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546638 — DISC,VALVE

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

546638: DISC,VALVE.

The DISC,VALVE is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 1610-00-876-4337, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
546638
NSN: 1610-00-876-4337
FSC: 1610 — Aircraft Propellers and Components
CAGE: 73030 — HAMILTON SUNDSTRAND CORPORATION DBA COLLINS AEROSPACE (USA)
SPECIFICATIONS
Part Number546638
NSN1610-00-876-4337
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available DISC,VALVE TITLE COMPONENT PN 546638 MFR DISC,VALVE
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: STEEL,MIL-S-7420,DIM.,0.160 IN. NOM OD,0.0655 IN. MIN,0.0700 IN. MAX ID0.057 IN. MIN,0.058 IN. MAX THICK,ID COUNTERBORED TO 0.093 IN. DIA BY 0.025IN. DEEP,MAX SURFACE FINISH,LEFT FACE 4 MICROINCHES RMS OR BETTER,RIGHT FACECOUNTERBORED SIDE,20 MICROINCHES AA,FACES PARALLEL WITHIN 0.001 TIR IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTEEL,MIL-S-7420,DIM.,0.160 IN. NOM OD,0.0655 IN. MIN,0.0700 IN. MAX ID0.057 IN. MIN,0.058 IN. MAX THICK,ID COUNTERBORED TO 0.093 IN. DIA BY 0.025IN. DEEP,MAX SURFACE FINISH,LEFT FACE 4 MICROINCHES RMS OR BETTER,RIGHT FACECOUNTERBORED SIDE,20 MICROINCHES AA,FACES PARALLEL WITHIN 0.001 TIR IN
OTHER ITEMS IN FSC 1610 — Aircraft Propellers and Components
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
1610-00-055-7633 1610-00-338-1172 1610-00-340-2824 1610-00-341-6998 1610-00-442-6856 1610-00-442-7349 1610-00-442-8108 1610-01-148-3369
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 546638?
546638 is a DISC,VALVE.
What is the NSN for 546638?
546638 is cataloged in the U.S. Government catalog under NSN 1610-00-876-4337. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.