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PartsTable / COMPONENT / A975S
A975S ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The VALVE,POPPET,ENGINE is a the manufacturer industrial component. Key specifications include material: STEEL COMP 8640 STEM, head_style: MUSHROOM, stem_style: GROOVED, head_height: 0.1719 INCHES NOMINAL IN, neck_radius: 0.2187 INCHES NOMINAL IN, stem_length: 3.7969 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2805-00-351-6344, 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
A975S
NSN: 2805-00-351-6344
FSC: 2805
CAGE: 77576 — STERLING DIV FEDERAL MOGUL CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 8640 STEM
head_styleMUSHROOM
stem_styleGROOVED
head_height0.1719 INCHES NOMINAL IN
neck_radius0.2187 INCHES NOMINAL IN
stem_length3.7969 INCHES NOMINAL IN
groove_width0.2656 INCHES NOMINAL IN
stem_diameter0.3100 INCHES NOMINAL IN
chamfer_length0.0469 INCHES NOMINAL IN
groove_diameter0.2500 INCHES NOMINAL IN
outside_diameter1.1250 INCHES NOMINAL IN
seat_angle_in_deg45.0
NSN2805-00-351-6344
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available VALVE,POPPET,ENGINE TITLE COMPONENT PN A975S MFR VALVE,POPPET,ENGINE
KEY FEATURES
•
STEM LENGTH: 3.7969 INCHES NOMINAL IN
•
STEM DIAMETER: 0.3100 INCHES NOMINAL IN
•
GROOVE DIAMETER: 0.2500 INCHES NOMINAL IN
•
SEAT ANGLE IN DEG: 45.0
•
MATERIAL: COBALT ALLOY TIP
•
FSC APPLICATION DATA: GASOLINE ENGINE
•
HEAD STYLE: MUSHROOM
•
GROOVE WIDTH: 0.2656 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
STEM LENGTH3.7969 INCHES NOMINAL IN
STEM DIAMETER0.3100 INCHES NOMINAL IN
GROOVE DIAMETER0.2500 INCHES NOMINAL IN
SEAT ANGLE IN DEG45.0
MATERIALCOBALT ALLOY TIP
FSC APPLICATION DATAGASOLINE ENGINE
HEAD STYLEMUSHROOM
GROOVE WIDTH0.2656 INCHES NOMINAL IN
NECK RADIUS0.2187 INCHES NOMINAL IN
HEAD HEIGHT0.1719 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
2652-1Interchangeable
interchangeable cross-reference
interchangeable
815-1853067SYM2652-1Interchangeable
interchangeable cross-reference
interchangeable
2652.1Interchangeable
interchangeable cross-reference
interchangeable
400 6537780 REV-ITEM 9Interchangeable
interchangeable cross-reference
interchangeable
633400-7Interchangeable
interchangeable cross-reference
interchangeable
9-253-51Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A975S?
A975S is a VALVE,POPPET,ENGINE.
What parts can replace A975S?
There are 12 known substitutes for A975S: 2652-1, 815-1853067SYM2652-1, 2652.1 and 9 more. Substitute compatibility should be verified for your specific system.
Is A975S still available?
A975S is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026