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121J-P445-Z3C — STUD,TURNLOCK FASTENER

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

121J-P445-Z3C: STUD,TURNLOCK FASTENER.

The STUD,TURNLOCK FASTENER is a the manufacturer industrial component. Key specifications include diameter: 0.438 INCHES MINIMUM IN, material: STEEL OVERALL, drive_type: CROSS RECESS, grip_length: 0.440 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN, shank_neck_length: 0.215 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN, surface_treatment: ZINC AND CHROMATE OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 5325-01-416-8877, 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
121J-P445-Z3C
NSN: 5325-01-416-8877
FSC: 5325 — Fastening Devices
CAGE: 72794 — SOUTHCO INC (USA)
SPECIFICATIONS
diameter0.438 INCHES MINIMUM IN
materialSTEEL OVERALL
drive_typeCROSS RECESS
grip_length0.440 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN
shank_neck_length0.215 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
surface_treatmentZINC AND CHROMATE OVERALL
turnlock_stud_head_styleFILLISTER
stud_shank_major_diameter0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN
turnlock_stud_shank_styleSTUD SHANK
NSN5325-01-416-8877
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 121J-P445-Z3C · 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
•
DRIVE TYPE: CROSS RECESS
•
TURNLOCK STUD SHANK STYLE: STUD SHANK
•
DIAMETER: 0.438 INCHES MINIMUM IN
•
SHANK NECK LENGTH: 0.215 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
•
TURNLOCK STUD HEAD STYLE: FILLISTER
•
STUD SHANK MAJOR DIAMETER: 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN
•
SURFACE TREATMENT: ZINC AND CHROMATE OVERALL
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
DRIVE TYPECROSS RECESS
TURNLOCK STUD SHANK STYLESTUD SHANK
DIAMETER0.438 INCHES MINIMUM IN
SHANK NECK LENGTH0.215 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN
TURNLOCK STUD HEAD STYLEFILLISTER
STUD SHANK MAJOR DIAMETER0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN
SURFACE TREATMENTZINC AND CHROMATE OVERALL
MATERIALSTEEL OVERALL
GRIP LENGTH0.440 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN
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
3307816-5Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
APRJ4-45Reference document
Same NSN cross-reference
Reference document — Secondary 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 121J-P445-Z3C?
121J-P445-Z3C is a STUD,TURNLOCK FASTENER.
What parts can replace 121J-P445-Z3C?
There are 2 known substitutes for 121J-P445-Z3C: 3307816-5, APRJ4-45. Substitute compatibility should be verified for your specific system.
What is the NSN for 121J-P445-Z3C?
121J-P445-Z3C is cataloged in the U.S. Government catalog under NSN 5325-01-416-8877. 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.