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6B7637 — RETAINER,HELICAL COMPRESSION SPR

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

6B7637: RETAINER,HELICAL COMPRESSION SPR.

RETAINER,HELICAL COMPRESSION SPR. Key specifications include material: ALUMINUM ALLOY, overall_height: 1.880 INCHES NOMINAL IN, special_features: 7/8-14 UNF EXTERNAL THD ONE END, style_designator: IRREGULAR, end_hole_diameter: 1.120 INCHES NOMINAL IN, body_inside_diameter: 0.500 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-165-8889, 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
6B7637
NSN: 5340-00-165-8889
FSC: 5340 — Hardware, Commercial
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
materialALUMINUM ALLOY
overall_height1.880 INCHES NOMINAL IN
special_features7/8-14 UNF EXTERNAL THD ONE END
style_designatorIRREGULAR
end_hole_diameter1.120 INCHES NOMINAL IN
body_inside_diameter0.500 INCHES NOMINAL IN
body_outside_diameter1.365 INCHES NOMINAL IN
outside_chamfer_depth0.200 INCHES NOMINAL IN
casehardening_indicatorNOT CASEHARDENED
outside_chamfer_angle_in_deg45.0
NSN5340-00-165-8889
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6B7637 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
•
BODY OUTSIDE DIAMETER: 1.365 INCHES NOMINAL IN
•
STYLE DESIGNATOR: IRREGULAR
•
BODY INSIDE DIAMETER: 0.500 INCHES NOMINAL IN
•
OUTSIDE CHAMFER ANGLE IN DEG: 45.0
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
MATERIAL: ALUMINUM ALLOY
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.880 INCHES NOMINAL IN
BODY OUTSIDE DIAMETER1.365 INCHES NOMINAL IN
STYLE DESIGNATORIRREGULAR
BODY INSIDE DIAMETER0.500 INCHES NOMINAL IN
OUTSIDE CHAMFER ANGLE IN DEG45.0
CASEHARDENING INDICATORNOT CASEHARDENED
SPECIAL FEATURES7/8-14 UNF EXTERNAL THD ONE END
MATERIALALUMINUM ALLOY
OUTSIDE CHAMFER DEPTH0.200 INCHES NOMINAL IN
END HOLE DIAMETER1.120 INCHES NOMINAL 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
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 6B7637?
6B7637 is a RETAINER,HELICAL COMPRESSION SPR.
What is the NSN for 6B7637?
6B7637 is cataloged in the U.S. Government catalog under NSN 5340-00-165-8889. 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.