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SAE J891 (Figure 7):2016 U-Type Spring Nut

SAE J891 (Figure 7):2016 U-Type Spring Nut uses a U-shaped clip structure that can be mounted on panel edges or openings to provide a pre-positioned thread for screws. Its simple installation method is suitable for sheet-metal connections requiring quick positioning and removable maintenance.

This product is widely used in automotive parts, appliance housings, chassis cabinets, trim components, and light brackets. The U-type spring form holds position before assembly, reducing problems with dropped nuts or difficult hole alignment.

It can be selected according to panel thickness range, thread size, and coating requirements to support assembly efficiency and corrosion reliability in volume production.

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Dimensions unit: inch

Specification 3.5 3.5 3.5 3.5 3.5 3.5 3.5 3.5 4.2 4.2 4.2 4.2 4.2 4.2 4.2 4.2
#6(inch) Short  #6(inch) Short  #6(inch) Long #6(inch) Long #6(inch) Short  #6(inch) Short  #6(inch) Long #6(inch) Long #8(inch) Short  #8(inch) Short  #8(inch) Long #8(inch) Long #8(inch) Short  #8(inch) Short  #8(inch) Long #8(inch) Long
Plate thickness (mm) 0.64 0.64 3.66 3.66 3.18 3.18 6.35 6.35 0.64 0.64 3.66 3.66 3.18 3.18 6.35 6.35
(inch) 0.025 0.025 0.15 0.15 0.125 0.125 0.25 0.25 0.025 0.025 0.15 0.15 0.125 0.125 0.25 0.25
A (mm) Nominal 19.56 19.56 25.4 25.4 19.56 19.56 25.4 25.4 19.56 19.56 25.4 25.4 19.56 19.56 25.4 25.4
Max. 19.94 19.94 25.78 25.78 19.94 19.94 25.78 25.78 19.94 19.94 25.78 25.78 19.94 19.94 25.78 25.78
Min. 18.8 18.8 24.64 24.64 18.8 18.8 24.64 24.64 18.8 18.8 24.64 24.64 18.8 18.8 24.64 24.64
(inch) Nominal 0.77 0.77 1 1 0.77 0.77 1 1 0.77 0.77 1 1 0.77 0.77 1 1
Max. 0.785 0.785 1.015 1.015 0.785 0.785 1.015 1.015 0.785 0.785 1.015 1.015 0.785 0.785 1.015 1.015
Min. 0.74 0.74 0.97 0.97 0.74 0.74 0.97 0.97 0.74 0.74 0.97 0.97 0.74 0.74 0.97 0.97
B (mm) Nominal 13.58 13.58 13.58 13.58 13.58 13.58 13.58 13.58 13.58 13.58 13.58 13.58 13.58 13.58 13.58 13.58
Max. 13.96 13.96 13.96 13.96 13.96 13.96 13.96 13.96 13.96 13.96 13.96 13.96 13.96 13.96 13.96 13.96
Min. 13.2 13.2 13.2 13.2 13.2 13.2 13.2 13.2 13.2 13.2 13.2 13.2 13.2 13.2 13.2 13.2
(inch) Nominal 0.535 0.535 0.535 0.535 0.535 0.535 0.535 0.535 0.535 0.535 0.535 0.535 0.535 0.535 0.535 0.535
Max. 0.55 0.55 0.55 0.55 0.55 0.55 0.55 0.55 0.55 0.55 0.55 0.55 0.55 0.55 0.55 0.55
Min. 0.52 0.52 0.52 0.52 0.52 0.52 0.52 0.52 0.52 0.52 0.52 0.52 0.52 0.52 0.52 0.52
D (mm) 8.64 9.14 14.48 15.24 8.64 9.14 14.48 15.24 8.64 9.14 14.48 15.24 8.64 9.14 14.48 15.24
(inch) 0.34 0.36 0.57 0.6 0.34 0.36 0.57 0.6 0.34 0.36 0.57 0.6 0.34 0.36 0.57 0.6
E (mm) 0.46 0.46 0.68 0.68 0.46 0.46 0.68 0.68 0.58 0.58 0.76 0.76 0.58 0.58 0.76 0.76
(inch) 0.018 0.018 0.027 0.027 0.018 0.018 0.027 0.027 0.023 0.023 0.03 0.03 0.023 0.023 0.03 0.03
M (mm) 3.81 3.81 4.04 4.04 6.6 6.6 7.11 7.11 3.81 3.81 4.04 4.04 6.6 6.6 7.11 7.11
(inch) 0.15 0.15 0.19 0.19 0.26 0.26 0.28 0.28 0.15 0.15 0.19 0.19 0.26 0.26 0.28 0.28

  

Specification 4.8 4.8 4.8 4.8 4.8 4.8 4.8 4.8 6.3 6.3 6.3 6.3 6.3 6.3 6.3 6.3
#10(inch) Short  #10(inch) Short  #10(inch) Long #10(inch) Long #10(inch) Short  #10(inch) Short  #10(inch) Long #10(inch) Long 1/4(inch) Short  1/4(inch) Short  1/4(inch) Long 1/4(inch) Long 1/4(inch) Short  1/4(inch) Short  1/4(inch) Long 1/4(inch) Long
Plate thickness (mm) 0.64 0.64 3.66 3.66 3.18 3.18 6.35 6.35 0.64 0.64 3.66 3.66 3.18 3.18 6.35 6.35
(inch) 0.025 0.025 0.15 0.15 0.125 0.125 0.25 0.25 0.025 0.025 0.15 0.15 0.125 0.125 0.25 0.25
A (mm) Nominal 19.56 19.56 25.4 25.4 19.56 19.56 25.4 25.4 19.56 19.56 25.4 25.4 19.56 19.56 25.4 25.4
Max. 19.94 19.94 25.78 25.78 19.94 19.94 25.78 25.78 19.94 19.94 25.78 25.78 19.94 19.94 25.78 25.78
Min. 18.8 18.8 24.64 24.64 18.8 18.8 24.64 24.64 18.8 18.8 24.64 24.64 18.8 18.8 24.64 24.64
(inch) Nominal 0.77 0.77 1 1 0.77 0.77 1 1 0.77 0.77 1 1 0.77 0.77 1 1
Max. 0.785 0.785 1.015 1.015 0.785 0.785 1.015 1.015 0.785 0.785 1.015 1.015 0.785 0.785 1.015 1.015
Min. 0.74 0.74 0.97 0.97 0.74 0.74 0.97 0.97 0.74 0.74 0.97 0.97 0.74 0.74 0.97 0.97
B (mm) Nominal 16.12 16.12 16.12 16.12 16.12 16.12 16.12 16.12 16.12 16.12 16.12 16.12 16.12 16.12 16.12 16.12
Max. 16.5 16.5 16.5 16.5 16.5 16.5 16.5 16.5 16.5 16.5 16.5 16.5 16.5 16.5 16.5 16.5
Min. 15.74 15.74 15.74 15.74 15.74 15.74 15.74 15.74 15.74 15.74 15.74 15.74 15.74 15.74 15.74 15.74
(inch) Nominal 0.635 0.635 0.635 0.635 0.635 0.635 0.635 0.635 0.635 0.635 0.635 0.635 0.635 0.635 0.635 0.635
Max. 0.65 0.65 0.65 0.65 0.65 0.65 0.65 0.65 0.65 0.65 0.65 0.65 0.65 0.65 0.65 0.65
Min. 0.62 0.62 0.62 0.62 0.62 0.62 0.62 0.62 0.62 0.62 0.62 0.62 0.62 0.62 0.62 0.62
D (mm) 8.64 9.14 14.48 15.24 8.64 9.14 14.48 15.24 8.64 9.14 14.48 15.24 8.64 9.14 14.48 15.24
(inch) 0.34 0.36 0.57 0.6 0.34 0.36 0.57 0.6 0.34 0.36 0.57 0.6 0.34 0.36 0.57 0.6
E (mm) 0.71 0.71 0.88 0.88 0.71 0.71 0.88 0.88 0.84 0.84 0.99 0.99 0.84 0.84 0.99 0.99
(inch) 0.028 0.028 0.035 0.035 0.028 0.028 0.035 0.035 0.033 0.033 0.039 0.039 0.033 0.033 0.039 0.039
M (mm) 3.81 3.81 4.04 4.04 6.6 6.6 7.11 7.11 3.81 3.81 4.04 4.04 6.6 6.6 7.11 7.11
(inch) 0.15 0.15 0.19 0.19 0.26 0.26 0.28 0.28 0.15 0.15 0.19 0.19 0.26 0.26 0.28 0.28

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NEWS

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