Model: 3921

Exhaust Valve

Properties:

General Description
Steel, aes-w, head dia, 1.565 in. Min, 1.575 in. Max, o/a lg, 3.697 in. Min, 3.710 in. Max, gage dia, 1.474 in. Max, stem id, 0.433 in. Min, 0.434 in. Max, stem must be straight and ground concentric with valve seat within 0.002 in. Total indicator reading, button sae 3140, harden tip to obtain scleroscope hardness of 65 min, stem end 0.812 in. Lg, 0.341 in. Min, 0.342 in. Max, od, 0.298 in. Min, 0.304 in. Max id
NSN
2810-00-478-8654
Part Number
3921
Description
Valve,exhaust
CAGE
28839

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

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