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A-310738 — CIRCUIT CARD ASSEMBLY

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

A-310738: CIRCUIT CARD ASSEMBLY.

The CIRCUIT CARD ASSEMBLY is a the manufacturer industrial component. Key specifications include height: 1.875 INCHES NOMINAL IN, material: COTTON INTERMEDIATE RING, inside_diameter: 7.500 INCHES NOMINAL IN, outside_diameter: 8.500 INCHES NOMINAL IN, end_item_identification: RADIO SET CONTROL GROUP,AN/GRA- 39, cross-sectional_shape_style: U INTERMEDIATE RING. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-256-6913, 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
A-310738
NSN: 5330-00-256-6913
NIINs: 002566913, 013579872
FSC: 5330 — Packing and Gasket Materials
CAGE: 3X894 — CONTROL FLOW, INC. DBA CONTROL FLOW INC (USA)
SPECIFICATIONS
height1.875 INCHES NOMINAL IN
materialCOTTON INTERMEDIATE RING
inside_diameter7.500 INCHES NOMINAL IN
outside_diameter8.500 INCHES NOMINAL IN
end_item_identificationRADIO SET CONTROL GROUP,AN/GRA- 39
intermediate_ring_quantity3
cross-sectional_shape_styleU INTERMEDIATE RING
NSN5330-00-256-6913
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A-310738 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
INTERMEDIATE RING QUANTITY: 3
•
OUTSIDE DIAMETER: 8.500 INCHES NOMINAL IN
•
CROSS-SECTIONAL SHAPE STYLE: U INTERMEDIATE RING
•
INSIDE DIAMETER: 7.500 INCHES NOMINAL IN
•
HEIGHT: 1.875 INCHES NOMINAL IN
•
MATERIAL: COTTON INTERMEDIATE RING
TECHNICAL CHARACTERISTICS
INTERMEDIATE RING QUANTITY3
OUTSIDE DIAMETER8.500 INCHES NOMINAL IN
CROSS-SECTIONAL SHAPE STYLEU INTERMEDIATE RING
CROSS-SECTIONAL SHAPE STYLEANGLE BOTTOM RING
INSIDE DIAMETER7.500 INCHES NOMINAL IN
HEIGHT1.875 INCHES NOMINAL IN
MATERIALCOTTON INTERMEDIATE RING
MATERIALCOTTON BOTTOM RING
MATERIALCOTTON TOP RING
SUBSTITUTES & CROSS-REFERENCES 1
295015D1200PC28Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 A-310738?
A-310738 is a CIRCUIT CARD ASSEMBLY.
What parts can replace A-310738?
There is 1 known substitute for A-310738: 295015D1200PC28. Substitute compatibility should be verified for your specific system.
What is the NSN for A-310738?
A-310738 is cataloged in the U.S. Government catalog under NSN 5330-00-256-6913. This indicates validated use in U.S. government and defense supply chains.
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