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Technical Data Sheet
PartsTable / COMPONENT / F21
F21 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The UNIVERSAL JOINT,AIRCRAFT is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, body_length: 5.062 INCHES NOMINAL IN, design_type: REUSABLE, mounting_type: INLET CONNECTION AND OUTLET CONNECTION LINE, alignment_type: RIGID, overall_height: 0.8125 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-240-3866, 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
F21
NSN: 5325-00-240-3866
FSC: 5325
CAGE: 02187 — COATS AND CLARK INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
body_length5.062 INCHES NOMINAL IN
design_typeREUSABLE
mounting_typeINLET CONNECTION AND OUTLET CONNECTION LINE
alignment_typeRIGID
overall_height0.8125 INCHES NOMINAL IN
surface_finishGROUND
style_designatorGROOVED RACE SURFACE
features_providedDRAIN PLUG
operating_pressure125.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LOCATION NOT OTHERWISE SPECIFIED LBS
body_outside_diameter2.250 INCHES NOMINAL IN
bore_smallest_diameter1.7500 INCHES NOMINAL IN
NSN5325-00-240-3866
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: F21 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: BLACK 7 IN. IN
TECHNICAL CHARACTERISTICS (FLIS)
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSBLACK 7 IN. IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
21F500Interchangeable
interchangeable cross-reference
interchangeable
F21Interchangeable
interchangeable cross-reference
interchangeable
74504723Interchangeable
interchangeable cross-reference
interchangeable
801933Interchangeable
interchangeable cross-reference
interchangeable
8410613Interchangeable
interchangeable cross-reference
interchangeable
GT-21Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is F21?
F21 is a UNIVERSAL JOINT,AIRCRAFT.
What parts can replace F21?
There are 6 known substitutes for F21: 21F500, F21, 74504723 and 3 more. Substitute compatibility should be verified for your specific system.
Is F21 still available?
F21 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026