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4130 Steel Milspec Special 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.


Milspec: Military standards are most often defined by an efficient operation and substantial longevity in inhospitable or rugged conditions and environments.  


Special Washers: are any washers defined by non-standard qualities and non-circular interiors and exterior shaping.  Special washers include washers customized through materials, diameter measurements and ratios, height (thickness) and form.


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
AN960-KD1816L AN960-KD1816L 0REV 21 1.8751.1400.016
AN960-D8 AN960-D8 83770REV 21 0.3750.1740.032
N401P41C13 N401P41C13 12400.7400.2710.056
NAS1149D0332J NAS1149D0332J 37000REV 4 0.4380.2030.032
NAS1149D0432J NAS1149D0432J 39400REV 4 0.5000.2650.032
NAS620B8L NAS620B8L 0REV 7 0.3040.1690.016
N401P34E N401P34E 50000.3070.1040.028
TitleOutside Dia. (min/max)Inside Dia. (min/max)Free Height (min/max)ThicknessMaterial
CB3-302012.300/.305.109/.112.050/.060.012Spring Steel
TitleSizeOutside Dia. (min/max)Inside Dia. (min/max)ThicknessFree Height (min/max)Material
AT2-1860082.181/.191.090/.1000.008.030/.040Stainless Steel
TitleOutside Dia.Inside Dia.Thickness
440-203-0621.50.50.062
650-5390-03021.510.03
300-969-0480.3930.2060.048
300-1392-0410.3920.2680.041
300-3100-0301.6221.2510.03

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