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1) Standard hardware, nominal dia. : + 0.2 ;+ 0
2) Calibrated bolts, threaded bolts - f7 -, bore clearances H7 or H8.
B. Standard or currently used screws
DESCRIPTION SO C
P / NA T *A MATERIAL
Hex head screw :
- without pin hole (H) Z00.N5102 Stainless steel
XC 18 or
equivalent
- without pin hole Z00.N5101 Steel 35NC6f
T.S. = 880 MPa
- with pin hole Z00.N5104 Steel 35NC6f
T.S. = 880 MPa
Slot-headed screw :
- 90° countersunk head (F / 90) Z00.N5142 Steel XC 18 or
equivalent
- wide cheese head (CL) Z00.N5111 Steel XC 18 or
equivalent
- ,<Poeliers* wide round head (RL) Z00.N5169 Stainless steel
- ,<Poeliers›> wide round head (RL) Phillips screw Z00.N5169 Stainless steel
* SOCATA part numbers are intentionally incomplete. Only the first portion of the part number, giving the part type, is listed.
C. Hex head calibrated screws
DESCRIPTION SO C
P / NA T *A MATERIAL
-without pin hole, short thread -without pin hole
-with pin hole Z00.N5109
Z00.N5109
Z00.N5109 35NC6f steel
T.S. = 880 MPa
or
30NCD16 steel
T.S. = 1080 MPa
* SOCATA part numbers are intentionally incomplete. Only the first portion of the part number, giving the part type, is listed.
WA
Validity : S / N 1 - 9999 51 - Page 201 4 0 - 01 (BA) APR 95
D. "Repair" sizes As a rule, these screws allow 2 repair size possibilities without any thread modification.
R1 = dia. + 0.2
R1 = dia. + 0.5
Example : If a screw hole to be calibrated to 6 H8 dia. is elongated, counterdrill to 6.2 H8 or 6.5 H8 dia. depending on elongation and make a 6.2 h7 or 6.5 h7 dia. screw.
E. Standard nuts
DESCRIPTION SO /
P CNA T *A MATERIAL
Standard hexagonal nut (H) Z00.N5303 A563e
T.S. = 600 MPa
Thin hexagonal nut (Hm) Z00.N5305 or equivalent
Castellated hexagonal nut Z00.N5374 36NC6 steel
Castellated thin hexagonal nut Z00.N5376 T.S. = 880 MPa
* SOCATA part numbers are intentionally incomplete. Only the first portion of the part number, giving the part type, is listed.
F. Self-locking nuts
DESCRIPTION SO / N *CATA
P MATERIAL
Hexagonal (HFr) thick nut - SIMMONDS PA 106 - Z00.N5402 35NC6f steel
Double anchor nut - SIMLOC SR 1009 M - Z00.N5301 25CD4S steel
Simple anchor nut - SIMLOC SR 2009 M - Z00.N5431 25CD4S steel
* SOCATA part numbers are intentionally incomplete. Only the first portion of the part number, giving the part type, is listed.
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本文链接地址：TB20 MAINTENANCE MANUAL 51 标准施工/结构 TB20飞机维护手册(8)
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