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6438K23 — COLLAR,SHAFT

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

6438K23: COLLAR,SHAFT.

The COLLAR,SHAFT is a the manufacturer industrial component. Key specifications include material: STEEL, outside_diameter: 1.310 INCHES NOMINAL IN, supplementary_features: 0.625-11 THREADED, end_item_identification: 6625-01-624-4285, part_name_assigned_by_controlling_agency: SHAFT COLLAR. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-664-0643, 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
6438K23
NSN: 5340-01-664-0643
FSC: 5340 — Hardware, Commercial
CAGE: 0KVE6 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL
outside_diameter1.310 INCHES NOMINAL IN
supplementary_features0.625-11 THREADED
end_item_identification6625-01-624-4285
part_name_assigned_by_controlling_agencySHAFT COLLAR
NSN5340-01-664-0643
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6438K23 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
•
SUPPLEMENTARY FEATURES: 0.625-11 THREADED
•
OUTSIDE DIAMETER: 1.310 INCHES NOMINAL IN
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
SUPPLEMENTARY FEATURES0.625-11 THREADED
OUTSIDE DIAMETER1.310 INCHES NOMINAL IN
PART NAME ASSIGNED BY CONTROLLING AGENCYSHAFT COLLAR
END ITEM IDENTIFICATION6625-01-624-4285
MATERIALSTEEL
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 1
13003C0009Reference document
Same NSN cross-reference
Reference document — Vendor item drawing 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 6438K23?
6438K23 is a COLLAR,SHAFT.
What parts can replace 6438K23?
There is 1 known substitute for 6438K23: 13003C0009. Substitute compatibility should be verified for your specific system.
What is the NSN for 6438K23?
6438K23 is cataloged in the U.S. Government catalog under NSN 5340-01-664-0643. 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.