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Technical Data Sheet
PartsTable / COMPONENT / FJ4-30
FJ4-30 ✓ 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 STUD,TURNLOCK FASTENER is a the manufacturer industrial component. Key specifications include diameter: 0.437 INCHES NOMINAL IN, material: STEEL OVERALL, drive_type: SLOTTED, grip_length: 0.300 INCHES NOMINAL IN, shank_neck_length: 0.150 INCHES NOMINAL IN, surface_treatment: CADMIUM OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-449-3060, 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
FJ4-30
NSN: 5325-00-449-3060
FSC: 5325
CAGE: 72794 — SOUTHCO INC (USA)
SPECIFICATIONS
diameter0.437 INCHES NOMINAL IN
materialSTEEL OVERALL
drive_typeSLOTTED
grip_length0.300 INCHES NOMINAL IN
shank_neck_length0.150 INCHES NOMINAL IN
surface_treatmentCADMIUM OVERALL
turnlock_stud_head_styleFLAT COUNTERSUNK
stud_shank_major_diameter0.225 INCHES NOMINAL IN
turnlock_stud_shank_styleSTUD SHANK
material_accommodated_thickness0.070 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
NSN5325-00-449-3060
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: FJ4-30 · 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
•
SHANK NECK LENGTH: 0.150 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
SURFACE TREATMENT: CADMIUM OVERALL
•
TURNLOCK STUD HEAD STYLE: FLAT COUNTERSUNK
•
MATERIAL ACCOMMODATED THICKNESS: 0.070 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
•
TURNLOCK STUD SHANK STYLE: STUD SHANK
•
DRIVE TYPE: SLOTTED
•
DIAMETER: 0.437 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SHANK NECK LENGTH0.150 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
SURFACE TREATMENTCADMIUM OVERALL
TURNLOCK STUD HEAD STYLEFLAT COUNTERSUNK
MATERIAL ACCOMMODATED THICKNESS0.070 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
TURNLOCK STUD SHANK STYLESTUD SHANK
DRIVE TYPESLOTTED
DIAMETER0.437 INCHES NOMINAL IN
STUD SHANK MAJOR DIAMETER0.225 INCHES NOMINAL IN
GRIP LENGTH0.300 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
2903638-1Interchangeable
interchangeable cross-reference
interchangeable
580-166Interchangeable
interchangeable cross-reference
interchangeable
55-003-0008Interchangeable
interchangeable cross-reference
interchangeable
F430Interchangeable
interchangeable cross-reference
interchangeable
8888788Interchangeable
interchangeable cross-reference
interchangeable
ID-32A-7/10Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FJ4-30?
FJ4-30 is a STUD,TURNLOCK FASTENER.
What parts can replace FJ4-30?
There are 8 known substitutes for FJ4-30: 2903638-1, 580-166, 55-003-0008 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for FJ4-30?
FJ4-30 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5325-00-449-3060. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026