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Aerospace Fittings

The standard fitting material is CRES. Titanium is also available for weight savings.
Airframe

R154 (370 Series) Straight Flared Fittings

R154 (370 Series) Fittings
Hose Size Part Number Nut Thread Size
(T)
Nut Engagement Length
(A)
Reach Max
(B)
Nut Size
(C)
Collar Hex Size
(D)
Drop
(E)
Weight
(Grams) CRES
4 Y40004-42 .4375-20 9.4 35.2 14.3 22.2 NA 31.5
6 Y40006-42 .5625-18 9.5 37.1 17.5 25.4 NA 54
8 Y40008-42 .7500-16 11.1 46 22.2 30.5 NA 93.5
10 Y40010-42 .8750-14 13.1 57.7 25.4 35.7 NA 147
12 Y40012-42 1.0625-12 14.3 58.9 31.8 42.8 NA 225
16 Y40016-42 1.3125-12 15.7 66.3 38.1 50.8 NA 336
20 Y40020-42 1.6250-12 15.7 80 46 54 NA 315

R154 (370 Series) 45° Elbow Flared Fittings

R154 (370 Series) Fittings
Hose Size Part Number Nut Thread Size
(T)
Nut Engagement Length
(A)
Reach Max
(B)
Nut Size
(C)
Collar Hex Size
(D)
Drop
(E)
Weight
(Grams) CRES
4 Y40104-42 .4375-20 9.4 47.6 14.3 22.2 8.800000000000001 36
6 Y40106-42 .5625-18 9.5 52.2 17.5 25.4 12 61
8 Y40108-42 .7500-16 11.1 64.09999999999999 22.2 30.5 14.5 103
10 Y40110-42 .8750-14 13.1 81.3 25.4 35.7 16.3 164
12 Y40112-42 1.0625-12 14.3 87.59999999999999 31.8 42.8 17.3 246

R154 (370 Series) 90° Elbow Flared Fittings

R154 (370 Series) Fittings
Hose Size Part Number Nut Thread Size
(T)
Nut Engagement Length
(A)
Reach Max
(B)
Nut Size
(C)
Collar Hex Size
(D)
Drop
(E)
Weight
(Grams) CRES
4 Y40204-42 .4375-20 9.4 41.7 14.3 22.2 16.3 36
6 Y40206-42 .5625-18 9.5 45.5 17.5 25.4 22.6 63
8 Y40208-42 .7500-16 11.1 56.4 22.2 30.5 28.1 107
10 Y40210-42 .8750-14 13.1 73.7 25.4 35.7 32.5 171.5
12 Y40212-42 1.0625-12 14.3 79.59999999999999 31.8 42.8 35.7 262

R154 (370 Series) Straight Flared Fittings

R154 (370 Series) Fittings
Hose Size Part Number Nut Thread Size
(T)
Nut Engagement Length
(A)
Reach Max
(B)
Nut Size
(C)
Collar Hex Size
(D)
Drop
(E)
Weight
(LB) CRES
4 Y40004-42 .4375-20 0.372 1.385 0.5620000000000001 0.875 NA 0.1
6 Y40006-42 .5625-18 0.375 1.46 0.6879999999999999 1 NA 0.1
8 Y40008-42 .7500-16 0.438 1.81 0.875 1.2 NA 0.2
10 Y40010-42 .8750-14 0.515 2.27 1 1.406 NA 0.3
12 Y40012-42 1.0625-12 0.5620000000000001 2.32 1.25 1.687 NA 0.5
16 Y40016-42 1.3125-12 0.62 2.61 1.5 2 NA 0.7
20 Y40020-42 1.6250-12 0.62 3.15 1.812 2.125 NA 1.4

R154 (370 Series) 45° Elbow Flared Fittings

R154 (370 Series) Fittings
Hose Size Part Number Nut Thread Size
(T)
Nut Engagement Length
(A)
Reach Max
(B)
Nut Size
(C)
Collar Hex Size
(D)
Drop
(E)
Weight
(LB) CRES
4 Y40104-42 .4375-20 0.372 1.875 0.5620000000000001 0.875 0.348 0.1
6 Y40106-42 .5625-18 0.375 2.055 0.6879999999999999 1 0.471 0.1
8 Y40108-42 .7500-16 0.438 2.525 0.875 1.2 0.572 0.2
10 Y40110-42 .8750-14 0.515 3.2 1 1.406 0.643 0.3
12 Y40112-42 1.0625-12 0.5620000000000001 3.45 1.25 1.687 0.68 0.5

R154 (370 Series) 90° Elbow Flared Fittings

R154 (370 Series) Fittings
Hose Size Part Number Nut Thread Size
(T)
Nut Engagement Length
(A)
Reach Max
(B)
Nut Size
(C)
Collar Hex Size
(D)
Drop
(E)
Weight
(LB) CRES
4 Y40204-42 .4375-20 0.372 1.64 0.5620000000000001 0.875 0.642 0.1
6 Y40206-42 .5625-18 0.375 1.79 0.6879999999999999 1 0.89 0.1
8 Y40208-42 .7500-16 0.438 2.22 0.875 1.2 1.107 0.2
10 Y40210-42 .8750-14 0.515 2.9 1 1.406 1.281 0.4
12 Y40212-42 1.0625-12 0.5620000000000001 3.135 1.25 1.687 1.405 0.6

R154 (370 Series) Straight Flareless Fittings

R154 (370 Series) Fittings
Hose Size Part Number Nut Thread Size
(T)
Nut Engagement Length
(A)
Reach Max
(B)
Nut Size
(C)
Collar Hex Size
(D)
Drop
(E)
Gage Point
(F)
Weight
(LB) CRES
4 Y40404-64 .4375-20 0.32 1.43 0.5620000000000001 0.62 NA 0.155 0.1
6 Y40406-64 .5625-18 0.327 1.51 0.6879999999999999 0.82 NA 0.164 0.1
8 Y40408-64 .7500-16 0.368 1.89 0.875 0.93 NA 0.189 0.2
10 Y40410-64 .8750-14 0.396 2.37 1 1.18 NA 0.201 0.3
12 Y40412-64 1.0625-12 0.421 2.435 1.25 1.5 NA 0.228 0.5
16 Y40416-64 1.3125-12 0.425 2.78 1.5 1.71 NA 0.297 0.8
20 Y40420-64 1.6250-12 0.452 3.315 1.812 2.2 NA 0.3 1.4

R154 (370 Series) 45° Elbow Flareless Fittings

R154 (370 Series) Fittings
Hose Size Part Number Nut Thread Size
(T)
Nut Engagement Length
(A)
Reach Max
(B)
Nut Size
(C)
Collar Hex Size
(D)
Drop
(E)
Gage Point
(F)
Weight
(LB) CRES
4 Y40504-64 .4375-20 0.32 2.06 0.5620000000000001 0.62 0.418 0.11 0.1
6 Y40506-64 .5625-18 0.327 2.3 0.6879999999999999 0.82 0.544 0.116 0.1
8 Y40508-64 .7500-16 0.368 2.715 0.875 0.93 0.601 0.134 0.2
10 Y40510-64 .8750-14 0.396 3.34 1 1.18 0.736 0.142 0.8
12 Y40512-64 1.0625-12 0.421 3.6 1.25 1.5 0.735 0.161 0.6

R154 (370 Series) 90° Elbow Flareless Fittings

R154 (370 Series) Fittings
Hose Size Part Number Nut Thread Size
(T)
Nut Engagement Length
(A)
Reach Max
(B)
Nut Size
(C)
Collar Hex Size
(D)
Drop
(E)
Gage Point
(F)
Weight
(LB) CRES
4 Y40604-64 .4375-20 0.32 1.765 0.5620000000000001 0.62 0.744 0.155 0.1
6 Y40606-64 .5625-18 0.327 2.005 0.6879999999999999 0.82 0.995 0.164 0.1
8 Y40608-64 .7500-16 0.368 2.41 0.875 0.93 1.148 0.189 0.2
10 Y40610-64 .8750-14 0.396 3.01 1 1.18 1.411 0.201 0.4
12 Y40612-64 1.0625-12 0.421 3.325 1.25 1.5 1.485 0.228 0.6

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