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4130 Steel Aerospace Flat Washers - Request for Information


4130 Steel:  is a molybdenum and chromium low alloy steel with properties that allow for easy hardening through heat treatment.   4130 steel provides notable structural strength and moderate heat resistance.


Aerospace:  deals with the development and manufacturing of products, structures, materials and devices used in aircrafts and spacecrafts.  Aerospace industrial standards are established based on the extreme temperature, pressure and ware exposure faced in air and spacecraft operations.  


Flat Washers:  primarily used with other hardware, such as nuts and bolts to distribute forces in the process of tightening.  Tightness is determined by pattern features such as nominal screw sizes, screw pitch thread, interior and exterior diameter ratios and height. 


Washers: circular hardware used for spacing, load distribution, sealing and vibration reduction.  Washers are produced through stamping and shaping a variety of materials including various metal, plastic, rubber and fiber.  

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TitlePart NumberQTY-OHDRAWINGOUTER DIAMINNER DIAMTHICK
N401P3 N401P3 27500.1830.0890.022
AN960-D1216L AN960-D1216L 1600REV 21 1.3120.7650.016
AN970-7 AN970-7 2820NASM970 REV 1 1.8120.4530.109
NAS1149D0863H NAS1149D0863H 10000REV 4 0.8750.5150.063
NAS1149FN816P NAS1149FN816P 481000REV 4 0.3750.1740.016
AN960-C3 AN960-C3 77800REV 21 0.2500.1050.032
NAS1149C2090R NAS1149C2090R 750REV 4 2.0001.2650.090
TitleOutside Dia.Inside Dia.Thickness
650-5259-0101.361.1870.01
650-4405-0040.7480.580.004
650-4633-1230.9370.6590.123
300-1086-0100.3710.2230.01
TitleOutside Dia.Inside Dia.ThicknessItem NameMaterial
460-295-0610.870.5170.061Special Flat Washers - High Carbon SteelHigh Carbon Steel
TitleOutside Dia. (min/max)Inside Dia. (min/max)Free Height (min/max)ThicknessMaterial
BB40-2750872.730/2.7501.375/1.3950.1730.087Stainless Steel - 410
CB10-370015.365/.375.190/.2000.0270.015Spring Steel

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