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Gang Channel – FBL10050 Series

Material:

image

Nut: 4140 or 8740 Alloy Steel per MIL-S-5626 or MIL-S-6049.

Channel: 7075 Aluminum Alloy per QQ-A-200/11, QQ-A-250/12 or

QQ-A-250/13.

Clip: 302 CRES Steel per AMS 5688 or ARMCO 18-2MN* CRES.

Heat Treat:

Nut: Per MIL-H-6875.

Channel: Aged to T6 temp per MIL-H-6088.

Finish:

Nut: Cadmium plated per QQ-P-416, Type I, Class 2, and dry film lube per MIL-L-46010.

Channel: Anodized per MIL-A-8625, Type II, Class 1.

Clip: Passivated per QQ-P-35.

THREADSIZE

COUNTERBORE DEPTH

ASSEMBLY PART NUMBER

ASSEMBLY HEIGHT MAX.

B MAX.

C REF.

D DIA. MIN.

H MAX.

M

±0.005

M

1

±0.005

N REF.

.1900-32 UNJF-3B

0.070

FBL10050-31-( )( )( )( )

0.250

0.445

0.484

0.194

0.250

0.224

0.255

0.040

0.125

FBL10050-32-( )( )( )( )

0.312

0.188

FBL10050-33-( )( )( )( )

0.375

0.250

FBL10050-34-( )( )( )( )

0.438

0.313

FBL10050-35-( )( )( )( )

0.500

0.375

FBL10050-36-( )( )( )( )

0.562

.2500-28 UNJF-3B

0.070

FBL10050-41-( )( )( )( )

0.298

0.547

0.584

0.254

0.298

0.285

0.325

0.040

0.125

FBL10050-42-( )( )( )( )

0.360

0.188

FBL10050-43-( )( )( )( )

0.422

0.250

FBL10050-44-( )( )( )( )

0.484

0.313

FBL10050-45-( )( )( )( )

0.546

0.375

FBL10050-46-( )( )( )( )

0.608

.3125-24 UNJF-3B

0.070

FBL10050-51-( )( )( )( )

0.347

0.643

0.720

0.317

0.344

0.348

0.386

0.050

0.125

FBL10050-52-( )( )( )( )

0.403

0.188

FBL10050-53-( )( )( )( )

0.464

0.250

FBL10050-54-( )( )( )( )

0.527

0.313

FBL10050-55-( )( )( )( )

0.589

0.375

FBL10050-56-( )( )( )( )

0.652

*Note: “ARMCO 18-2MN” is a registered trademark of ARMCO Steel Corportaion, Middletown, Ohio.

Nut Spacing

For Three Thread Sizes (Use for 2nd dash number in assembly part number)

Notes:

  1. Threads per MIL-S-8879 except in locking area and prior to lubrication.
  2. Anti-seize compund per MIL-A-907 applied to internal thread.
  3. Float, minimum total; “V” = 0.030; “W” = 0.060. Nut shall be capable of engagement with a bolt in the maximum misaligned position.
  4. The assembly shall provide a bearing surface for the nut within the channel.
  5. Minimum Assembly Height is not specified, limited only by strength requirements.
  6. Shape within the envelope shown optional.
  7. Locking torque: The nut element of these assemblies shall be capable of 250 seated, usable cycles when tested per the requirements of CAL-STD-0232.

NUT SPACING

+0.010

NUMBER OF

NUTS

SECOND DASH NO. FOR THREAD SIZES:

.1900-32

.2500-28

.3125-24

0.625

2 TO 115

-5

0.750

2 TO 96

-6

-6

0.875

2 TO 82

-7

-7

1.000

2 TO 72

-8

-8

-8

1.125

2 TO 64

-9

-9

-9

1.250

2 TO 57

-10

-10

-10

1.375

2 TO 52

-11

-11

-11

1.500

2 TO 48

-12

-12

-12

1.750

2 TO 41

-14

-14

-14

2.000

2 TO 36

-16

-16

-16

2.250

2 TO 32

-18

-18

-18

2.500

2 TO 28

-20

-20

-20

3.000

2 TO 24

-24

-24

-24

NUT SPACING

+0.010

NUMBER OF

NUTS

SECOND DASH NO. FOR THREAD SIZES:

.1900-32

.2500-28

.3125-24

0.625

2 TO 115

-5

0.750

2 TO 96

-6

-6

0.875

2 TO 82

-7

-7

1.000

2 TO 72

-8

-8

-8

1.125

2 TO 64

-9

-9

-9

1.250

2 TO 57

-10

-10

-10

1.375

2 TO 52

-11

-11

-11

1.500

2 TO 48

-12

-12

-12

1.750

2 TO 41

-14

-14

-14

2.000

2 TO 36

-16

-16

-16

2.250

2 TO 32

-18

-18

-18

2.500

2 TO 28

-20

-20

-20

3.000

2 TO 24

-24

-24

-24

Part Number Callout Example:

image

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FBL10050 – ( )( ) – ( )( ) ( )( )

THREADSIZE

T

+0.030

-0.000

U

+0.030

-0.000

REPLACEMENT COMPONENTS

NUT ELEMENT

RETAINING CLIP

.1900-32 UNJF-3B

0.350

0.590

FBL10041-3-1

FBL10059-3R

FBL10041-3-2

FBL10041-3-3

FBL10041-3-4

FBL10041-3-5

FBL10041-3-6

.2500-28 UNJF-3B

0.400

0.640

FBL10041-4-1

FBL-10059-4R

FBL10041-4-2

FBL10041-4-3

FBL10041-4-4

FBL10041-4-5

FBL10041-4-6

.3125-24 UNJF-3B

0.450

0.720

FBL10041-5-1

FBL10059-5R

FBL10041-5-2

FBL10041-5-3

FBL10041-5-4

FBL10041-5-5

FBL10041-5-6

THREADSIZE

T

+0.030

-0.000

U

+0.030

-0.000

REPLACEMENT COMPONENTS

NUT ELEMENT

RETAINING CLIP

.1900-32 UNJF-3B

0.350

0.590

FBL10041-3-1

FBL10059-3R

FBL10041-3-2

FBL10041-3-3

FBL10041-3-4

FBL10041-3-5

FBL10041-3-6

.2500-28 UNJF-3B

0.400

0.640

FBL10041-4-1

FBL-10059-4R

FBL10041-4-2

FBL10041-4-3

FBL10041-4-4

FBL10041-4-5

FBL10041-4-6

.3125-24 UNJF-3B

0.450

0.720

FBL10041-5-1

FBL10059-5R

FBL10041-5-2

FBL10041-5-3

FBL10041-5-4

FBL10041-5-5

FBL10041-5-6

Number of Nuts.

(To be used only when less than the maximum number

of nuts shown in nut spacing table are required.) Prefix ‘0’ if less than ‘10.’ Example: FBL10050-( )( )-( )( )05.

Second Dash No. for nut spacing.

‘Dash’ signifies channel having cut-offs per dimension ‘T’ on both ends.

Insert letter ‘L’ in lieu of dash to signify a channel having cut-offs per dimension ‘U’ on both ends.

Insert letter ‘F’ in lieu of dash to signify a channel having cut-offs per dimension ‘T’ on on one end and cut-off per dimension ‘U’ on the opposite end.

Two digits shown as 1st dash number tabulated; first digit refers to thread size; second digit refers to counterbore depth.

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