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10112720 — RETAINER,HELICAL COMPRESSION SPR

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

10112720: RETAINER,HELICAL COMPRESSION SPR.

RETAINER,HELICAL COMPRESSION SPR. Key specifications include material: ALUMINUM ALLOY 7075, overall_height: 1.750 INCHES NOMINAL IN, style_designator: IRREGULAR, body_inside_diameter: 0.563 INCHES NOMINAL IN, fsc_application_data: AIRCRAFT LANDING GEAR, body_outside_diameter: 0.645 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-140-3703, 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
10112720
NSN: 5340-01-140-3703
FSC: 5340 — Hardware, Commercial
CAGE: A486G — NIMIKKEISTOKESKUS NCB FINLAND (FIN)
SPECIFICATIONS
materialALUMINUM ALLOY 7075
overall_height1.750 INCHES NOMINAL IN
style_designatorIRREGULAR
body_inside_diameter0.563 INCHES NOMINAL IN
fsc_application_dataAIRCRAFT LANDING GEAR
body_outside_diameter0.645 INCHES NOMINAL IN
mounting_hole_diameter0.125 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
material_document_and_classificationQQ-A-225/9, ALLOY 7075, T7351 FED SPEC SINGLE MATERIAL RESPONSE
NSN5340-01-140-3703
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 10112720 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
•
FSC APPLICATION DATA: AIRCRAFT LANDING GEAR
•
BODY OUTSIDE DIAMETER: 0.645 INCHES NOMINAL IN
•
STYLE DESIGNATOR: IRREGULAR
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-225/9, ALLOY 7075, T7351 FED SPEC SINGLE MATERIAL RESPONSE
•
MOUNTING HOLE DIAMETER: 0.125 INCHES NOMINAL IN
•
BODY INSIDE DIAMETER: 0.563 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.750 INCHES NOMINAL IN
FSC APPLICATION DATAAIRCRAFT LANDING GEAR
BODY OUTSIDE DIAMETER0.645 INCHES NOMINAL IN
STYLE DESIGNATORIRREGULAR
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-225/9, ALLOY 7075, T7351 FED SPEC SINGLE MATERIAL RESPONSE
MOUNTING HOLE DIAMETER0.125 INCHES NOMINAL IN
BODY INSIDE DIAMETER0.563 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
MATERIALALUMINUM ALLOY 7075
OTHER ITEMS IN FSC 5340 — Hardware, Commercial
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5340-00-000-0068 5340-00-000-0132 5340-00-000-8150 5340-00-001-1251 5340-00-001-1264 5340-00-001-1265 5340-00-001-1266 5340-00-001-1275
SUBSTITUTES & CROSS-REFERENCES 2
74A425040-2001Reference document
Same NSN cross-reference
Reference document — Secondary reference
74A425040-2003Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 10112720?
10112720 is a RETAINER,HELICAL COMPRESSION SPR.
What parts can replace 10112720?
There are 2 known substitutes for 10112720: 74A425040-2001, 74A425040-2003. Substitute compatibility should be verified for your specific system.
What is the NSN for 10112720?
10112720 is cataloged in the U.S. Government catalog under NSN 5340-01-140-3703. 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.