The Flanged Round Bronze nuts FBN, OFBN & FBNEL are compatible with the following POWER screw sizes. These flanged nuts are for use with Mild and Stainless Steel POWER screws. Using a Phosphor Bronze nut especially designed for continuous movement with excellent wear resistance ease of attachment is aided by the fixing holes situated on a PCD on the Flange . As with all bronze nuts good lubrication is recommended.  Choose from 3 basic sizes called FBN, OFBN & FBNEL which compliment all of the POWER screws we supply. Other sizes can be supplied on request.

FBN Nut Material. Cu Sn5 Zn5 Pb5-C (CC491K) Bronze. This is our most popular and cost effective series offering excellent low cost power transmission.  This flanged nut design does not have counter bored mounting holes, so the fixing bolts will stand proud on the flange face surface. OFBN Nut Material - G-Cu Sn12 UNI 7013-72 Part 2° (GB-Cu Sn12 DIN 17656) A cost effective nut with counter bored mounting holes so that the fixing bolts can be flush with the flange face. FBNEL Nut Material  EN 1982 Cu Sn12-C-CC483K. Please note that the nut type FBNL features an extra long bodied nut dimension for higher load capacity as well as counter bored mounting holes so that the fixing bolts can be flush with the flange face. Need assistance on choosing the right nut - call us on 01386 421005

Part Numbers

FBN - Flanged bronze nut

FBN Diagram

Nut
Stock no.
RIGHT
Nut
Stock no.
LEFT
POWER SCREW
Diameter x lead
d1
mm
d2
mm
d3
mm
d4
mm
L
mm
S
mm
Number of
fixing holes
holes
Weight
kg/each
*At mm2
FBN 10 T RFBN 10 T LTr 10x22534425251060,164250
FBN 10 J RTr 10x4 (P2)2534425251060,164250
FBN 12 A RFBN 12 A LTr 12x32838486351260,276400
FBN 12 B RTr 12x6 (P3)2838486351260,276400
FBN 14 R RFBN 14 R LTr 14x32838486351260,272460
FBN 14 B RTr 14x6 (P3)2838486351260,272460
FBN 16 A RFBN 16 A LTr 16x42838486351260,260530
FBN 16 B RTr 16x8 (P4)2838486351260,260530
FBN 18 A RFBN 18 A LTr 18x42838486351260,247610
FBN 18 B RTr 18x8 (P4)2838486351260,247610
FBN 20 A RFBN 20 A LTr 20x43245556,5441260,370870
FBN 20 B RTr 20x8 (P4)3245556,5441260,370870
FBN 22 A RFBN 22 A LTr 22x53245556,5441260,3601030
FBN 22 B RTr 22x10 (P5)3245556,5441260,3601030
FBN 24 A RFBN 24 A LTr 24x53245556,5441260,3371040
FBN 24 B RTr 24x10 (P5)3245556,5441260,3371040
FBN 26 A RFBN 26 A LTr 26x53850626,5461460,5161280
FBN 28 A RFBN 28 A LTr 28x53850626,5461460,4721200
FBN 28 B RTr 28x10 (P5)3850626,5461460,4721200
FBN 30 A RFBN 30 A LTr 30x63850626,5461460,4211370
FBN 30 B RTr 30x12 (P6)3850626,5461460,4211370
FBN 32 A RFBN 32 A LTr 32x64558706,5541660,7791710
FBN 32 B RTr 32x12 (P6)4558706,5541660,7791710
FBN 36 A RFBN 36 A LTr 36x64558706,5541660,6941950
FBN 36 B RTr 36x12 (P6)4558706,5541660,6941950
FBN 40 A RFBN 40 A LTr 40x76378958,5661661,7882650
FBN 40 B RTr 40x14 (P7)6378958,5661661,7882650
FBN 44 A RFBN 44 A LTr 44x76378958,5661661,6572940
FBN 50 A RFBN 50 A LTr 50x8729011010,5751862,5004540
FBN 60 A RFBN 60 A LTr 60x98811013012,5902064,2605490
FBN 70 A RFBN 70 A LTr 70x109512014012,51052265,3037500

* At - Total bearing surface between the screw and nut. (Required for life expectancy calculations)
Other sizes can be supplied on request

 


OFBN Flanged bronze nut - (Counter sunk flange)

OFBN Diagram

Nut
Stock no.
RIGHT
Nut
Stock no.
LEFT
POWER SCREW
Diameter x lead
Thread
starts
d1
mm
d2
mm
d3
mm
d4
mm
d5
mm
p
mm
L
mm
s
mm
Number of
Fixing
holes
Weight
kg/each
*At mm2 (1)
OFBN 10 A ROFBN 10 A LTr 10x311826374.57.54.222840.088294
OFBN 12 A ROFBN 12 A LTr 12x311826374.57.54.222840.082362
OFBN 12 B RTr 12x6 (P3)21826374.57.54.222840.082362
OFBN 14 A ROFBN 14 A LTr 14x412030425.59,55.2251040.123470
OFBN 16 A ROFBN 16 A LTr 16x412232455.59,55.2301040.149660
OFBN 16 B RTr 16x8 (P4)22232455.59,55.2301040.149660
OFBN 18 A ROFBN 18 A LTr 18x412535485.59,55.2351040.188880
OFBN 20 A ROFBN 20 A LTr 20x413040525.59,55.2401040.2671130
OFBN 20 B RTr 20x8 (P4)23040525.59,55.2401040.2671130
OFBN 20 D RTr 20x20 (P5)43040525.59,55.2401040.2701100
OFBN 22 A ROFBN 22 A LTr 22x513040525.59,55.2401040.2471225
OFBN 24 A ROFBN 24 A LTr 24x513548626.5116.5451260.4081520
OFBN 25 A ROFBN 25 A LTr 25x513548626.5116.5451260.3931590
OFBN 25 B RTr 25x10 (P5)23548626.5116.5451260.3931590
OFBN 25 E RTr 25x25 (P5)53548626.5116.5451260.3931590
OFBN 26 A ROFBN 26 A LTr 26x513548626.5116.5451260.3781660
OFBN 28 A ROFBN 28 A LTr 28x514053686.5116.5501260.5322000
OFBN 28 B RTr 28x10 (P5)24053686.5116.5501260.5322000
OFBN 30 A ROFBN 30 A LTr 30x614053686.5116.5501260.4972120
OFBN 30 B RTr 30x12 (P6)24053686.5116.5501260.4972120
OFBN 30 F RTr 30x30 (P5)64053686.5116.5501260.4922590
OFBN 32 A ROFBN 32 A LTr 32x614053686.5116.5501260.4552277
OFBN 35 A ROFBN 35 A LTr 35x615063788.5148.5601560.8833015
OFBN 36 A ROFBN 36 A LTr 36x615063788.5148.5601560.8543110
OFBN 40 A ROFBN 40 A LTr 40x715568848.5148.5651561.0663727
OFBN 40 B RTr 40x14 (P7)25568848.5148.5651561.0663727
OFBN 40 E RTr 40x40 (P8)55568848.5148.5651561.0753675
OFBN 44 A ROFBN 44 A LTr 44x715572908.5148.5651561.0294135
OFBN 45 A ROFBN 45 A LTr 45x815572908.5148.5651560.9994186
OFBN 50 A ROFBN 50 A LTr 50x81658010010.51710.5802061.7495780
OFBN 55 A RTr 55x91658010010.51710.5802061.4756345
OFBN 60 A ROFBN 60 A LTr 60x91759512012.51912.51002562.9278718

* At - Total bearing surface between the screw and nut. (Required for life expectancy calculations)
Other sizes can be supplied on request

 


FBNEL Flanged bronze nut (Extra Long, Counter sunk flange)

FBNEL Diagram

Nut
Stock no.
RIGHT
Nut
Stock no.
LEFT
POWER SCREW
Diameter x lead
d1
mm
d2
mm
d3
mm
d4
mm
d5
mm
p
mm
L
mm
s
mm
Number of
Fixing
holes
Weight
kg/each
*At mm2 
FBNEL 14 A RFBNEL 14 A LTr 14x42030425.59,55.2421040.151790
FBNEL 16 A RFBNEL 16 A LTr 16x42232455.59,55.2481040.1831056
FBNEL 16 B RTr 16x8 (P4)2232455.59,55.2481040.1831056
FBNEL 18 A RFBNEL 18 A LTr 18x42535485.59,55.2541040.2331356
FBNEL 20 A RFBNEL 20 A LTr 20x43040525.59,55.2601240.3681696
FBNEL 20 B RTr 20x8 (P4)3040525.59,55.2601240.3681696
FBNEL 22 A RFBNEL 22 A LTr 22x53040525.59,55.2601240.3381838
FBNEL 25 A RFBNEL 25 A LTr 25x53548626.5116.5751560.5862650
FBNEL 25 B RTr 25x10 (P5)3548626.5116.5751560.5862650
FBNEL 25 E RTr 25x25 (P5)3548626.5116.5751560.5862650
FBNEL 28 A RFBNEL 28 A LTr 28x54053686.5116.5901860.9033600
FBNEL 28 B RTr 28x10 (P5)4053686.5116.5901860.9033600
FBNEL 30 A RFBNEL 30 A LTr 30x64053686.5116.5901860.8413816
FBNEL 30 B RTr 30x12 (P6)4053686.5116.5901860.8413816
FBNEL 30 R RFBNEL 30 R LTr 30x34053686.5116.5901860.7843816
FBNEL 32 A RFBNEL 32 A LTr 32x64053686.5116.5901860.7654100
FBNEL 35 A RFBNEL 35 A LTr 35x65063788.5148.51052061.4395277
FBNEL 40 A RFBNEL 40 A LTr 40x75568848.5148.51202561.9376880
FBNEL 40  I  RTr 40x105568848.5148.51202561.9866597
FBNEL 40 B RTr 40x14 (P7)5568848.5148.51202561.9376597
FBNEL 40 Q RTr 40x45568848.5148.51202561.9296597
FBNEL 50 O RFBNEL 50 A LTr 50x6658010010.51710.51503063.00710840
FBNEL 50 A RTr 50x8658010010.51710.51503063.07510840
FBNEL 50  I  RTr 50x10658010010.51710.51503063.12710600
FBNEL 60 A RFBNEL 60 A LTr 60x9759512012.51912.51803564.79715700

* At - Total bearing surface between the screw and nut. (Required for life expectancy calculations)
Other sizes can be supplied on request


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