【KOBOLD】科寶【PINTER】【ROEMHELD】 等等

KUBLER編碼器8.9081.3222.2004
SCHMALZ備件SAOF 60*23 NBR-60 G3/8-IG
WACO備件ITEM-NO:750-1405
SBA變壓器ETKU 165-0102
Infralytic油膜測厚儀NG2
COREMO OCMEA備件144151
EPE蓄能器AS5P360CGO
KEB變頻器14F5M1E-Y00D  AC3PH400V23.1A11KW
E+H傳感器TMR31-A1XABAAX1AAA
RITTAL壁裝式冷卻裝置SK 3303.100 280mm 550mm 210mm
HEMAU型彈性波紋管10095218
HOFFMANN可調扭力扳手65723525-280(MM 3/8”)
HONEYWELL變送器STG73P-F1100B-0-0-AHB-11S-A-00A0-00-0000
HEMOMATIK備件FLB-FK1-100  60/300-S-Q-ANA
GEFRAN傳感器TK-E-1-M-N05U-2130X000X00
HORA電動比例調節閥MC503/24VAC  球墨鑄鐵體質 PN16法蘭連接  接受0-10V信號 反饋輸出0-10V，DN80
SCHMERSAL定位開關RSS 36-ST-AS-2823  103001531
ELCIS編碼器A/MM1151-G-4096-824-S-CL-R
DITTEL備件F20038  03PZ0164005
ETA斷路器2210-T210-K0M1-H121-5A
GESIPA槍頭V17/29 No. 725 2164
SCHUNK氣爪訂貨號：0301578
TECNAR備件10302-00003-00
SCHMERSAL備件G50-035M22/M22Y-1600-1-1368-3-FL2
WURTHHW型硬質合金空心鉆063012035
WALTHER備件CN-040-2-WS548-0A-2-GG
KUKA驅動模塊KSP 600-3X40 00198268
ASTRO高壓閥nr.13524 5531
INTERFACE備件1210ACK-10K-B
HYDAC回油過濾器RFBN/HC240DE10D1.XL24
AMER備件TIPO:MP56L/3 COD:6901426
B+R中央處理器X20 CP 0292
ETAS備件F?00K?106?978
MICRO EPSILON激光位移傳感器ILD1420
EROELECTRONIC溫度控制器LFS931113000
K+N旋轉開關N-3430，K13271/001 NOS，φC32 440VAC
ISH專用工業顯示器ISH-TFT-Bedienkonsole Panel-Monitor 19" externes Netzteil   Seriennr:15000857 12VDC 5.0A
SCHMALZ真空發射器SCP-25 NO-FS RP-VD550-630
HARTING備件HAN-K4/8-BU-S  09380122701
HYDAC備件1300R010ON/-KB
MTS傳感器RH-M-0460M-P10-1-S2B6100
METRIX振動變送器ST5484E-151-132-00
G.BEE球閥600 CWP PN40 DN8
BURSTER力傳感器8526-6020
MICRO-EPSILON放大單元CLS-K-63 15-30VDC 70mA
FINDER繼電器34.51.7.024.0010
STRACK備件Z7650
BURKERTflow meter型號：8045  訂貨號：449673
RESATRON編碼器RSF58P-29-3-B-W1-DS
DEMAG軌道末端98211444
SCHMALZ吸盤SAB 125 HT1-60 G1/2-1G
REXROTH備件0822434303
SKF流量限定器SP/SMB 8/2/0/210
BEFELD過壓保護電路板B6C-BS-60/3000
SOMMER備件MGP806N/03 CJ034178.001AB
BRINKMANN首節腔體4DESA1GG-F04544
HYDAC傳感器EDS346-3-016-000
JUD導軌SR-894-025-X
GEA潛油泵B2-148G-80
HEIDENHAIN編碼器ERN460 385460-31
PMA波紋管接頭NVBV-M323-13
ELCIS編碼器I/64B-1024-5-BZ-N-CD
SCHUNK傳感器MMS22-S-M8-PNP 0301032
BLICKLE行走輪GTH 250/25K
K+N開關KG20BT103/D-A183STM
PNEUTO閥802 SK 02
IMC插頭ACC/DSUBM-B2
ABB功率接口板SDCS-PIN-48-COAT
MTS編碼器RHM0750MD701S  1B6 102
ARGUS備件Model:FK76M
HONEYWELL位置開關LSM7U  IMMS-802_33
BRINKMANN泵TB63/350+001
FUCHS備件VTE9371 (230V 1200W)
LEUZE光柵尺MLC Transmitter 320R30-1500
KTR聯軸器AR60 φ60/φ48
HYDAC配件ZBE 08S-20 (Coupling socket + 20m cabel)
FIESSLER光柵支柱XLVT1200  1200mm
Sistem Pneumatica單向止回閥111.98.04.10.05 Einweg-Servo-Stop-Verschraubung Anschlu?1/8  4 mm Ursprungsland Italien
HYDAC備件0160 D 025 W/HC
RECHNER備件ISA-10-BA2-A-98.5X64X34.5-AL-Y10/Y20-1
Gilbos備件N-PLS100
REXROTH備件R911326830+R911328741
Observator面板OMC-13   SN:13910708
WIKA壓力變送器HP-2   0-700Mpa   0.25%  4-20mA   9/16-18UNF
DADCO氮氣缸法蘭90.21.00750
BURKERT流量計ID-No: 00440648    FLOW 5039 OPTICAL WHEEL MS G1 1/4 FKM
EUCHNER控制器083513 CES-A-ABA-01B
AFAG備件KLF 25  230V/50HZ  15048476
KNOLL泵KTS25-50-T-G
WEBER備件OFALC4GG1000  NT4-1000A
BENDER備件RCMA472LY B9404207
BRIEM備件GBEL-350RA
MITEC電磁閥TM621207-24VDC/N，PS：2—10bar，TS：5-60℃ 電磁閥線圈24V，4.8W 120mA
VIPA前連接器模塊392-1AJ00
STAUBLI單向閥HPX08 1103 JV
MTS磁壞201542-2
PAULY備件PP2441q308R153Ee2/R153SR2Z3S115
BARTEC加熱電阻器27-563G-SF7P0SEI
FABCOAIR氣缸J-121-X-PM
SCHAFFNER濾波器FN3359-400-99 機床號;89210
E+H備件FMB50-AA21JA1FGAGGJB3U
PMA軟管接頭NVNV-M202-10
DEUBLIN接頭1139-746-301
HELIOS備件AB-NR:20072235 ART-NR:03060013
SCHUNK氣缸1317031（接口為SK50）
BINKS電動泵連接塊193796
HEB備件BLZ400-6-32/20/20.00-206/M1
BENDER備件B91065100
STAUBLI備件G3/8 RBE 06.1102
B+W備件BW1997
INFICON數據電纜INF-SRI-003 560-332 數據電纜 for IO 1000 CU1000 BM1000 2MTR
KISTLER光纖電纜1631C3
BOSCH REXROTH備件21106714/20 F2，5GW0200V
BINDER電機剎車86.61109H52
REXROTH驅動模塊控制單元R911338543_R911339319_R911330278_R911326968
BALLUFF磁尺BTL7-S571B-M0100-B-KA05
PEDROLLO泵PQm60
EURAC制動盤0986478852
SCHUNK備件PGN 125-2-AS-P 371440
ENGLER溫度傳感器PT104.12.12M.190.VS
LEINE+LINDE備件
NOKEVAL無線通用變送器FTR262 433.92MHZ Band F/F1 ID:13695
SAPELEM吸杯1/4 84.040 （84.040.20.F14.1 NBR ）
KEB電機含減速機M71b2  0.56KW  2890rpm  B14  N0:L110117460029002 + NMS50   n2=560   i=5/1  KW=0.55   kom：2011/85773-4
PMA備件VAMLG-17S.50
SHERBORNE張力傳感器T99-AS3503/SS 2000KG
SICK光電傳感器WT24-2B420 with fastening angle BEF-WK-W24 with protection cover
REXROTH備件TYP:CKK-110-NN-1  R055717203
WUERTH備件713128110
BAUER電機BG40Z-81/D08MA4/AM
WIDEPLUS備件WP-8K-11-T09-E042-W
RAHMANN備件ＥＭ１８０ Ｎｒ．Ｈ８４．６２１８２７
SARTRIUS凝膠膜17528-80ACD
SCHUNK夾爪0318472  PGN-PLUS-P  50-1
WEISS備件5.5AZKA 83L-8T  507-638142101
BECKHOFF光纖線纜跳線ZK1020-0101-1000
PANTRON光柵放大器ISM-4000/24VDC 24V
LENORD+BAUER編碼器GEL 2444 KNRG 5K-150
Aventics過濾器（無支架）R412000667
PMA塑料管PUET-48B
MOOG閥D634-319C   閥
MTS位移傳感器RH-S-0150M-D70-1-S1G2100
WINKEL備件506.017025
GBEE備件990.2T RC1/2
VISHAY電容KMKPg 1700-1，0 IA
OTT拉爪95.600.001.3.6
E+L張力傳感器PD2117 NR.00043300
WEBER備件Fuse 22x58 100A aM
PMA軟管接頭NVNV-M202-10
PHOENIX備件FL/SWITCH/MCS/14TX/2FX 2832713
BEI備件PHM912-1312-004（PHM9_12//PSSG//13B12D5//S6R// S/N.201602291948/5）
ANSWERDRIVES整流回饋單元SPDMR2K5K5040(配套手操器SPDI1、電纜SPDKS)
HYDAC壓力繼電器EDS348-5-016-000
MAHLE濾芯PI72010DNPSVST6
BRAUN轉速探頭A5S05B50
EVB夾爪4-G10094 Schunk gripper 30083803
RECHNER備件AS-80-A24-A-M30-PTFE/MS-Y3-1
HEIDENHAIN編碼器DSLHEI746721-01
CELDUC固態繼電器SUL865070  AC510V / 32A
EMC控制柜冷卻風扇RB4C-225/062 K081 230V 0.18A 40W 1650/1400min-1
WIKA備件P-30-P-EG525-GDZZ-B-M4Z-ZZ   82160192
ADDA備件FC112MT-2  NO.A5020596
LTA離子線4.00167(420584)
PREMA備件PQVF  DN100
PROMINENT備件包1035964
ABB伺服閥MFE460A016BW
EBERLE溫度調節器RTR-E 6724
IFM感應開關Si5000 P/N:Sid10ABBFPKG/US
WEIGEL分流器800.4420.S.10KA.30mV
STENFLEX備件AR-2  DN150  EPDM PN 25
SETRA備件2641005WD2DT1C
SELET電眼B60122POC5
ORTLINGHAUS內摩擦片3100-140-25-000000
NEXON流量指示器TURBINE FLOW METER BSPP FEMALE THREAD FTB200 GF 06 TC B 10L 1 DWEVS A420 S
HYDAC濾油器堵塞發訊器VD5D.O/L2.4 帶插頭
SAV磁力控制器SAV 876.10-360/30-440
ARCOTRONICS電容器C.87.8AF3 MKP，30μF，±5%，420V~30000h/470V~10000h
KELSAN潤滑塊CODE：101RW055
LAPP備件NR.0027951 ?LFLEX SERVO FD 796
SCHUNK備件301284
B+R模塊X67AL1223
FIESSLER備件TLCT1200/48S
ORTLINGHAUS內摩擦片3100-140-25-000000
HCS控制器DMA-22-01-270-4MSTBU-SO
BAUMER超聲波測距傳感器UNAM 70U6131/S14
BADGER備件1001GCN36SVOPP01S6
IEMCA GIULIANI備件601032331
BAUER傳感器IFRM 03P1501/KS35L
FAIRCHILD減壓閥10262C
MICRO-EPSILON拉線式編碼器WDS-7500-P115-SR-SSI
MURR ELEKTRONIKM12連接器7000-12481-0000000
HOFFMANN備件433050-30158
BAUER電機BS06-64U/DV04LA4-ST
RESATRON編碼器RSM5813+12-G-3-V6-RSGUB   0-30VDC 25BITMULTI-TURN SSL SERVOFL 6MMWELLESER NR：220604634
LAPP備件4726116
SUCO備件0180-45703-1-101
LOGOPAK貼標機 CPU 電路板ser.no：2110495 cpu電路板
KYTOLA備件SLM3 0.1~3L/MIN24VDC
DI-SORIC光電開關OHT30K150P1K-TSSL 20142
HYDROTECHNIK備件SDDB-B-10-SM
HYDAC濾芯0330D005 ON
vision-control備件1-29-657
HYFRA水冷機sigma-C9-S 13030446
TWK編碼器CRF65-4096G4096C01
SWR備件5071672
SCHUNK備件0371399   PGN-plus-50-1-AS
ETA24V開關ESX10-TD-101-DC24V-2/4/6A
BECKHOFF電源電纜ZK2020-3200-0100彎頭
HONEYWELL液位計CT801-SI 350/1050 mbar
ATLAS拋光機G2407-M14 3400轉 直心
MAICO風機DZR 25/84B
SETTIMA備件GR60 SMT16B 440LAC38GPRT2   053883
FETTE傳動齒輪2172154
SCHNEIDER環形刻度板ZB2BY9330C
MENZEL備件SO4  83997
RECHNER備件AS-80-A24-A-M30-PTFE/MS-Y3-1
A+K平衡流量計KPF-V601GP1214-DN150
BAUER電機BS04-61U/DC04LA4/MG
DEMAG信號控制器FGB-2 645145847
FINDER底座90.21
DR.BREIT備件405040 006
STEUTE保護開關ZS752O/2SVD 75.4.41.5.01
FUCHS濾芯TKFA05  305x305x115MM
K+N開關CH10-A214-600-KD1-G411/G
MECAIR電磁閥VEM214
NORGREN備件M/50/EAP/CP  SPC/000232
WEBERproxi-captor2610.30
MOOG泵D957-2003/D
HYDAC傳感器EDS346-2-016-000
HYDAC壓力傳感器HDA3840-A-400-124(15M)
CIRCLE備件249B-6PP
LIKA備件AMC5812/4096BS15-ER
SONTHEIMER備件U3/8ZM/X70A/Z15/NS 3-POL STELLUNG:1-0-2
HEIDENHAIN濾芯337147-01
SCHMERSAL備件CSS-T/1190026
HYDAC壓力傳感器HDA4445-A-060-000
MESA直插式氫探頭MF060.93.200 MK720-H2
ROEMHELD油缸1955-874/01.102870
E+L執行器AG2591 227057
REXROTH溢流閥ZDBT-XP2-1X/315  MNR:0811104113
ELSO萬向十字軸0.650.104.5000
KTR聯軸器6 003 004 003 ALU24-A10  SPIDEX
IFM光柵連接線EVC002
LEUZE光柵尺MLC Transmitter 320R30-900
RITTAL加熱器SK3107000\AC110-240V 130/200W
AC-MOTOREN電機AC07A2100003 FCA 71 A-2
DEUBLIN旋轉接頭1121-910-913
HYDAC濾芯0160DN020 BN4HC
IGUS*電纜CF30.60.04
BLITZ備件6371022
MOOG閥D136-001-007
E+L糾偏電眼300101
WOLFTECHNIK濾芯WFMB005-30-V5  5μm
HBM稱重傳感器Z6FD1 100KG
COAX備件5-VMK 25NC  54 25C111/4BD 24L 40A 300381
FISCHER備件DE2802N292PL;0-1bar;DC/AC 24V
E+H水位開關FTL31-CA4M2AAVBJ
VSE流量計VS4 VS4GPO12V12A11A/4 24V DC
REXROTH空氣分配器R431005005
LUMBERGM12分線盒ASBS 8/LED 5-4（11130）
MURR備件2000-68400-4400000
SCHUNK傳感器0301370
BRINKMANN泵總成SBA403-65X+087
MAGNEMAG皮帶輪訂貨號：MT0026，MAGNEMAG，(在線噴印機、探傷儀專用機械備件，NO.3噴印機)
ELOTHERM備件218808
HEIDENHAINZ軸編碼器Id.Nr. 312 215-14
E+H壓力變送器PMD55-AA21BA27BGBHA4A1A+AK
HBM備件K-T40B-002R-MF-S-M-DU2-0-S
ElringKlinger油封0779.0320 ET0001 30*50*8
HAGGLUNDS電源376 0071-801
THIERRY備件300002119
EMILE MAURIN備件32-635-12-8
E+H備件PMP71-AAA1K211AAAA
STENFLEX波紋補償器SF-10 LR DN25*125/PN16
ENTRELEC備件165-115-10
EPC編碼器ACCU-CODER  S/N 2000803154  TYPE：702-21/L-S-2000-R-HV-1-ZH1-N-SG-N-N 5-28V
BAUMER傳感器IWFM 12L9504/S35A
AB伺服控制器2098-DSD-020
ATLAS COPCO減振式氣動鉚錘3520 0351 00 RRH 04P-02
FRIZLEN制動電阻FDWZ5150302-56
FEMA壓力開關PRESSUREMONITORF1 壓力開關F1Type:DCM16閉鎖壓力：0.85Mpa防護等級：IP54（匹配HEK-4型斷路器操作氣罐專用）
BERARMA備件02-PVS05-10-F-L-R-M
TWK編碼器DAF-105-12*V4170*B01
BURKERT電磁閥插頭電磁閥插頭    LED+VDR 008369  200-240VAC/DC
E+H備件PMC131-A31F1A1H 0-1MPa
FLENDER聯軸器緩沖塊N-EUPEX 315
HYDAC散熱器RADIATOR OK-EL/4/5/2.0-3.0  sap code:3083731
SERFILCO電機YS90L-2 NO.14083676
MAHR輪廓儀測針6851527
ELCIS備件I/Y115-1029-18282-BZ-N-CW-R-03
ZIMMER工件夾具MKS2001A
HAM-LET備件hmb21-4vklclc-gf4  SN：2712865 288114
HARTMANN+BRAUN備件P.11471-0-1011015
AMTEC備件K-031.185.600N-M100*3
HYDAC堵塞檢測傳感器VD 5 LZ.X/-BO-LED 1276537
KUKA備件00192297
HYDAC備件0240R010BN4HC/-KB
B+R電纜8BCH0025.1111A-0
MAHLE濾芯P123025RNPS
FERRAZSWITCHTYPE FUSE BREAK P/N:PS201PREMCPS
HONSBERG流量計轉換器OMNI-F-015HK029S 24VDC 螺紋安裝
KUBLER編碼器8.5888.5431.3112
ROLAND接收傳感器IE42-30GS
LUMASENSE高溫計3856 390
ACE緩沖器MC600MH2-M25
JUMO溫度開關ATH-20
B+R模塊X20BB80
DI-SORIC連接線TKHM-W-2.5
PHOENIX斷路器TCP 20/DC32V - 0700020
HYDAC壓力傳感器HDA3840-A-400-124
VEGA信號處理表DIS82.AXHKIMACX
FRIEDRICHS雙濾器4.225-20.060.L1-P-5.02-2.0-F2.20
RITTAL空調SK3302200
TELEGARTNER電纜接頭J01150A0611
WEG電機W02-313S/M(132KW.1480r/min）B3
ROEMHELD輔助支撐1942012
WENGLOR備件XK89PA7
NEXON流量指示器TURBINE FLOW METER BSPP FEMALE THREAD FTB200 GF 10 TC B 20L 1 DWEVS A420 S
BAHCO鋸條3860-34-1  1-3/4-4400
JAQUET頻率轉換器T501-384Z-05600AC
PROCOM備件Serv.Nylon D050 NA
SCHUNK夾爪PGN-plus 200-1 0371105
ETA斷路器ESX10-TB-102-DC24V-12A
BECKHOFF備件BK3120
ARIS執行器NK6015   訂貨號:1304-85748-03002
SCHUNK氣爪貨號是 0304365  DPG-PLUS-200-1-IS
JAHNS備件Md4-315/5(DIN5480/N40*2*18*9H)
ROBERT電機5AP90L-4(7AA) 1.5KW
PHOENIX斷路器TCP 30/DC32V - 0700030
HEIDENHAIN編碼器ID 560 526-07
BAUMER風輪位置編碼器GM400.A10A304
MAYR備件7/500.200.0
TWK備件CRD66-4096R4096C2Z01
NORIS液壓螺母121.06.180-03 tr160*5r
SCHUNK夾爪0371153
MICRO EPSILON傳感器ILR1181
MTS備件RHV1000MH101A01
EWO備件R3/8 323.531
BOSCH REXROTH液壓油缸配套密封R900847956
WIKA壓力變送器S-11 0~4BAR 4~20mA 10~30VDC
HYDAC備件EDS 348-5-250-000 25Mpa
EUCHNERsafety switchCES-AZ-AES-04B 104780
NUMERIK JENA電器件LIA20-C001-B014-NAS
JMCONCEPT備件PLTB01 91000789配套插座
WIELANDER+SCHILL備件WS-671001
K+N開關K20A T203/01E/H0101A/A11-E
MINIMO研磨機CM40212/C2212
RICKMEIER齒輪泵GP-R35/40 FL-Z-DB-SO
HOMMELWERKE備件TS1 KE2/90GD T1.9 D4/30 Art.-Nr.240805
POCLAIN液壓馬達MS11-1-111-A11-2A10-E000
LUMBERG接近開關連接電纜Model:RKWT 4-225 10M 1018
GHR維修包BS1806-012
HYDAC濾芯0660D005ON
BALS電纜插頭63-6h 200/346 240/415 3P+N+〨 Typ：215
BK MIKRO斷刀檢測器TK4K ID：6304210
SCHMERSAL備件RST 36-1
CSMTDC寫卡器ART0020711
HYDAC高壓球閥KHB-G3/8-1212-03X NG10 50Mpa
WURTH備件071540/03
PHOENIX斷路器TCP 30/DC32V - 0700030
B+K備件4371
HERRMANN整流器HS 48 E-DB 60/78-400 A5
K+N轉換開關DH10-1 AT12U417-90/000100 A-G926
GEMU閥1201000ZA001013001104 I-DE-88031610-00-2611228
B+R安全數字量輸入模塊X20SI4100
VISHAY備件PHMKDG 690.2.49.80
EUCHNERY型分線器Artikel 097627 Y-VERTEILER M12
INTERNORMEN濾芯01.NR .1000.32227.10VG.25G.25.B.V-.S1
FANAL備件FF4-10VDS DAI
HYDAC壓差開關VM2C.0
PILZ繼電器PNOZX2.1  774306
BSD備件BN310-RZ-2503
BECKHOFF數字量模塊EL2622
PNEUTO氣缸T-125-2 300Nm/5bar
SCHUNK備件0301034 MMSK 22-S-PNP
KUBLER備件8.5000.6324.4096
EISELE備件17-0306SMS
K+N開關KG41-K305-D-A002
SCHUNK變徑套207922
KELLER壓力變送器PA-23SY 0-100bar
EISELE直通接頭VT2628-0409
PHOENIX備件3036110
ZIMMER備件WER2000FSI32-05
STEMMANN滑環6262786(345)LP103 61 WEGE PE+12X10A/230V+42X10A/24V+6XBUS
ELEKTRA電機1TZ90011CB634FA4-Z
HWS維修包維修包 配套油缸 Sinto：125/90*2300Hub  Zn.-Nr.01.23399   11333
B+R備件X67DO1332
DOMNICK HUNTER過濾裝置DAS7  11DAS051314
E+H電導率變送器式oder code:CLM253-IS8110 serial on:K5092C05G00  range:0-2000mS/cm 4-20mA 24V AC/DC
HBM稱重傳感器PW10AC3/50KG
HBM單直片1-LY61-3/120
STEARNS剎車機構1087031A0 QF
MTS備件RHM0060M  P02 1 S1B6100
BURSTER壓力傳感器8526-6010 10KN
INTRA流量計變送器INT 433-1DA02-1AB6-Z   B221-9019918
KIEPE備件PRS001
SONTHEIMER轉換開關URR1/11EHS/Z8/Z16
ELSTER備件J48 1-1/2" BAT NO 0547552098 SCREWED SPRING RANG:5~15MBAR
AVTRON活套編碼器HS25AY1QWE0AA0ZA
NEUHAUSER備件GEI4/20  0ET155KIN0005 MAGNETSYS.20A，230..500VAC
BRINKMANN葉片泵TS21/190+001
HYDAC濾芯0060R020BN4HC
FSG線性傳感器PK1023-257/337.5  S-NR：5930Z01-328.043
BUEHLER液位傳感器NIVOTEMP63-KN-M3 L=970mm 4-20ma
WIKA變送器TYPE:A-10 0...10bar 4-20mA 8-30V S# 1A006DDMLIF P#13057316
WEIGEL表FU2.0  26000272
HYDAC液位繼電器ENS3216-3-0730-000-K
MAXIMATOR氣動泵S35訂貨號3130.0198  1:39
LAIPPLE KEB備件M56B4
GSR線圈2/529-25-0815-.322  1-220 bar
HYDAC濾芯Filter2?m-BDE400F2W1.0/-ELF