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Mofuta oa II Cross Recessed Flat Countersunk Head Tapping Screws - Mofuta oa B le BP Thread Forming [Letlapa la 12]

Eba le boits'oaro bo botle ba likhoele le ho tiisa ka mokhoa o sireletsehileng ka li-screw tsa mofuta oa II cross recessed flat countersunk head tapping screws tse nang le bokhoni ba ho etsa likhoele tsa Mofuta oa B le BP, tse tsamaellanang le maemo a ASME B 18.6.4 - 1998. Khetha ho tšepahala le ho feto-fetoha ha maemo bakeng sa litlhoko tsa hau tsa kopano.

Mohlala:ASME B 18.6.4

Romela Lipatlisiso

Tlhaloso ea Sehlahisoa

E E Efficient Thread Formation:ASME B 18.6.4 - 1998 e tsamaellanang ea Mofuta oa II oa li-screws tse nang le li-screws tsa hlooho tse bataletseng tse nang le mofuta oa B le khoele ea BP li netefatsa hore ho etsoa khoele hantle nakong ea ho kenya. Tšobotsi ena e nolofatsa ts'ebetso ea kopano ka ho felisa tlhokahalo ea ho cheka pele.

Secure Fastening:Li-screws tsena li na le bokhoni ba ho etsa likhoele tsa Mofuta oa B le BP, tse netefatsang ho tiisa ka mokhoa o sireletsehileng le o tšepahalang. Li fana ka ho ts'oara ka thata, ho fokotsa kotsi ea ho lokoloha kapa ho hlobola, ka hona ho matlafatsa botšepehi ba likarolo tse kopaneng lits'ebetsong tse fapaneng.

Tšebeliso e fapaneng:Li loketse ho sebelisoa ka mefuta e mengata ea lisebelisoa, ho kenyeletsoa tšepe, polasetiki le lehong, li-screws tsena tsa ho tlanya li fana ka mefuta e mengata ho liindasteri tse fapaneng. Ho lumellana ha tsona le thepa e fapaneng ho li etsa tse loketseng merero ea kaho, ea mapolanka le ea tšepe.

Kaho e Ts'oarellang:E entsoe ka thepa ea boleng bo holimo, li-screws tsena li hahiloe bakeng sa ho tšoarella le ho thibela kutu, ho netefatsa ts'ebetso ea nako e telele libakeng tse thata. Kaho ea bona e matla e etsa hore e tšoanelehe bakeng sa lisebelisoa tsa ka hare le tsa ka ntle.

Nominal Diameter
d

d	Boholo ba Lebitso
L	min
d_k	max
d_k	min
k	Ref.
M	Ref.
t	Ref.
N	Ref.
Botebo ba ho kenella	max
Botebo ba ho kenella	min

0.0600	0.0730	0.0860	0.0990	0.1120	0.1250	0.1380	0.1510
1/8	5/32	3/16	7/32	1/4	1/4	5/16	3/8
0.112	0.137	0.162	0.187	0.212	0.237	0.262	0.287
0.096	0.120	0.144	0.167	0.191	0.215	0.238	0.262
0.035	0.043	0.051	0.059	0.067	0.075	0.083	0.091
0.078	0.092	0.114	0.133	0.151	0.169	0.188	0.206
0.036	0.048	0.060	0.072	0.082	0.094	0.106	0.118
0.021	0.024	0.027	0.030	0.032	0.035	0.038	0.040
-	-	0.040	0.053	0.064	0.077	0.089	0.101
-	-	0.029	0.041	0.052	0.064	0.075	0.087

Nominal Diameter
d

10#

12#

1/4

5/16

3/8

7/16

1/2

d	Boholo ba Lebitso
L	min
d_k	max
d_k	min
k	Ref.
M	Ref.
t	Ref.
N	Ref.
Botebo ba ho kenella	max
Botebo ba ho kenella	min

0.1640	0.1900	0.2160	0.2500	0.3125	0.3750	0.4375	0.5000
7/16	1/2	9/16	5/8	5/8	5/8	3/4	3/4
0.312	0.362	0.412	0.477	0.597	0.717	0.760	0.815
0.285	0.333	0.380	0.442	0.556	0.670	0.715	0.765
0.100	0.116	0.132	0.153	0.191	0.230	0.223	0.223
0.224	0.260	0.297	0.344	0.432	0.509	0.554	0.593
0.124	0.148	0.172	0.195	0.252	0.302	0.332	0.358
0.043	0.048	0.054	0.061	0.074	0.086	0.092	0.098
0.113	0.137	0.162	0.193	0.251	0.303	0.332	0.359
0.099	0.122	0.145	0.176	0.232	0.281	0.310	0.335

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