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6531-21-218-9101 — CLEVIS,ROD END

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

6531-21-218-9101: CLEVIS,ROD END.

The CLEVIS,ROD END is a the manufacturer industrial component. Key specifications include material: STEEL COMP 630 OVERALL, thread_class: 3A ROD CONNECTION A, thread_direction: RIGHT-HAND ROD CONNECTION, nominal_thread_size: 0.312 INCHES ROD CONNECTION IN, thread_series_designator: UNIFIED NATIONAL JOINT FINE (UNJF) ROD CONNECTION, securing_pin_hole_diameter: 0.200 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5340-01-157-8751, 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
6531-21-218-9101
NSN: 5340-01-157-8751
FSC: 5340 — Hardware, Commercial
CAGE: 78286 — SIKORSKY AIRCRAFT CORPORATION DBA SIKORSKY AIRCRAFT CORP (USA)
SPECIFICATIONS
materialSTEEL COMP 630 OVERALL
thread_class3A ROD CONNECTION A
thread_directionRIGHT-HAND ROD CONNECTION
nominal_thread_size0.312 INCHES ROD CONNECTION IN
thread_series_designatorUNIFIED NATIONAL JOINT FINE (UNJF) ROD CONNECTION
securing_pin_hole_diameter0.200 INCHES NOMINAL IN
material_document_and_classificationAMS 5355 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5643,17-4PH ASSN STD SINGLE MATERIAL RESPONSE OVERALL
distance_from_center_of_securing_pin_hole_to_rod_end2.880 INCHES NOMINAL IN
NSN5340-01-157-8751
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 6531-21-218-9101 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
•
SECURING PIN HOLE DIAMETER: 0.200 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5355 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5643,17-4PH ASSN STD SINGLE MATERIAL RESPONSE OVERALL
•
THREAD DIRECTION: RIGHT-HAND ROD CONNECTION
•
NOMINAL THREAD SIZE: 0.312 INCHES ROD CONNECTION IN
•
THREAD CLASS: 3A ROD CONNECTION A
•
MATERIAL: STEEL COMP 630 OVERALL
•
DISTANCE FROM CENTER OF SECURING PIN HOLE TO ROD END: 2.880 INCHES NOMINAL IN
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL JOINT FINE (UNJF) ROD CONNECTION
TECHNICAL CHARACTERISTICS
SECURING PIN HOLE DIAMETER0.200 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5355 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5643,17-4PH ASSN STD SINGLE MATERIAL RESPONSE OVERALL
THREAD DIRECTIONRIGHT-HAND ROD CONNECTION
NOMINAL THREAD SIZE0.312 INCHES ROD CONNECTION IN
THREAD CLASS3A ROD CONNECTION A
MATERIALSTEEL COMP 630 OVERALL
DISTANCE FROM CENTER OF SECURING PIN HOLE TO ROD END2.880 INCHES NOMINAL IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL JOINT FINE (UNJF) ROD CONNECTION
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
65312-12189Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 6531-21-218-9101?
6531-21-218-9101 is a CLEVIS,ROD END.
What parts can replace 6531-21-218-9101?
There is 1 known substitute for 6531-21-218-9101: 65312-12189. Substitute compatibility should be verified for your specific system.
What is the NSN for 6531-21-218-9101?
6531-21-218-9101 is cataloged in the U.S. Government catalog under NSN 5340-01-157-8751. 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.