4820-01-253-4637
Valve Seat
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Official Item Classification
- Name
- Valve Seat
- (NSN) National Stock Number
- 4820-01-253-4637
- (FSG) Federal Supply Group
- 48 Valves
- (FSC) Federal Supply Classification
- 4820 Nonpowered Valves
- (INC) Item Name Code
- 22113
- (FIIG) Federal Item Identification Guide
- A15500
- Date
- 04/18/1987 (39 years ago)
0.344 inches nominal single threaded portion thread length, 0.094 inches nominal flange seat to disk end height, 3a single threaded portion thread class, 0.672 inches nominal flange diameter, 0.594 inches nominal under flange height
Specs & Compatibility
3a single threaded portion
0.344 inches nominal single threaded portion
0.672 inches nominal
0.094 inches nominal
0.594 inches nominal
40.0 rockwell c minimum and 45.0 rockwell c maximum overall
0.500 inches single threaded portion
flat
0.201 inches nominal third step
0.313 inches nominal first step
0.316 inches nominal second step
0.375 in. across flats,0.156 in. lg hex wrenching feature flange end; four 0.062 in. dia holes 90 deg apart drilled thru body perpendicular to bore between thd portion and flange
steel comp 4140 overall
threaded flanged
unf single threaded portion
Regulatory Compliance
Item does not contain precious metal.
The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.
0022113