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7979610 — RETAINER,HELICAL COMPRESSION SPR

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

7979610: RETAINER,HELICAL COMPRESSION SPR.

RETAINER,HELICAL COMPRESSION SPR. Key specifications include material: STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 OR STEEL, flange_diameter: 3.250 INCHES NOMINAL IN, flange_thickness: 0.188 INCHES NOMINAL IN, end_hole_diameter: 0.511 INCHES MINIMUM AND 0.521 INCHES MAXIMUM IN, surface_treatment: CADMIUM OR CADMIUM AND CHROMATE OR CADMIUM AND PHOSPHATE AND ZINC OR ZINC AND CHROMATE OR ZINC AND PHOSPHATE, body_inside_diameter: 2.750 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-178-1441, 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
7979610
NSN: 5340-00-178-1441
FSC: 5340 — Hardware, Commercial
CAGE: 19207 — U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM (USA)
SPECIFICATIONS
materialSTEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 OR STEEL
flange_diameter3.250 INCHES NOMINAL IN
flange_thickness0.188 INCHES NOMINAL IN
end_hole_diameter0.511 INCHES MINIMUM AND 0.521 INCHES MAXIMUM IN
surface_treatmentCADMIUM OR CADMIUM AND CHROMATE OR CADMIUM AND PHOSPHATE AND ZINC OR ZINC AND CHROMATE OR ZINC AND PHOSPHATE
body_inside_diameter2.750 INCHES NOMINAL IN
body_outside_diameter2.868 INCHES NOMINAL IN
material_document_and_classificationQQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE
surface_treatment_document_and_classificationQQ-P-416 FED SPEC 1ST TREATMENT RESPONSE AND QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE
NSN5340-00-178-1441
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 7979610 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
•
FLANGE DIAMETER: 3.250 INCHES NOMINAL IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416 FED SPEC 1ST TREATMENT RESPONSE AND QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE
•
FLANGE THICKNESS: 0.188 INCHES NOMINAL IN
•
BODY OUTSIDE DIAMETER: 2.868 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE
•
BODY INSIDE DIAMETER: 2.750 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM OR CADMIUM AND CHROMATE OR CADMIUM AND PHOSPHATE AND ZINC OR ZINC AND CHROMATE OR ZINC AND PHOSPHATE
•
MATERIAL: STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 OR STEEL
TECHNICAL CHARACTERISTICS
FLANGE DIAMETER3.250 INCHES NOMINAL IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416 FED SPEC 1ST TREATMENT RESPONSE AND QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE
FLANGE THICKNESS0.188 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER2.868 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-698 FED SPEC SINGLE MATERIAL RESPONSE
BODY INSIDE DIAMETER2.750 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OR CADMIUM AND CHROMATE OR CADMIUM AND PHOSPHATE AND ZINC OR ZINC AND CHROMATE OR ZINC AND PHOSPHATE
MATERIALSTEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1015 OR STEEL COMP 1018 OR STEEL COMP 1020 OR STEEL
END HOLE DIAMETER0.511 INCHES MINIMUM AND 0.521 INCHES MAXIMUM IN
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

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 7979610?
7979610 is a RETAINER,HELICAL COMPRESSION SPR.
What is the NSN for 7979610?
7979610 is cataloged in the U.S. Government catalog under NSN 5340-00-178-1441. 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.