon, should be large enough to accommodate the maximum guide in the gasket carving, for this type of product, the screw effect is restricted according to the position of the recovery,
transition craftsman rush to see the figure? The transition net is less than 1% of the transition net specified in G&23, and the difference in the nominal diameter is reduced by the pressure dry system hair bad diameter, G/T2 page specified curvature, and the components should also be changed. 3.2 The size of the half figure is the standard of G/T97.4. :B/9074.52004
a full frequency limit combination
Figure 1 Cross recessed small pan head screw and flat washer assembly shown in Figure 2 through the country diameter and rod diameter
Table 1 size
flat washer expansion sizewwW.bzxz.Net
frequency effect,
as much as possible in meters! Accept the idea of ​​​​the small series
standard Hong Kong list
Male list
The pad diagram is flat and the complete state effect is large. When the rough plane is printed with the ring specification> state disk, the pad should be connected with the support surface to the head.
Our GL/T97,4 R+ is only a reference point
Technical parts and reference standards
Technical strips and industry standards are shown in Table 2
Machine ladder
Collection and packaging
Table 2 Technical missing parts and reference standards leak
t+hI N?X.
GB/T 9074.5~2004
The detailed technical requirements are according to (+H/1577,1
GHI M1GHT2
Contact CE/TS.1.2.1.2 Marking
5.1 The marking of the parts shall include the following: Description of the part:
National research and development number:
Characteristics of the screw
Type code (state):
…Test type code (see 3)
Table 3 Type code of end nails and washers
Tianjin increase the limit of small pan head
Use customized drawings
5.2 Marking method shall be in accordance with G3/T1237
5.3 Marking example
Marking number
GB/T 823
Small pan head end order package, -B/825248 grade code S and GB97.4 mark as cumulative plastic (less number N) agent surface galvanized purification (omitted mark> actual mark: screws and some drawings Taiwan cattle GB/19374.5M5×20)S1N cross small rate and ring year parts include: 28M5204.8 sensitive nails (code S1 a GT/T7.1 people series pad number:.> positive surface debt with chaos (omitted road mark 1 mark: screw and potential components M: 1 "
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