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A274 — COLLAR,BEARING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

A274: COLLAR,BEARING.

The COLLAR,BEARING is a the manufacturer industrial component. Key specifications include end_item_identification: DL1422M1-1, DL1422M1-2, DL1422M1-3, part_name_assigned_by_controlling_agency: BEARING ADAPTER. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-878-6530, 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
A274
NSN: 5340-00-878-6530
NIINs: 008786530, 014917327
FSC: 5340 — Hardware, Commercial
CAGE: 86928 — SEASTROM MANUFACTURING CO INC (USA)
SPECIFICATIONS
end_item_identificationDL1422M1-1, DL1422M1-2, DL1422M1-3
part_name_assigned_by_controlling_agencyBEARING ADAPTER
NSN5340-00-878-6530
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: A274 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
•
LENGTH: 0.310 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-C-533 FED SPEC ALL MATERIAL RESPONSES OVERALL
•
LOOP/HOLDING DIMENSION: 0.375 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.016 INCHES NOMINAL IN
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DISTANCE FROM LOOP CENTER TO END: 0.250 INCHES NOMINAL IN
•
SURFACE TREATMENT: OXIDE OVERALL
•
WIDTH: 0.380 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.440 INCHES NOMINAL IN
LENGTH0.310 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-C-533 FED SPEC ALL MATERIAL RESPONSES OVERALL
LOOP/HOLDING DIMENSION0.375 INCHES NOMINAL IN
MATERIAL THICKNESS0.016 INCHES NOMINAL IN
DISTANCE FROM LOOP CENTER TO END0.250 INCHES NOMINAL IN
SURFACE TREATMENTOXIDE OVERALL
WIDTH0.380 INCHES NOMINAL IN
MATERIALCOPPER ALLOY 170 OR COPPER ALLOY 172 OVERALL
HOLE DIAMETER0.096 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
711810-108Reference 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 A274?
A274 is a COLLAR,BEARING.
What parts can replace A274?
There is 1 known substitute for A274: 711810-108. Substitute compatibility should be verified for your specific system.
What is the NSN for A274?
A274 is cataloged in the U.S. Government catalog under NSN 5340-00-878-6530. 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.