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FON20-7524-17 — STUD ASSEMBLY,TURNLOCK FASTENER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

FON20-7524-17: STUD ASSEMBLY,TURNLOCK FASTENER.

STUD ASSEMBLY,TURNLOCK FASTENER. Key specifications include diameter: 0.250 INCHES NOMINAL IN, material: STEEL OVERALL, drive_type: SLOTTED, eyelet_length: 0.328 INCHES NOMINAL IN, stud_head_height: 0.073 INCHES NOMINAL IN, surface_treatment: PASSIVATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5325-00-778-7724, 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
FON20-7524-17
NSN: 5325-00-778-7724
FSC: 5325 — Fastening Devices
CAGE: H1822 — GKN FOKKER AEROSPACE B.V. (NLD)
SPECIFICATIONS
diameter0.250 INCHES NOMINAL IN
materialSTEEL OVERALL
drive_typeSLOTTED
eyelet_length0.328 INCHES NOMINAL IN
stud_head_height0.073 INCHES NOMINAL IN
surface_treatmentPASSIVATE OVERALL
stud_assembly_styleSTUD ASSEMBLY
securing_device_typeWASHER
eyelet_outside_diameter0.247 INCHES NOMINAL IN
material_accommodated_thickness0.531 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN
distance_from_engaging_member_to_largest_bearing_surface_of_head0.915 INCHES NOMINAL IN
NSN5325-00-778-7724
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: FON20-7524-17 · 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
•
EYELET OUTSIDE DIAMETER: 0.247 INCHES NOMINAL IN
•
DRIVE TYPE: SLOTTED
•
MATERIAL ACCOMMODATED THICKNESS: 0.531 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN
•
DIAMETER: 0.250 INCHES NOMINAL IN
•
STUD HEAD HEIGHT: 0.073 INCHES NOMINAL IN
•
SECURING DEVICE TYPE: WASHER
•
DISTANCE FROM ENGAGING MEMBER TO LARGEST BEARING SURFACE OF HEAD: 0.915 INCHES NOMINAL IN
•
SURFACE TREATMENT: PASSIVATE OVERALL
TECHNICAL CHARACTERISTICS
EYELET OUTSIDE DIAMETER0.247 INCHES NOMINAL IN
DRIVE TYPESLOTTED
MATERIAL ACCOMMODATED THICKNESS0.531 INCHES MINIMUM AND 0.560 INCHES MAXIMUM IN
DIAMETER0.250 INCHES NOMINAL IN
STUD HEAD HEIGHT0.073 INCHES NOMINAL IN
SECURING DEVICE TYPEWASHER
DISTANCE FROM ENGAGING MEMBER TO LARGEST BEARING SURFACE OF HEAD0.915 INCHES NOMINAL IN
SURFACE TREATMENTPASSIVATE OVERALL
MATERIALSTEEL OVERALL
STUD ASSEMBLY STYLESTUD ASSEMBLY
OTHER ITEMS IN FSC 5325 — Fastening Devices
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5325-00-000-1884 5325-00-000-9988 5325-00-001-1567 5325-00-001-2043 5325-00-001-3842 5325-00-001-3858 5325-00-001-3871 5325-00-001-4317
SUBSTITUTES & CROSS-REFERENCES 2
C123Z9C11Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
2600-17SSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is FON20-7524-17?
FON20-7524-17 is a STUD ASSEMBLY,TURNLOCK FASTENER.
What parts can replace FON20-7524-17?
There are 2 known substitutes for FON20-7524-17: C123Z9C11, 2600-17S. Substitute compatibility should be verified for your specific system.
What is the NSN for FON20-7524-17?
FON20-7524-17 is cataloged in the U.S. Government catalog under NSN 5325-00-778-7724. 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.